- Flashbench-results - lists.linaro.org

by Arnd Bergmann

Disk /dev/mmcblk0: 3976 MB, 3976200192 bytes 4 heads, 16 sectors/track, 121344 cylinders, total 7766016 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x00000000 ==> /sys/block/mmcblk0/device/block <== head: error reading `/sys/block/mmcblk0/device/block': Is a directory ==> /sys/block/mmcblk0/device/cid <== 275048534430344730b00dd71400a900 ==> /sys/block/mmcblk0/device/csd <== 400e00325b5900001d9f7f800a400000 ==> /sys/block/mmcblk0/device/date <== 09/2010 ==> /sys/block/mmcblk0/device/driver <== head: error reading `/sys/block/mmcblk0/device/driver': Is a directory ==> /sys/block/mmcblk0/device/erase_size <== 512 ==> /sys/block/mmcblk0/device/fwrev <== 0x0 ==> /sys/block/mmcblk0/device/hwrev <== 0x3 ==> /sys/block/mmcblk0/device/manfid <== 0x000027 ==> /sys/block/mmcblk0/device/name <== SD04G ==> /sys/block/mmcblk0/device/oemid <== 0x5048 ==> /sys/block/mmcblk0/device/power <== head: error reading `/sys/block/mmcblk0/device/power': Is a directory ==> /sys/block/mmcblk0/device/preferred_erase_size <== 4194304 ==> /sys/block/mmcblk0/device/scr <== 0235800001000000 ==> /sys/block/mmcblk0/device/serial <== 0xb00dd714 ==> /sys/block/mmcblk0/device/subsystem <== head: error reading `/sys/block/mmcblk0/device/subsystem': Is a directory ==> /sys/block/mmcblk0/device/type <== SD ==> /sys/block/mmcblk0/device/uevent <== DRIVER=mmcblk MMC_TYPE=SD MMC_NAME=SD04G MODALIAS=mmc:block $ sudo ./flashbench -a /dev/mmcblk0 -b 1024 --count=30 align 402653184 pre 1.95ms on 2.87ms post 1.56ms diff 1.12ms align 268435456 pre 2.2ms on 3.04ms post 1.6ms diff 1.14ms align 201326592 pre 2.51ms on 2.99ms post 1.59ms diff 940µs align 134217728 pre 2.38ms on 2.94ms post 1.59ms diff 950µs align 100663296 pre 2.24ms on 3.01ms post 1.6ms diff 1.09ms align 67108864 pre 2.47ms on 2.87ms post 1.51ms diff 880µs align 50331648 pre 2.45ms on 2.97ms post 1.57ms diff 960µs align 33554432 pre 2.6ms on 2.96ms post 1.57ms diff 876µs align 25165824 pre 2.57ms on 2.94ms post 1.58ms diff 872µs align 16777216 pre 2.28ms on 2.99ms post 1.59ms diff 1.05ms align 12582912 pre 2.22ms on 2.92ms post 1.6ms diff 1.01ms align 8388608 pre 2.54ms on 2.93ms post 1.55ms diff 880µs align 6291456 pre 1.7ms on 1.86ms post 1.57ms diff 226µs align 4194304 pre 2.35ms on 2.82ms post 1.56ms diff 868µs align 3145728 pre 1.51ms on 1.67ms post 1.5ms diff 172µs align 2097152 pre 1.56ms on 1.72ms post 1.49ms diff 190µs align 1572864 pre 1.5ms on 1.67ms post 1.49ms diff 176µs align 1048576 pre 1.5ms on 1.67ms post 1.49ms diff 173µs align 786432 pre 1.5ms on 1.67ms post 1.49ms diff 173µs align 524288 pre 1.5ms on 1.67ms post 1.5ms diff 172µs align 393216 pre 1.5ms on 1.67ms post 1.49ms diff 169µs align 262144 pre 1.5ms on 1.67ms post 1.49ms diff 169µs align 196608 pre 1.5ms on 1.67ms post 1.5ms diff 174µs align 131072 pre 1.51ms on 1.67ms post 1.49ms diff 171µs align 98304 pre 1.51ms on 1.67ms post 1.49ms diff 176µs align 65536 pre 1.49ms on 1.67ms post 1.5ms diff 175µs align 49152 pre 1.5ms on 1.66ms post 1.49ms diff 169µs align 32768 pre 1.49ms on 1.66ms post 1.48ms diff 174µs align 24576 pre 1.5ms on 1.67ms post 1.49ms diff 173µs align 16384 pre 1.5ms on 1.67ms post 1.49ms diff 173µs align 12288 pre 1.49ms on 1.54ms post 1.49ms diff 45.8µs align 8192 pre 1.49ms on 1.67ms post 1.49ms diff 175µs align 6144 pre 1.49ms on 1.57ms post 1.52ms diff 65.2µs align 4096 pre 1.49ms on 1.53ms post 1.49ms diff 44.8µs align 3072 pre 1.49ms on 1.53ms post 1.49ms diff 42.1µs align 2048 pre 1.49ms on 1.53ms post 1.49ms diff 43.7µs == > 4 MB erase block, 8 KB page ? $ sudo ./flashbench --open-au --open-au-nr=1 /dev/mmcblk0 --blocksize=512 4MiB 6M/s 2MiB 3.71M/s 1MiB 3.72M/s 512KiB 3.73M/s 256KiB 3.77M/s 128KiB 5.7M/s 64KiB 11.7M/s 32KiB 8.8M/s 16KiB 6.57M/s 8KiB 4.01M/s 4KiB 1.33M/s 2KiB 563K/s 1KiB 10.2K/s 512B 8.54K/s arnd@klappe2:~/git/flashbench$ sudo ./flashbench --open-au /dev/mmcblk0 --blocksize=2048 --open-au-nr=2 4MiB 8.35M/s 2MiB 6.47M/s 1MiB 2.89M/s 512KiB 1.4M/s 256KiB 697K/s 128KiB 348K/s 64KiB 174K/s arnd@klappe2:~/git/flashbench$ sudo ./flashbench --open-au --open-au-nr=1 /dev/mmcblk0 --blocksize=2048 --random 4MiB 5.74M/s 2MiB 2.5M/s 1MiB 1.45M/s 512KiB 802K/s 256KiB 560K/s 128KiB 279K/s $ sudo ./flashbench --findfat --fat-nr=5 /dev/mmcblk0 --blocksize=2048 --random 4MiB 2.4M/s 2.78M/s 6.02M/s 11.7M/s 11.8M/s 2MiB 2.52M/s 2.77M/s 4.56M/s 3.76M/s 3.76M/s 1MiB 2.73M/s 2.51M/s 1.65M/s 1.59M/s 1.59M/s 512KiB 2.58M/s 2.77M/s 862K/s 855K/s 855K/s 256KiB 2.4M/s 2.73M/s 556K/s 528K/s 555K/s 128KiB 2.4M/s 2.74M/s 271K/s 271K/s 271K/s 64KiB 2.08M/s 2.5M/s 258K/s 258K/s 258K/s 32KiB 1.88M/s 2.31M/s 142K/s 142K/s 142K/s

14 years, 4 months

1
0
0 0

Fwd: Kingston 8GB Datatraveler DT101 G2

by Ajax Criterion

Oops--forgot to 'reply all' to the list! ---------- Forwarded message ---------- From: Ajax Criterion <ajax.criterion(a)gmail.com> Date: Thu, 28 Jul 2011 07:28:53 -0700 Subject: Re: [Flashbench] Kingston 8GB Datatraveler DT101 G2 To: Arnd Bergmann <arnd(a)arndb.de> On Thu, Jul 28, 2011 at 6:30 AM, Arnd Bergmann <arnd(a)arndb.de> wrote: > On Thursday 28 July 2011, Ajax Criterion wrote: > >> --> aligned to 4MB blocks. FAT 32 in the front, EXT4 in the back >> again (I'll likely destroy this again with the --findfat test, but >> what the hell... FS in the back will get changed around a lot while I >> benchmark multiple filesystems). > > The --open-au test also destroys the data, you just might be able > to run a little bit longer. There is generally no reason to even > create a partition table in order to run flashbench, just boot from > a different drive than the one you want to test. > >> bash-4.1# flashbench -O --open-au-nr=10 /dev/sdc >> --erasesize=$[4*1024*1024] --blocksize=4096 >> 4MiB 11.8M/s >> 2MiB 13.2M/s >> 1MiB 13.6M/s >> 512KiB 13.6M/s >> 256KiB 13.5M/s >> 128KiB 11.2M/s >> 64KiB 15.2M/s >> ^C >> ^C >> bash-4.1# flashbench -O --open-au-nr=13 /dev/sdc >> --erasesize=$[4*1024*1024] --blocksize=4096 >> 4MiB 6.54M/s >> 2MiB 5.55M/s >> 1MiB 5.95M/s >> 512KiB 3.15M/s >> 256KiB 2.51M/s >> 128KiB 894K/s >> 64KiB 467K/s >> ^C >> bash-4.1# flashbench -O --open-au-nr=12 /dev/sdc >> --erasesize=$[4*1024*1024] --blocksize=4096 >> 4MiB 6.07M/s >> 2MiB 5.83M/s >> 1MiB 5.9M/s >> 512KiB 5.95M/s >> 256KiB 5.45M/s >> 128KiB 4.91M/s >> 64KiB 4.82M/s >> 32KiB 4.44M/s >> 16KiB 2.86M/s >> 8KiB 772K/s >> ^C >> bash-4.1# >> >> ---> There seems to be a clear breakdown after 12 AU's ... > > Yes, that is pretty clear from your numbers. > >> why am I >> bouncing around between 5-6 and 11-13 M/s?? > > I'm not sure, but what I can imagine is happening is that > the drive can switch each erase block between linear optimized > more (13 MB/s) and random access mode (6 MB/s). When you do > something that has a random pattern, including going beyond > 12 erase blocks, it will go into the random mode, in order to > cope at all. After writing linearly a few times, the controller > decides to get back into linear optimized mode. This is > a very smart thing to do for the controller. > Very interesting -- I'm quite pleased with the results for this drive, I'm looking forward to benchmarking it some more, now that I know how to properly align and test it! >> bash-4.1# flashbench -O --open-au-nr=12 /dev/sdc >> --erasesize=$[4*1024*1024] --blocksize=4096 --random >> 4MiB 11.2M/s >> 2MiB 8.51M/s >> 1MiB 5.8M/s >> 512KiB 3.6M/s >> 256KiB 5M/s >> 128KiB 3.86M/s >> 64KiB 3.12M/s >> 32KiB 3.23M/s >> 16KiB 1.89M/s >> ^C >> bash-4.1# flashbench -O --open-au-nr=13 /dev/sdc >> --erasesize=$[4*1024*1024] --blocksize=4096 --random >> 4MiB 8.89M/s >> 2MiB 7.31M/s >> 1MiB 5.55M/s >> 512KiB 3.7M/s >> 256KiB 4.99M/s >> 128KiB 3.74M/s >> 64KiB 3.11M/s >> 32KiB 3.25M/s >> ^C >> bash-4.1# flashbench -O --open-au-nr=15 /dev/sdc >> --erasesize=$[4*1024*1024] --blocksize=4096 --random >> 4MiB 9.85M/s >> 2MiB 7.47M/s >> 1MiB 4.7M/s >> 512KiB 2.54M/s >> 256KiB 995K/s >> ^C >> bash-4.1# flashbench -O --open-au-nr=14 /dev/sdc >> --erasesize=$[4*1024*1024] --blocksize=4096 --random >> 4MiB 7.13M/s >> 2MiB 5.82M/s >> 1MiB 4.01M/s >> 512KiB 3.67M/s >> 256KiB 4.94M/s >> 128KiB 3.23M/s >> 64KiB 3.43M/s >> 32KiB 3.37M/s >> 16KiB 1.79M/s >> ^C >> >> --looks to be 14 open AU's for random. > > Yes. > >> bash-4.1# mkdir /mnt/sdc1 >> bash-4.1# mount /dev/sdc1 /mnt/sdc1 >> bash-4.1# umount /dev/sdc1 >> >> ---> mounts fine. > > Just lucky that you didn't overwrite any actual data. flashbench does > not write into the first 16 MB on the --open-au test in order to avoid > the FAT optimized blocks, so if all your important data is there, you > won't notice the damage. > OK, understood. Thanks for clarifying! I thought maybe my drive would copy the underlying data out of the way to another location, but I guess that's not the case :) >> bash-4.1# flashbench --findfat --fat-nr=8 --erasesize=$[4*1024*1024] >> --random --blocksize=512 /dev/sdc >> 4MiB 4.96M/s 13.4M/s 13.3M/s 13.4M/s 13.3M/s 13.4M/s 13.3M/s 13.3M/s >> 2MiB 5.16M/s 9.27M/s 9.28M/s 9.22M/s 9.19M/s 9.39M/s 9.16M/s 9.43M/s >> 1MiB 5.24M/s 5.86M/s 5.86M/s 5.84M/s 5.85M/s 5.9M/s 5.87M/s 5.92M/s >> 512KiB 5.29M/s 3.77M/s 3.77M/s 3.77M/s 3.77M/s 3.77M/s 3.77M/s 3.77M/s >> 256KiB 2.92M/s 5.5M/s 5.49M/s 5.51M/s 5.48M/s 5.49M/s 5.5M/s 5.46M/s >> 128KiB 4.54M/s 4.61M/s 4.61M/s 4.61M/s 4.6M/s 4.62M/s 4.6M/s 4.61M/s >> 64KiB 4.16M/s 3.58M/s 3.6M/s 3.6M/s 3.6M/s 3.59M/s 3.59M/s 3.6M/s >> 32KiB 5.61M/s 4.17M/s 4.17M/s 4.18M/s 4.19M/s 4.19M/s 4.18M/s 4.18M/s >> 16KiB 4.1M/s 2.83M/s 2.83M/s 2.83M/s 2.82M/s 2.82M/s 2.83M/s 2.82M/s >> 8KiB 1.35M/s 1.33M/s 1.33M/s 1.33M/s 1.33M/s 1.33M/s 1.33M/s 1.33M/s >> 4KiB 743K/s 839K/s 837K/s 838K/s 838K/s 838K/s 838K/s 838K/s >> ^C > > I think there is nothing to see here. > >> For some reason, when I run a scatter plot, I get a very long straight >> line...I'm trying to sort that out to get a better read, to verify the >> 4MB eraseblock... > > It's quite possible that that's all you can get out of this drive. > > Arnd > I did run one more series of tests, just to make absolutely sure the eraseblock size is correct. Now that I understand this test, and how it works, I really like it: bash-4.1# for i in 1 2 3 4 6 8 ; do > echo Size $[$i * 1024 * 1024] > flashbench --erasesize=$[$i * 1024 * 1024] --blocksize=$[$i * 1024 * 1024] --open-au --open-au-nr=10 /dev/sdc > echo Size $[$i * 1024 * 1024], offset $[$i/2 * 1024 * 1024] > flashbench --erasesize=$[$i * 1024 * 1024] --blocksize=$[$i * 1024 * 1024] --open-au --open-au-nr=10 --offset=$[$i/2 * 1024 * 1024] /dev/sdc > done Size 1048576 1MiB 10.2M/s Size 1048576, offset 0 1MiB need .param= argument from SEQUENCE from LEN_POW2 Size 2097152 2MiB 8.09M/s Size 2097152, offset 1048576 2MiB 3.9M/s Size 3145728 3MiB 5.94M/s Size 3145728, offset 1048576 3MiB 8.9M/s Size 4194304 4MiB 8.37M/s Size 4194304, offset 2097152 4MiB 7.28M/s Size 6291456 6MiB 7.4M/s Size 6291456, offset 3145728 6MiB 6.25M/s Size 8388608 8MiB 10.4M/s Size 8388608, offset 4194304 8MiB 9.19M/s bash-4.1# for i in 1 2 3 4 6 8 ; do echo Size $[$i * 1024 * 1024]; flashbench --erasesize=$[$i * 1024 * 1024] --blocksize=$[$i * 1024 * 1024] --open-au --open-au-nr=10 /dev/sdc; echo Size $[$i * 1024 * 1024], offset $[$i/2 * 1024 * 1024]; flashbench --erasesize=$[$i * 1024 * 1024] --blocksize=$[$i * 1024 * 1024] --open-au --open-au-nr=10 --offset=$[$i/2 * 1024 * 1024] /dev/sdc; done Size 1048576 1MiB 7.52M/s Size 1048576, offset 0 1MiB need .param= argument from SEQUENCE from LEN_POW2 Size 2097152 2MiB 7.47M/s Size 2097152, offset 1048576 2MiB 3.9M/s Size 3145728 3MiB 5.24M/s Size 3145728, offset 1048576 3MiB 7.34M/s Size 4194304 4MiB 10.1M/s Size 4194304, offset 2097152 4MiB 6.78M/s Size 6291456 6MiB 7.39M/s Size 6291456, offset 3145728 6MiB 5.86M/s Size 8388608 8MiB 10.8M/s Size 8388608, offset 4194304 8MiB 9.73M/s bash-4.1# for i in 1 2 3 4 6 8 ; do echo Size $[$i * 1024 * 1024]; flashbench --erasesize=$[$i * 1024 * 1024] --blocksize=$[$i * 1024 * 1024] --open-au --open-au-nr=10 /dev/sdc; echo Size $[$i * 1024 * 1024], offset $[$i/2 * 1024 * 1024]; flashbench --erasesize=$[$i * 1024 * 1024] --blocksize=$[$i * 1024 * 1024] --open-au --open-au-nr=10 --offset=$[$i/2 * 1024 * 1024] /dev/sdc; done Size 1048576 1MiB 11M/s Size 1048576, offset 0 1MiB need .param= argument from SEQUENCE from LEN_POW2 Size 2097152 2MiB 7.01M/s Size 2097152, offset 1048576 2MiB 4.04M/s Size 3145728 3MiB 4.97M/s Size 3145728, offset 1048576 3MiB 7.85M/s Size 4194304 4MiB 9.02M/s Size 4194304, offset 2097152 4MiB 7.24M/s Size 6291456 6MiB 8.25M/s Size 6291456, offset 3145728 6MiB 5.96M/s Size 8388608 8MiB 9.35M/s Size 8388608, offset 4194304 8MiB 9.7M/s bash-4.1# for i in 1 2 3 4 6 8 9 10 11 12 13 ; do echo Size $[$i * 1024 * 1024]; flashbench --erasesize=$[$i * 1024 * 1024] --blocksize=$[$i * 1024 * 1024] --open-au --open-au-nr=10 /dev/sdc; echo Size $[$i * 1024 * 1024], offset $[$i * * 1024]; flashbench --erasesize=$[$i * 1024 * 1024] --blocksize=$[$i * 1024 * 1024] --open-au --open-au-nr=10 --offset=$[$i/2 * 1024 * 1024] /dev/sdc; done Size 1048576 1MiB 11M/s Size 1048576, offset 0 1MiB need .param= argument from SEQUENCE from LEN_POW2 Size 2097152 2MiB 7.37M/s Size 2097152, offset 1048576 2MiB 4.21M/s Size 3145728 3MiB 4.62M/s Size 3145728, offset 1048576 3MiB 7.98M/s Size 4194304 4MiB 10.2M/s Size 4194304, offset 2097152 4MiB 6.99M/s Size 6291456 6MiB 7.53M/s Size 6291456, offset 3145728 6MiB 6.23M/s Size 8388608 8MiB 9.71M/s Size 8388608, offset 4194304 8MiB 8.82M/s Size 9437184 9MiB 7.44M/s Size 9437184, offset 4194304 9MiB 9.41M/s Size 10485760 10MiB 10.1M/s Size 10485760, offset 5242880 10MiB 10.5M/s Size 11534336 11MiB 9.3M/s Size 11534336, offset 5242880 11MiB 10.9M/s Size 12582912 12MiB 11.5M/s Size 12582912, offset 6291456 12MiB 10.4M/s Size 13631488 13MiB 9.29M/s Size 13631488, offset 6291456 13MiB 10.5M/s bash-4.1# bash-4.1# for i in 1 2 3 4 6 8 9 10 11 12 13 ; do echo Size $[$i * 1024 * 1024]; flashbench --erasesize=$[$i * 1024 * 1024] --blocksize=$[$i * 1024 * 1024] --open-au --open-au-nr=10 /dev/sdc; echo Size $[$i * 1024 * 1024], offset $[$i * 512 * 1024]; flashbench --erasesize=$[$i * 1024 * 1024] --blocksize=$[$i * 1024 * 1024] --open-au --open-au-nr=10 --offset=$[$i * 512 * 1024] /dev/sdc; done Size 1048576 1MiB 3.52M/s Size 1048576, offset 524288 1MiB 9.19M/s Size 2097152 2MiB 4.37M/s Size 2097152, offset 1048576 2MiB 4.62M/s Size 3145728 3MiB 5.15M/s Size 3145728, offset 1572864 3MiB 4.29M/s Size 4194304 4MiB 10.7M/s Size 4194304, offset 2097152 4MiB 6.63M/s Size 6291456 6MiB 9.01M/s Size 6291456, offset 3145728 6MiB 6.9M/s Size 8388608 8MiB 9.62M/s Size 8388608, offset 4194304 8MiB 9.23M/s Size 9437184 9MiB 7.64M/s Size 9437184, offset 4718592 9MiB 9.03M/s Size 10485760 10MiB 10.2M/s Size 10485760, offset 5242880 10MiB 10.5M/s Size 11534336 11MiB 9.53M/s Size 11534336, offset 5767168 11MiB 9.57M/s Size 12582912 12MiB 11.7M/s Size 12582912, offset 6291456 12MiB 8.81M/s Size 13631488 13MiB 9.82M/s Size 13631488, offset 6815744 13MiB 10.3M/s bash-4.1# for i in 1 2 3 4 6 8 9 10 11 12 13 ; do echo Size $[$i * 1024 * 1024]; flashbench --erasesize=$[$i * 1024 * 1024] --blocksize=$[$i * 1024 * 1024] --open-au --open-au-nr=10 /dev/sdc1; echo Size $[$i * 1024 * 1024], offset $[$i * 512 * 1024]; flashbench --erasesize=$[$i * 1024 * 1024] --blocksize=$[$i * 1024 * 1024] --open-au --open-au-nr=10 --offset=$[$i * 512 * 1024] /dev/sdc1; done Size 1048576 1MiB 7.47M/s Size 1048576, offset 524288 1MiB 7.86M/s Size 2097152 2MiB 3.79M/s Size 2097152, offset 1048576 2MiB 4.24M/s Size 3145728 3MiB 6.31M/s Size 3145728, offset 1572864 3MiB 4.05M/s Size 4194304 4MiB 8.7M/s Size 4194304, offset 2097152 4MiB 7.29M/s Size 6291456 6MiB 7.34M/s Size 6291456, offset 3145728 6MiB 5.7M/s Size 8388608 8MiB 9.17M/s Size 8388608, offset 4194304 8MiB 9.68M/s Size 9437184 9MiB 8.09M/s Size 9437184, offset 4718592 9MiB 9.03M/s Size 10485760 10MiB 9.31M/s Size 10485760, offset 5242880 10MiB 10.5M/s Size 11534336 11MiB 9.42M/s Size 11534336, offset 5767168 11MiB 9.36M/s Size 12582912 12MiB 12.3M/s Size 12582912, offset 6291456 12MiB 8.89M/s Size 13631488 13MiB 9.63M/s Size 13631488, offset 6815744 13MiB 10.1M/s bash-4.1# After a few runs, I modified the offset to be $i*512*1024 instead of $i/2*1024*1024, since bash can't handle fractions. I think the results are clear though -- Anything less than 4MB (other than short 1MB writes) is slower; 4MB offset by 2MB is slower than 4MB, and 8MB with a 4MB offset is the same speed as 8MB. Longer writes get faster, but 12MB, another multiple of 4, is the fastest. No doubt that I'm at 4MB What's my page size here -- 16KB or 32? i'm thinking 16, because there are times when 16KB was running at greater than half the speed of 32KB, but I'm not positive on this... I'm going to transfer my OS to the Kingston drive and get some better results for the Lexar drive later today. Thanks again for your time and help! -- Sent from my mobile device

14 years, 4 months

2
2
0 0

Lexar JumpDrive TwistTurn 4GB USB flashdrive

by Ajax Criterion

Hello! I'm relatively new to linux (been working with it for 7 or 8 months now), primarily using and contributing to the Porteus Linux community. Porteus is a distro that is optimized to run from a cd, USB flash drive, CF, SD, or other portable bootable media. As such, I'm trying to improve my knowledge of how flash devices work and how to best optimize them for use under linux (and, thus, it seems we may have some common goals). Arnd, your article at LWN as well as the information you've posted at linaro and to this mailing list has been a great help to me -- thank you for your time and efforts! I have three flash drives ( an 8GB Kingston DataTraveller DT101 G2, which doesn't seem to match up with the results you've already posted on the flash card survey for an 8GB DataTraveller, a 4GB Lexar JumpDrive TwistTurn, and an old 1GB USB1.1 unnamed drive that I received as a gift). I benched the Kingston and Lexar models yesterday, but somehow flashbench or one of the other commands I ran during the process wiped out the MBR and partition tables on both drives, and I've lost almost all of my data. The only thing I've been able to salvage so far is the results for the Lexar drive. I'll send along results for the others, and if I can figure out what I did to hose my drives I'll report on that as well (if you have any good recommendations for recovering data, I'm all ears! I've tried testdisk, dd_rescue, and scalpel without much luck --this could just be my lack of skill lol. Scalpel was able to get some text scattered around, which is how I got the Lexar results back). Ok, on to the results: ## Note -- this drive is 2-3 years old, give or take. bash-4.1# Bus 002 Device 004: ID 05dc:a764 Lexar Media, Inc. bash-4.1# fdisk -lu /dev/sdc Disk /dev/sdc: 4009 MB, 4009754624 bytes 128 heads, 16 sectors/track, 3824 cylinders, total 7831552 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x77ac9c58 Device Boot Start End Blocks Id System /dev/sdc1 * 49152 3637247 1794048 83 Linux /dev/sdc2 3637248 7831551 2097152 83 Linux bash-4.1# ## In an effort to improve performance without really knowing the erasesize of this drive, I started my partitions on 24MB intervals (least common denominator for all of the common allocation unit sizes on the flash card survey) and set my cylinder size to be one MB (I don't know if cylinder size, sectors/track, etc., really matters, since the FS block sizes don't match up to the page sizes anyway, but I thought it was worth a try). However, this didn't really help my performance very much. I should note that partition sdc1 was actually formatted as FAT32, and sdc2 was formatted as EXT4. bash-4.1# hdparm -I /dev/sdc /dev/sdc: SG_IO: bad/missing sense data, sb[]: 70 00 05 00 00 00 00 0a 00 00 00 00 20 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ATA device, with non-removable media Standards: Likely used: 1 Configuration: Logical max current cylinders 0 0 heads 0 0 sectors/track 0 0 -- Logical/Physical Sector size: 512 bytes device size with M = 1024*1024: 0 MBytes device size with M = 1000*1000: 0 MBytes cache/buffer size = unknown Capabilities: IORDY not likely Cannot perform double-word IO R/W multiple sector transfer: not supported DMA: not supported PIO: pio0 bash-4.1# cat /proc/partitions 8 32 3915776 sdc 8 33 1794048 sdc1 8 34 2097152 sdc2 bash-4.1# ./flashbench -a /dev/sdc --blocksize=1024 --count=100 align 1073741824 pre 846Âµs on 867Âµs post 849Âµs diff 19.8Âµs align 536870912 pre 817Âµs on 866Âµs post 815Âµs diff 49.2Âµs align 268435456 pre 809Âµs on 855Âµs post 811Âµs diff 45.3Âµs align 134217728 pre 819Âµs on 856Âµs post 794Âµs diff 49.6Âµs align 67108864 pre 814Âµs on 857Âµs post 808Âµs diff 45.6Âµs align 33554432 pre 809Âµs on 857Âµs post 806Âµs diff 49.5Âµs align 16777216 pre 818Âµs on 862Âµs post 813Âµs diff 46.2Âµs align 8388608 pre 808Âµs on 861Âµs post 805Âµs diff 54.7Âµs align 4194304 pre 798Âµs on 857Âµs post 804Âµs diff 56.3Âµs align 2097152 pre 833Âµs on 862Âµs post 814Âµs diff 38.1Âµs align 1048576 pre 829Âµs on 881Âµs post 818Âµs diff 57Âµs align 524288 pre 829Âµs on 884Âµs post 826Âµs diff 56.2Âµs align 262144 pre 849Âµs on 886Âµs post 807Âµs diff 58.1Âµs align 131072 pre 849Âµs on 876Âµs post 832Âµs diff 35.8Âµs align 65536 pre 837Âµs on 884Âµs post 824Âµs diff 53.7Âµs align 32768 pre 824Âµs on 883Âµs post 831Âµs diff 55Âµs align 16384 pre 833Âµs on 881Âµs post 833Âµs diff 48.7Âµs align 8192 pre 832Âµs on 875Âµs post 820Âµs diff 48.6Âµs align 4096 pre 827Âµs on 880Âµs post 831Âµs diff 51.4Âµs align 2048 pre 833Âµs on 821Âµs post 831Âµs diff -11049n bash-4.1# ##I wasn't sure, but I assumed that this means I have a 4MB erase block -- my numbers were even more inconsistent before I added the count=100 option. I also made a number of scatter plots for this drive, with and without offsets to different locations on the drive, and it showed a straight line for 24+MB (whereas my kingston drive showed very clear jumps at 4MB intervals). bash-4.1# ./flashbench --open-au --open-au-nr=1 /dev/sdc --erasesize=$[4 * 1024 * 1024] --blocksize=1024 4MiB 6.62M/s 2MiB 7.08M/s 1MiB 7.05M/s 512KiB 7.05M/s 256KiB 7.09M/s 128KiB 7.1M/s 64KiB 7.1M/s 32KiB 7.03M/s 16KiB 6.92M/s 8KiB 6.64M/s 4KiB 2.79M/s 2KiB 1.29M/s 1KiB 620K/s bash-4.1# ./flashbench --open-au --open-au-nr=2 /dev/sdc --erasesize=$[4 * 1024 * 1024] --blocksize=1024 4MiB 7.42M/s 2MiB 7.4M/s 1MiB 7.34M/s 512KiB 6.19M/s 256KiB 7.36M/s 128KiB 7.34M/s 64KiB 7.35M/s 32KiB 7.28M/s 16KiB 7.13M/s 8KiB 6.83M/s 4KiB 2.8M/s 2KiB 1.28M/s ^C bash-4.1# ./flashbench --open-au --open-au-nr=3 /dev/sdc --erasesize=$[4 * 1024 * 1024] --blocksize=1024 4MiB 6.48M/s 2MiB 5.46M/s 1MiB 7.4M/s 512KiB 7.39M/s 256KiB 7.34M/s 128KiB 7.35M/s 64KiB 7.34M/s 32KiB 7.26M/s 16KiB 7.11M/s 8KiB 6.83M/s 4KiB 2.81M/s ^C bash-4.1# ./flashbench --open-au --open-au-nr=4 /dev/sdc --erasesize=$[4 * 1024 * 1024] --blocksize=1024 4MiB 6.8M/s 2MiB 5.8M/s 1MiB 7.32M/s 512KiB 5.83M/s 256KiB 7.36M/s 128KiB 7.33M/s 64KiB 7.34M/s 32KiB 7.26M/s 16KiB 7.12M/s 8KiB 6.8M/s 4KiB 2.8M/s ^C bash-4.1# ./flashbench --open-au --open-au-nr=5 /dev/sdc --erasesize=$[4 * 1024 * 1024] --blocksize=1024 4MiB 6.95M/s 2MiB 6.06M/s 1MiB 7.34M/s 512KiB 4.22M/s 256KiB 1.45M/s 128KiB 675K/s ^C --> 4 open linear AU's? bash-4.1# ./flashbench --open-au --open-au-nr=4 /dev/sdc --erasesize=$[4 * 1024 * 1024] --blocksize=1024 --random 4MiB 6.86M/s 2MiB 5.81M/s 1MiB 7.33M/s 512KiB 3.39M/s 256KiB 1.39M/s ^C bash-4.1# ./flashbench --open-au --open-au-nr=1 /dev/sdc --erasesize=$[4 * 1024 * 1024] --blocksize=1024 --random 4MiB 5.44M/s 2MiB 4.88M/s 1MiB 7.34M/s 512KiB 4.45M/s 256KiB 4.95M/s 128KiB 2.7M/s 64KiB 4.98M/s 32KiB 2.88M/s 16KiB 2.85M/s 8KiB 1.65M/s 4KiB 960K/s ^C bash-4.1# ./flashbench --open-au --open-au-nr=2 /dev/sdc --erasesize=$[4 * 1024 * 1024] --blocksize=1024 --random 4MiB 4.79M/s 2MiB 5.99M/s 1MiB 5.44M/s 512KiB 4.41M/s 256KiB 1.53M/s 128KiB 941K/s 64KiB 540K/s ^C bash-4.1# --> only 1 open random AU? Or, I got the erasesize wrong, and there are two: bash-4.1# ./flashbench --open-au --open-au-nr=1 /dev/sdc --erasesize=$[2 * 1024 * 1024] --blocksize=1024 --random 2MiB 7.09M/s 1MiB 2.68M/s 512KiB 7.26M/s 256KiB 3.57M/s 128KiB 4.12M/s 64KiB 3.63M/s 32KiB 2.47M/s 16KiB 2.53M/s 8KiB 2.2M/s 4KiB 960K/s 2KiB 436K/s ^C^[[A bash-4.1# ./flashbench --open-au --open-au-nr=2 /dev/sdc --erasesize=$[2 * 1024 * 1024] --blocksize=1024 --random 2MiB 5.1M/s 1MiB 7.42M/s 512KiB 4.85M/s 256KiB 4.37M/s 128KiB 2.86M/s 64KiB 6.73M/s 32KiB 2.81M/s 16KiB 2.21M/s 8KiB 1.98M/s 4KiB 866K/s ^C bash-4.1# ./flashbench --open-au --open-au-nr=3 /dev/sdc --erasesize=$[2 * 1024 * 1024] --blocksize=1024 --random 2MiB 4.32M/s 1MiB 5.91M/s 512KiB 4.11M/s 256KiB 1.39M/s 128KiB 998K/s 64KiB 619K/s ^C bash-4.1# bash-4.1# ./flashbench --findfat --fat-nr=5 --erasesize=$[4 * 1024*1024] --random --blocksize=512 /dev/sdc 4MiB 3.8M/s 3.59M/s 7.41M/s 7.39M/s 7.37M/s 2MiB 3.54M/s 4.34M/s 5.48M/s 7.37M/s 7.4M/s 1MiB 3.54M/s 4.33M/s 5.5M/s 7.39M/s 7.41M/s 512KiB 4.24M/s 3.33M/s 3.36M/s 4.01M/s 4.44M/s 256KiB 4.24M/s 3.06M/s 2.7M/s 2.71M/s 2.71M/s 128KiB 3.78M/s 2.83M/s 2.72M/s 2.72M/s 2.72M/s 64KiB 2.96M/s 2.72M/s 2.4M/s 2.4M/s 2.4M/s 32KiB 3.23M/s 2.81M/s 2.67M/s 2.67M/s 2.67M/s 16KiB 2.57M/s 2.47M/s 2.47M/s 2.47M/s 2.46M/s 8KiB 1.67M/s 1.87M/s 1.87M/s 1.87M/s 1.87M/s 4KiB 1.03M/s 951K/s 882K/s 814K/s 816K/s 2KiB 464K/s 466K/s 436K/s 411K/s 411K/s ^C bash-4.1# ./flashbench --findfat --fat-nr=5 --erasesize=$[2 * 1024*1024] --random --blocksize=512 /dev/sdc 2MiB 4.25M/s 7.07M/s 3.07M/s 4.34M/s 7.39M/s 1MiB 7.11M/s 3.05M/s 3.05M/s 4.41M/s 7.38M/s 512KiB 4.27M/s 3.08M/s 3.03M/s 2.72M/s 3.64M/s 256KiB 4.17M/s 3.54M/s 3.54M/s 2.4M/s 2.39M/s 128KiB 2.95M/s 2.99M/s 2.97M/s 2.73M/s 2.74M/s 64KiB 4.12M/s 2.98M/s 2.98M/s 2.29M/s 2.3M/s 32KiB 2.8M/s 2.21M/s 2.21M/s 2.53M/s 2.54M/s 16KiB 2.6M/s 2.06M/s 2.6M/s 2.58M/s 2.58M/s 8KiB 1.54M/s 1.81M/s 1.82M/s 1.81M/s 1.19M/s 4KiB 1.03M/s 940K/s 791K/s 969K/s 829K/s ^C bash-4.1# ./flashbench --findfat --fat-nr=5 --erasesize=$[1 * 1024*1024] --random --blocksize=512 /dev/sdc 1MiB 2.97M/s 3.05M/s 3.1M/s 3.08M/s 3.12M/s 512KiB 3.02M/s 7.04M/s 3.02M/s 3.02M/s 3.03M/s 256KiB 6.95M/s 3.02M/s 6.99M/s 6.93M/s 6.93M/s 128KiB 1.87M/s 2.97M/s 2.98M/s 1.87M/s 1.86M/s 64KiB 6.75M/s 6.79M/s 6.81M/s 2.89M/s 6.84M/s 32KiB 1.33M/s 2.81M/s 2.85M/s 2.83M/s 2.84M/s 16KiB 1.73M/s 2.61M/s 2.63M/s 1.72M/s 2.61M/s 8KiB 1.18M/s 2.23M/s 1.55M/s 2.23M/s 2.22M/s 4KiB 1.04M/s 1.04M/s 866K/s 1.04M/s 1.05M/s 2KiB 504K/s 459K/s 458K/s 504K/s 420K/s ^C bash-4.1# --> all very unclear to me. ##with the following, I'm trying some offsets to confirm the eraseblock size. I wasn't able to sort anything very useable out of this. bash-4.1# ./flashbench --open-au --open-au-nr=1 /dev/sdc --erasesize=$[4 * 1024 * 1024] --blocksize=1024 --random --offset=$[123*512] 4MiB 3.99M/s 2MiB 3.38M/s 1MiB 4.02M/s 512KiB 3.97M/s 256KiB 3.29M/s 128KiB 3.74M/s 64KiB 2.74M/s 32KiB 2.46M/s 16KiB 1.69M/s 8KiB 1.43M/s 4KiB 756K/s ^C bash-4.1# ./flashbench --open-au --open-au-nr=1 /dev/sdc --erasesize=$[4 * 1024 * 1024] --blocksize=1024 --random --offset=$[28*1024*1024] 4MiB 5.48M/s 2MiB 7.44M/s 1MiB 7.42M/s 512KiB 3.67M/s 256KiB 4.82M/s 128KiB 2.71M/s 64KiB 5M/s 32KiB 2.89M/s 16KiB 2.86M/s 8KiB 1.66M/s 4KiB 964K/s ^C bash-4.1# ./flashbench --open-au --open-au-nr=1 /dev/sdc --erasesize=$[4 * 1024 * 1024] --blocksize=1024 --random --offset=$[29*1024*1024] 4MiB 3.76M/s 2MiB 5.46M/s 1MiB 7.36M/s 512KiB 4.86M/s 256KiB 4.82M/s 128KiB 2.71M/s 64KiB 5M/s 32KiB 2.89M/s 16KiB 2.51M/s 8KiB 1.66M/s 4KiB 963K/s ^C bash-4.1# ./flashbench --open-au --open-au-nr=1 /dev/sdc --erasesize=$[4 * 1024 * 1024] --blocksize=1024 --random --offset=$[30*1024*1024] 4MiB 3.49M/s 2MiB 7.27M/s 1MiB 4.08M/s 512KiB 5.55M/s 256KiB 3.84M/s 128KiB 3.11M/s 64KiB 4.03M/s 32KiB 3.35M/s 16KiB 2.87M/s 8KiB 1.63M/s 4KiB 968K/s ^C bash-4.1# ./flashbench --open-au --open-au-nr=1 /dev/sdc --erasesize=$[4 * 1024 * 1024] --blocksize=1024 --random --offset=$[57*512*1024] 4MiB 4.02M/s 2MiB 4.6M/s 1MiB 6.33M/s 512KiB 3.18M/s 256KiB 3.48M/s 128KiB 2.23M/s 64KiB 1.33M/s 32KiB 906K/s ^C bash-4.1# ./flashbench --open-au --open-au-nr=1 /dev/sdc --erasesize=$[1 * 1024 * 1024] --blocksize=1024 --random --offset=$[57*512*1024] 1MiB 3.15M/s 512KiB 7.21M/s 256KiB 6.9M/s 128KiB 1.91M/s 64KiB 6.63M/s 32KiB 6.13M/s 16KiB 1.59M/s 8KiB 3.8M/s 4KiB 950K/s 2KiB 419K/s 1KiB 216K/s bash-4.1# ./flashbench --open-au --open-au-nr=1 /dev/sdc --erasesize=$[1 * 1024 * 1024] --blocksize=1024 --random --offset=$[61*512*1024] 1MiB 5.3M/s 512KiB 4.38M/s 256KiB 3.04M/s 128KiB 6.81M/s 64KiB 6.64M/s 32KiB 1.6M/s 16KiB 5.12M/s 8KiB 1.38M/s 4KiB 985K/s 2KiB 466K/s 1KiB 221K/s bash-4.1# ./flashbench --open-au --open-au-nr=1 /dev/sdc --erasesize=$[1 * 1024 * 1024] --blocksize=1024 --random --offset=$[123*256*1024] 1MiB 3.04M/s 512KiB 6.96M/s 256KiB 7.07M/s 128KiB 2.98M/s 64KiB 6.71M/s 32KiB 2.21M/s 16KiB 1.74M/s 8KiB 3.83M/s 4KiB 888K/s 2KiB 389K/s 1KiB 218K/s bash-4.1# If you have more tests you would like performed, I can do them, once I am either done recovering data or give up on it. I'm very perplexed by this drive, because it was very clear to see the 4MB units in the kingston drive, both with the flashbench -a test and on the scatter plot. I spent the last couple of weeks benchmarking this drive with a script that I wrote, to try out various filesystems that work best with the Porteus operating system. I ran a substantial amount of tests with it improperly aligned, and got only a slight improvement when I aligned it to start partitions on 24MB blocks, so I guess it's not surprising that the eraseblock boundaries are difficult to find! I am curious to know what kind of improvements you see (or expect to see) when a drive is in versus out of alignment (and I'll be benchmarking my kingston drive to test this out as well). This information will likely be of great interest to our community. If I can sort out and resolve the cause for my drives getting wasted, I'll also recommend the flashbench tool to other users, and collect their results for your flashcard survey. Thanks again! -Ahau

14 years, 4 months

2
3
0 0

Kingston 8GB Datatraveler DT101 G2

by Ajax Criterion

Hi again, I was able to recover *most* of the test results for my Kingston drive. I've stitched this together from several chunks that were recovered, so bits and pieces are missing throughout, but most of the info is here. Unfortunately, I wasn't able to retrieve the full ouput of the 'flashbench -a' test -- I suppose you can take my word that it has a 4MB erase size until I can run some more tests on this drive :) KINGSTON 8GB Datatraveler DT101 G2 bash-4.1# fdisk -lu /dev/sdb Disk /dev/sdb: 7998 MB, 7998537728 bytes 255 heads, 63 sectors/track, 972 cylinders, total 15622144 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0xc3072e18 Device Boot Start End Blocks Id System /dev/sdb1 63 3148739 1574338+ b W95 FAT32 /dev/sdb2 * 3148740 15615179 6233220 83 Linux bash-4.1# ## FAT32 in the front, EXT2 in the back lsusb: Bus 002 Device 002: ID 0930:6545 Toshiba Corp. Kingston DataTraveler 102 Flash Drive / HEMA Flash Drive 2 GB / PNY Attache 4GB Stick bash-4.1# ./flashbench -a /dev/sdb --blocksize=1024 --count=32 align 2147483648 pre 617 <missing information> bash-4.1# ./flashbench -O --open-au-nr=1 /dev/sdb 4MiB 4.94M/s 2MiB 4.99M/s 1MiB 5.05M/s 512KiB 5.15M/s 256KiB 5.07M/s 128KiB 4.62M/s 64KiB 5.15M/s 32KiB 5.63M/s 16KiB 4.36M/s bash-4.1# ./flashbench -O --open-au-nr=2 /dev/sdb 4MiB 13.7M/s 2MiB 13.2M/s 1MiB 13.5M/s 512KiB 14M/s 256KiB 13.5M/s 128KiB 11.2M/s 64KiB 15.1M/s 32KiB 10.8M/s 16KiB 6.58M/s bash-4.1# ./flashbench -O --open-au-nr=3 /dev/sdb 4MiB 13.3M/s 2MiB 13.2M/s 1MiB 13.4M/s 512KiB 13.9M/s 256KiB 13.5M/s 128KiB 11.2M/s 64KiB 15.1M/s 32KiB 10.9M/s 16KiB 6.6M/s bash-4.1# ./flashbench -O --open-au-nr=4 /dev/sdb 4MiB 13.3M/s 2MiB 13.1M/s 1MiB 13.7M/s 512KiB 13.8M/s 256KiB 10.9M/s 128KiB 11.3M/s 64KiB 15.4M/s 32KiB 11.1M/s 16KiB 6.91M/s bash-4.1# ./flashbench -O --open-au-nr=5 /dev/sdb 4MiB 13.3M/s 2MiB 13M/s 1MiB 13.4M/s 512KiB 13.6M/s 256KiB 13.3M/s 128KiB 11.1M/s 64KiB 15M/s 32KiB 11M/s 16KiB 6.68M/s bash-4.1# ./flashbench -O --open-au-nr=6 /dev/sdb 4MiB 13.7M/s 2MiB 13.3M/s 1MiB 13.4M/s 512KiB 13.7M/s 256KiB 13.4M/s 128KiB 11.3M/s 64KiB 15.3M/s 32KiB 10.8M/s 16KiB 6.77M/s bash-4.1# ./flashbench -O --open-au-nr=8 /dev/sdb 4MiB 13.4M/s 2MiB 13.2M/s 1MiB 13.4M/s 512KiB 12.1M/s 256KiB 13.5M/s 128KiB 11.3M/s 64KiB 15M/s 32KiB 11M/s 16KiB 6.58M/s bash-4.1# ./flashbench -O --open-au-nr=10 /dev/sdb 4MiB 13.3M/s 2MiB 12.1M/s 1MiB 10.6M/s 512KiB 8.78M/s 256KiB 13.5M/s 128KiB 11.1M/s 64KiB 15M/s 32KiB 11M/s 16KiB 6.55M/s bash-4.1# ./flashbench -O --open-au-nr=1 /dev/sdb --random 4MiB 4.95M/s 2MiB 5.13M/s 1MiB 5.27M/s 512KiB 5.32M/s 256KiB 2.94M/s 128KiB 4.56M/s 64KiB 5.91M/s 32KiB 5.65M/s 16KiB 3.2M/s bash-4.1# ./flashbench -O --open-au-nr=2 /dev/sdb --random 4MiB 13.3M/s 2MiB 9.34M/s 1MiB 5.85M/s 512KiB 3.75M/s 256KiB 5.2M/s 128KiB 4.23M/s 64KiB 3.14M/s 32KiB 3.05M/s 16KiB 1.87M/s bash-4.1# ./flashbench -O --open-au-nr=3 /dev/sdb --random 4MiB 13.3M/s 2MiB 9.4M/s 1MiB 5.85M/s 512KiB 3.75M/s 256KiB 5.22M/s 128KiB 4.21M/s 64KiB 3.1M/s 32KiB 3.03M/s 16KiB 1.87M/s bash-4.1# ./flashbench -O --open-au-nr=1 /dev/sdb --random --blocksize=512 4MiB 13.4M/s 2MiB 9.25M/s 1MiB 5.89M/s 512KiB 3.79M/s 256KiB 5.54M/s 128KiB 4.64M/s 64KiB 3.61M/s 32KiB 4.18M/s 16KiB 2.84M/s 8KiB 1.34M/s 4KiB 843K/s 2KiB 386K/s 1KiB 188K/s 512B 102K/s bash-4.1# s 32KiB 10.9M/s bash-4.1# ./flashbench /dev/sdb --blocksize=32768 --open-au --open-au-nr=6 --erasesize=8388608 8MiB 13.4M/s 4MiB 13.4M/s 2MiB 13.1M/s 1MiB 12.5M/s 512KiB 13.6M/s 256KiB 13.5M/s 128KiB 11.1M/s 64KiB 15M/s 32KiB 11M/s bash-4.1# -blocksize=4096 4MiB 4.96M/s 2MiB 5.01M/s 1MiB 5.04M/s 512KiB 5.16M/s 256KiB 5.06M/s 128KiB 4.61M/s 64KiB 5.16M/s 32KiB 5.64M/s 16KiB 4.37M/s 8KiB 2.02M/s 4KiB 1.52M/s bash-4.1# ./flashbench --open-au --open-au-nr=1 /dev/sdb --erasesize=$[4 * 1024 * 1024] --blocksize=8192 4MiB 13.2M/s 2MiB 13.2M/s 1MiB 13.5M/s 512KiB 13.8M/s 256KiB 14.5M/s 128KiB 11.2M/s 64KiB 16.1M/s 32KiB 11.9M/s 16KiB 7.34M/s 8KiB 2.96M/s bash-4.1# ./flashbench --open-au --open-au-nr=2 /dev/sdb --erasesize=$[4 * 1024 * 1024] --blocksize=8192 4MiB 13.7M/s 2MiB 13.2M/s 1MiB 13.5M/s 512KiB 13.6M/s 256KiB 13.6M/s 128KiB 11.2M/s 64KiB 15.2M/s 32KiB 10.9M/s 16KiB 6.62M/s 8KiB 2.91M/s bash-4.1# ./flashbench --open-au --open-au-nr=3 /dev/sdb --erasesize=$[4 * 1024 * 1024] --blocksize=8192 4MiB 13.4M/s 2MiB 13.2M/s 1MiB 13.4M/s 512KiB 14.2M/s 256KiB 13.5M/s 128KiB 11.4M/s 64KiB 15.4M/s 32KiB 10.9M/s 16KiB 6.6M/s 8KiB 2.85M/s bash-4.1# ./flashbench --open-au --open-au-nr=4 /dev/sdb --erasesize=$[4 * 1024 * 1024] --blocksize=8192 4MiB 13.3M/s 2MiB 13.4M/s 1MiB 13.4M/s 512KiB 13.6M/s 256KiB 10.9M/s 128KiB 11.3M/s 64KiB 15M/s 32KiB 10.8M/s 16KiB 6.57M/s 8KiB 2.83M/s bash-4.1# ./flashbench --open-au --open-au-nr=5 /dev/sdb --erasesize=$[4 * 1024 * 1024] --blocksize=8192 4MiB 13.5M/s 2MiB 13.3M/s 1MiB 13.6M/s 512KiB 13.6M/s 256KiB 13.5M/s 128KiB 11.1M/s 64KiB 15.1M/s 32KiB 10.9M/s 16KiB 6.84M/s 8KiB 2.84M/s bash-4.1# ./flashbench --open-au --open-au-nr=5 /dev/sdb --erasesize=$[4 * 1024 * 1024] 4MiB 13.6M/s 2MiB 13.2M/s 1MiB 13.4M/s 512KiB 13.6M/s 256KiB 13.5M/s 128KiB 11.3M/s 64KiB 15.1M/s 32KiB 10.8M/s 16KiB 6.82M/s bash-4.1# ./flashbench --open-au --open-au-nr=5 /dev/sdb --erasesize=$[4 * 1024 * 1024] --blocksize=2048 4MiB 13.4M/s 2MiB 13.2M/s 1MiB 11.3M/s 512KiB 13.5M/s 256KiB 13.5M/s 128KiB 11.2M/s 64KiB 15.1M/s 32KiB 10.8M/s 16KiB 6.58M/s 8KiB 2.82M/s 4KiB 1.44M/s 2KiB 744K/s bash-4.1# ./flashbench --open-au --open-au-nr=4 /dev/sdb --erasesize=$[4 * 1024 * 1024] --blocksize=2048 4MiB 13.4M/s 2MiB 13.2M/s 1MiB 13.6M/s 512KiB 13.5M/s 256KiB 13.5M/s 128KiB 11.2M/s 64KiB 15M/s 32KiB 10.9M/s 16KiB 6.56M/s 8KiB 2.85M/s 4KiB 1.45M/s ^C bash-4.1# ./flashbench --open-au --open-au-nr=3 /dev/sdb --erasesize=$[4 * 1024 * 1024] --blocksize=2048 4MiB 5.12M/s 2MiB 4.94M/s 1MiB 5.02M/s 512KiB 5.08M/s 256KiB 4.77M/s 128KiB 4.19M/s 64KiB 4.38M/s 32KiB 3.44M/s 16KiB 2.45M/s 8KiB 1.77M/s 4KiB 1.45M/s 2KiB 750K/s bash-4.1# ./flashbench --open-au --open-au-nr=2 /dev/sdb --erasesize=$[4 * 1024 * 1024] --blocksize=2048 4MiB 13.7M/s 2MiB 13.1M/s 1MiB 13.5M/s 512KiB 13.7M/s 256KiB 13.5M/s 128KiB 11.2M/s 64KiB 15.2M/s 32KiB 11.9M/s 16KiB 6.61M/s 8KiB 2.83M/s 4KiB 1.44M/s ^C bash-4.1# ./flashbench --open-au --open-au-nr=1 /dev/sdb --erasesize=$[4 * 1024 * 1024] --blocksize=2048 4MiB 5.51M/s 2MiB 5.11M/s 1MiB 5.16M/s 512KiB 5.15M/s 256KiB 5.09M/s 128KiB 4.47M/s 64KiB 16.1M/s 32KiB 11.8M/s 16KiB 7.3M/s 8KiB 3.07M/s 4KiB 1.54M/s 2KiB 813K/s bash-4.1# bash-4.1# ./flashbench --open-au --open-au-nr=1 /dev/sdb --erasesize=$[4 * 1024 * 1024] --blocksize=2048 --random 4MiB 13.3M/s 2MiB 9.25M/s 1MiB 5.87M/s 512KiB 3.77M/s 256KiB 5.5M/s 128KiB 4.62M/s 64KiB 3.6M/s 32KiB 4.18M/s 16KiB 2.84M/s 8KiB 1.33M/s 4KiB 840K/s 2KiB 384K/s bash-4.1# ./flashbench --open-au --open-au-nr=2 /dev/sdb --erasesize=$[4 * 1024 * 1024] --blocksize=2048 --random 4MiB 7.8M/s 2MiB 6.77M/s 1MiB 5.83M/s 512KiB 3.74M/s 256KiB 5.22M/s 128KiB 4.21M/s 64KiB 3.09M/s 32KiB 3.04M/s 16KiB 1.87M/s 8KiB 900K/s 4KiB 521K/s ^C bash-4.1# ./flashbench --open-au --open-au-nr=3 /dev/sdb --erasesize=$[4 * 1024 * 1024] --blocksize=2048 --random 4MiB 13.3M/s 2MiB 7.64M/s 1MiB 5.83M/s 512KiB 3.74M/s 256KiB 5.18M/s 128KiB 4.2M/s 64KiB 3.1M/s 32KiB 3.04M/s 16KiB 1.86M/s 8KiB 901K/s 4KiB 520K/s ^C bash-4.1# bash-4.1# ./flashbench --findfat --fat-nr=5 --erasesize=$[4 * 1024*1024] --random --blocksize=512 /dev/sdb 4MiB 3.37M/s 5.42M/s 13.3M/s 13.4M/s 13.3M/s 2MiB 5.11M/s 5.04M/s 9.25M/s 9.17M/s 9.25M/s 1MiB 5.24M/s 5.86M/s 5.86M/s 5.85M/s 5.86M/s 512KiB 5.29M/s 3.77M/s 3.77M/s 3.76M/s 3.77M/s 256KiB 2.92M/s 5.48M/s 5.49M/s 5.49M/s 5.48M/s 128KiB 4.49M/s 4.61M/s 4.6M/s 4.6M/s 4.6M/s 64KiB 5.86M/s 3.59M/s 3.59M/s 3.59M/s 3.6M/s 32KiB 5.62M/s 4.16M/s 4.17M/s 4.17M/s 4.16M/s 16KiB 4.1M/s 2.82M/s 2.82M/s 2.82M/s 2.81M/s 8KiB 1.35M/s 1.33M/s 1.33M/s 1.33M/s 1.33M/s 4KiB 706K/s 836K/s 837K/s 836K/s 837K/s ^C bash-4.1# ./flashbench --findfat --fat-nr=5 --erasesize=$[4 * 1024*1024] --blocksize=512 /dev/sdb 4MiB 4.94M/s 13.4M/s 13.3M/s 13.3M/s 13.3M/s 2MiB 4.98M/s 13.2M/s 13.2M/s 13.2M/s 13.2M/s 1MiB 5.05M/s 13.5M/s 13.4M/s 13.5M/s 14.3M/s 512KiB 5.15M/s 13.7M/s 13.7M/s 13.8M/s 13.7M/s 256KiB 5.07M/s 13.7M/s 13.7M/s 13.8M/s 13.7M/s 128KiB 4.63M/s 11.1M/s 11.1M/s 11.2M/s 11M/s 64KiB 5.17M/s 16.1M/s 16.1M/s 16M/s 16M/s 32KiB 5.65M/s 11.9M/s 11.9M/s 11.9M/s 11.9M/s 16KiB 4.32M/s 7.33M/s 7.35M/s 7.35M/s 7.37M/s 8KiB 2.02M/s 2.95M/s 2.96M/s 2.95M/s 2.94M/s 4KiB 1.54M/s 1.54M/s 1.55M/s 1.54M/s 1.55M/s 2KiB 769K/s 812K/s 813K/s 815K/s 811K/s 1KiB 417K/s 407K/s 418K/s 418K/s 418K/s ^C bash-4.1# Again, if there are more tests you'd like to have done, just let me know and I can run them when I have a chance. I think I've rescued about as much as I can from the drive, so I should have it operational again soon :)

14 years, 4 months

2
3
0 0

SanDisk microSDHC class 4, 4 GB (for cameras)

by Peter Warasin

****************************************************** **** SanDisk microSDHC class 4, 4 GB (for cameras)**** ****************************************************** ==> /sys/block/mmcblk0/device/cid <== 0353445355303447800a58d43d00aa00 ==> /sys/block/mmcblk0/device/csd <== 400e00325b5900001d8a7f800a404000 ==> /sys/block/mmcblk0/device/scr <== 0235800100000000 ==> /sys/block/mmcblk0/device/fwrev <== 0x0 ==> /sys/block/mmcblk0/device/hwrev <== 0x8 ==> /sys/block/mmcblk0/device/cid <== 0353445355303447800a58d43d00aa00 ==> /sys/block/mmcblk0/device/manfid <== 0x000003 ==> /sys/block/mmcblk0/device/oemid <== 0x5344 ==> /sys/block/mmcblk0/device/serial <== 0x0a58d43d ==> /sys/block/mmcblk0/device/erase_size <== 512 ==> /sys/block/mmcblk0/device/preferred_erase_size <== 4194304 ==> /sys/block/mmcblk0/device/name <== SU04G ==> /sys/block/mmcblk0/device/date <== 10/2010 clock: 25000000 Hz vdd: 20 (3.2 ~ 3.3 V) bus mode: 2 (push-pull) chip select: 0 (don't care) power mode: 2 (on) bus width: 2 (4 bits) timing spec: 0 (legacy) fdisk -ul /dev/sda Disk /dev/sda: 3965 MB, 3965190144 bytes 128 heads, 32 sectors/track, 1890 cylinders, total 7744512 sectors Units = sectors of 1 * 512 = 512 bytes Disk identifier: 0x00000000 Device Boot Start End Blocks Id System /dev/sda1 1 614399 307199+ 83 Linux /dev/sda2 614400 819199 102400 83 Linux /dev/sda3 819200 1851391 516096 82 Linux swap / Solaris /dev/sda4 1851392 7364607 2756608 83 Linux $ ./flashbench -a /dev/sda3 --count=100 align 134217728 pre 2.62ms on 2.61ms post 2.57ms diff 20.6µs align 67108864 pre 2.61ms on 2.61ms post 2.57ms diff 20.3µs align 33554432 pre 2.75ms on 2.78ms post 2.59ms diff 113µs align 16777216 pre 2.54ms on 2.6ms post 2.47ms diff 91.4µs align 8388608 pre 2.61ms on 2.6ms post 2.41ms diff 93.6µs align 4194304 pre 2.61ms on 2.61ms post 2.6ms diff -1301ns align 2097152 pre 2.61ms on 2.61ms post 2.61ms diff -115ns align 1048576 pre 2.61ms on 2.61ms post 2.61ms diff 5.14µs align 524288 pre 2.61ms on 2.61ms post 2.61ms diff 2.06µs align 262144 pre 2.61ms on 2.61ms post 2.61ms diff 4.23µs align 131072 pre 2.61ms on 2.61ms post 2.61ms diff 3.11µs align 65536 pre 2.62ms on 2.62ms post 2.62ms diff 945ns align 32768 pre 2.68ms on 2.67ms post 2.7ms diff -18986n -> 8MiB (??) $ ./flashbench /dev/sda3 --open-au-nr=1 -O --blocksize=2048 --erasesize=$[1024*1024*16] 16MiB 4.31M/s 8MiB 4.25M/s 4MiB 4.44M/s 2MiB 4.44M/s 1MiB 4.51M/s 512KiB 4.41M/s 256KiB 4.19M/s 128KiB 4.16M/s 64KiB 8.05M/s 32KiB 4.69M/s 16KiB 2.25M/s 8KiB 2.22M/s 4KiB 1.41M/s 2KiB 851K/s $ ./flashbench /dev/sda3 --open-au-nr=1 -O --blocksize=2048 --erasesize=$[1024*1024*8] 8MiB 3.21M/s 4MiB 3.21M/s 2MiB 3.86M/s 1MiB 6.5M/s 512KiB 7.43M/s 256KiB 6.87M/s 128KiB 7.68M/s 64KiB 10M/s 32KiB 8.38M/s 16KiB 3.05M/s 8KiB 2.82M/s 4KiB 1.74M/s 2KiB 980K/s ./flashbench /dev/sda3 --open-au-nr=1 -O --blocksize=2048 --erasesize=$[1024*1024*1] 1MiB 6.96M/s 512KiB 7.67M/s 256KiB 7.01M/s 128KiB 7.76M/s 64KiB 10M/s 32KiB 7.65M/s 16KiB 3.07M/s 8KiB 2.94M/s 4KiB 1.71M/s 2KiB 997K/s $ ./flashbench /dev/sda3 --open-au-nr=1 -O --blocksize=2048 --erasesize=$[1024*1024*4] 4MiB 7.26M/s 2MiB 7.14M/s 1MiB 7.67M/s 512KiB 7.45M/s 256KiB 6.85M/s 128KiB 7.88M/s 64KiB 10M/s 32KiB 8.38M/s 16KiB 3.02M/s 8KiB 2.86M/s 4KiB 1.74M/s 2KiB 956K/s -> ok, so it's more likely 4MiB ? $ ./flashbench /dev/sda3 --open-au-nr=2 -O --blocksize=2048 --erasesize=$[1024*1024*4] 4MiB 5.55M/s 2MiB 7.32M/s 1MiB 7.73M/s 512KiB 7.44M/s 256KiB 6.87M/s 128KiB 7.75M/s 64KiB 9.25M/s 32KiB 8.42M/s 16KiB 3.02M/s 8KiB 2.84M/s 4KiB 1.73M/s 2KiB 972K/s $ ./flashbench /dev/sda3 --open-au-nr=5 -O --blocksize=2048 --erasesize=$[1024*1024*4] 4MiB 4.92M/s 2MiB 2.99M/s 1MiB 2.07M/s 512KiB 2.33M/s 256KiB 2.05M/s 128KiB 2.08M/s 64KiB 2.48M/s 32KiB 3.08M/s 16KiB 1.61M/s 8KiB 1.99M/s 4KiB 1.28M/s 2KiB 797K/s $ ./flashbench /dev/sda3 --open-au-nr=6 -O --blocksize=2048 --erasesize=$[1024*1024*4] 4MiB 3.91M/s 2MiB 2.73M/s 1MiB 1.65M/s 512KiB 1.45M/s 256KiB 1.4M/s 128KiB 1.49M/s 64KiB 385K/s 32KiB 2.46M/s 16KiB 1.53M/s 8KiB 1.66M/s 4KiB 1.13M/s 2KiB 705K/s $ ./flashbench /dev/sda3 --open-au-nr=7 -O --blocksize=2048 --erasesize=$[1024*1024*4] 4MiB 3.75M/s 2MiB 2.72M/s 1MiB 1.43M/s 512KiB 1.23M/s 256KiB 1.19M/s 128KiB 1.26M/s 64KiB 1.78M/s 32KiB 1.65M/s 16KiB 1.41M/s 8KiB 1.31M/s 4KiB 1.11M/s 2KiB 689K/s $ ./flashbench /dev/sda3 --open-au-nr=10 -O --blocksize=2048 --erasesize=$[1024*1024*4] 4MiB 4.25M/s 2MiB 2.98M/s 1MiB 1.26M/s 512KiB 939K/s 256KiB 902K/s 128KiB 816K/s 64KiB 306K/s 32KiB 1.12M/s 16KiB 676K/s 8KiB 503K/s ^C $ ./flashbench /dev/sda3 --open-au-nr=9 -O --blocksize=2048 --erasesize=$[1024*1024*4] 4MiB 3.16M/s 2MiB 3.02M/s 1MiB 1.26M/s 512KiB 996K/s 256KiB 971K/s ^C -> ok, would say, it's 7 blocks ./flashbench /dev/sda3 --open-au-nr=7 -O --blocksize=2048 --erasesize=$[1024*1024*4] --random 4MiB 3.52M/s 2MiB 2.93M/s 1MiB 1.38M/s 512KiB 843K/s 256KiB 474K/s ^C ./flashbench /dev/sda3 --open-au-nr=1 -O --blocksize=2048 --erasesize=$[1024*1024*4] --random 4MiB 7.25M/s 2MiB 7.38M/s 1MiB 7.67M/s 512KiB 2.44M/s 256KiB 1.13M/s 128KiB 2.06M/s 64KiB 1.2M/s 32KiB 597K/s 16KiB 301K/s 8KiB 1.32M/s 4KiB 801K/s 2KiB 439K/s -> ok, would say this card is not for random access ./flashbench /dev/sda -f --random --erasesize=$[4*1024*1024] --fat-nr=12 4MiB 3.74M/s 4.09M/s 3.37M/s 4.5M/s 4.1M/s 4.63M/s 4.63M/s 4.55M/s 4.63M/s 4.63M/s 4.69M/s 4.58M/s 2MiB 4.32M/s 4.99M/s 4.2M/s 4.14M/s 3.93M/s 4.27M/s 4.32M/s 4.32M/s 4.32M/s 4.32M/s 4.32M/s 4.3M/s 1MiB 4.34M/s 4.69M/s 4.09M/s 4.13M/s 3.86M/s 4.27M/s 4.27M/s 4.27M/s 4.28M/s 4.25M/s 4.27M/s 4.25M/s 512KiB 4.19M/s 4.33M/s 3.87M/s 3.95M/s 3.84M/s 3.94M/s 3.97M/s 3.83M/s 3.95M/s 3.95M/s 3.95M/s 3.95M/s 256KiB 1.63M/s 1.77M/s 1.55M/s 1.53M/s 1.52M/s 1.53M/s 1.53M/s 1.52M/s 1.53M/s 1.52M/s 1.52M/s 1.53M/s 128KiB 1.95M/s 2.25M/s 1.86M/s 2.13M/s 2.04M/s 2.14M/s 2.17M/s 2.17M/s 2.15M/s 2.17M/s 2.16M/s 2.16M/s 64KiB 1.21M/s 1.39M/s 1.16M/s 1.14M/s 1.14M/s 1.13M/s 1.14M/s 1.13M/s 1.14M/s 1.13M/s 1.13M/s 1.14M/s 32KiB 585K/s 738K/s 560K/s 582K/s 598K/s 589K/s 588K/s 588K/s 589K/s 588K/s 589K/s 589K/s 16KiB 301K/s 372K/s 294K/s 301K/s 302K/s 300K/s 300K/s 300K/s 300K/s 300K/s 300K/s 300K/s -- :: e n d i a n :: open source - open minds :: peter warasin :: http://www.endian.com :: peter(a)endian.com

14 years, 4 months

2
1
0 0

SanDisk microSDHC class 4, 16 GB (for mobile phones)

by Peter Warasin

************************************************************** **** SanDisk microSDHC class 4, 16 GB (for mobile phones) **** ************************************************************** ==> /sys/block/mmcblk0/device/cid <== 0353445355313647807166662100b600 ==> /sys/block/mmcblk0/device/csd <== 400e00325b59000076b27f800a404000 ==> /sys/block/mmcblk0/device/scr <== 0235800100000000 ==> /sys/block/mmcblk0/device/fwrev <== 0x0 ==> /sys/block/mmcblk0/device/hwrev <== 0x8 ==> /sys/block/mmcblk0/device/cid <== 0353445355313647807166662100b600 ==> /sys/block/mmcblk0/device/manfid <== 0x000003 ==> /sys/block/mmcblk0/device/oemid <== 0x5344 ==> /sys/block/mmcblk0/device/serial <== 0x71666621 ==> /sys/block/mmcblk0/device/erase_size <== 512 ==> /sys/block/mmcblk0/device/preferred_erase_size <== 4194304 ==> /sys/block/mmcblk0/device/name <== SU16G ==> /sys/block/mmcblk0/device/date <== 06/2011 clock: 33000000 Hz vdd: 20 (3.2 ~ 3.3 V) bus mode: 2 (push-pull) chip select: 0 (don't care) power mode: 2 (on) bus width: 2 (4 bits) timing spec: 2 (sd high-speed) fdisk -ul /dev/sda Disk /dev/sda: 15.9 GB, 15931539456 bytes 255 heads, 63 sectors/track, 1936 cylinders, total 31116288 sectors Units = sectors of 1 * 512 = 512 bytes Disk identifier: 0x00000000 Device Boot Start End Blocks Id System /dev/sda1 8192 31116287 15554048 c W95 FAT32 (LBA) ./flashbench -a /dev/sda3 --count=100 align 134217728 pre 2.07ms on 2.59ms post 1.75ms diff 681µs align 67108864 pre 2.08ms on 2.59ms post 1.79ms diff 660µs align 33554432 pre 2.09ms on 2.6ms post 1.81ms diff 647µs align 16777216 pre 2.09ms on 2.6ms post 1.81ms diff 654µs align 8388608 pre 2.09ms on 2.6ms post 1.82ms diff 647µs align 4194304 pre 2.06ms on 2.34ms post 1.83ms diff 391µs align 2097152 pre 1.84ms on 1.83ms post 1.83ms diff -3859ns align 1048576 pre 1.84ms on 1.82ms post 1.86ms diff -24890n align 524288 pre 1.84ms on 1.85ms post 1.85ms diff 2.91µs align 262144 pre 1.85ms on 1.85ms post 1.86ms diff 1.72µs align 131072 pre 1.83ms on 1.83ms post 1.82ms diff 3.73µs align 65536 pre 1.85ms on 1.84ms post 1.85ms diff -10755n align 32768 pre 1.82ms on 1.84ms post 1.84ms diff 8.97µs ./flashbench /dev/sda3 -O --open-au-nr=1 --erasesize=$[1024*1024*4] 4MiB 15.3M/s 2MiB 16M/s 1MiB 16.4M/s 512KiB 16.2M/s 256KiB 15.4M/s 128KiB 13.5M/s 64KiB 17.3M/s 32KiB 13.8M/s 16KiB 8.49M/s ./flashbench /dev/sda3 -O --open-au-nr=5 --erasesize=$[1024*1024*4] 4MiB 4.28M/s 2MiB 3.13M/s 1MiB 3.43M/s 512KiB 3.5M/s 256KiB 3.25M/s 128KiB 3.31M/s 64KiB 4.45M/s 32KiB 6.13M/s 16KiB 4.36M/s ./flashbench /dev/sda3 -O --open-au-nr=10 --erasesize=$[1024*1024*4] 4MiB 4M/s 2MiB 2.39M/s 1MiB 1.55M/s 512KiB 1.15M/s 256KiB 1.18M/s 128KiB 1.14M/s 64KiB 1.44M/s 32KiB 2.19M/s 16KiB 1.49M/s ./flashbench /dev/sda3 -O --open-au-nr=11 --erasesize=$[1024*1024*4] --blocksize=4096 4MiB 2.92M/s 2MiB 2.33M/s 1MiB 1.52M/s 512KiB 1.06M/s 256KiB 926K/s 128KiB 906K/s 64KiB 1.1M/s 32KiB 1.34M/s 16KiB 1.35M/s 8KiB 215K/s 4KiB 170K/s -> 10 blocks ./flashbench /dev/sda3 -O --open-au-nr=10 --erasesize=$[1024*1024*4] --blocksize=4096 --random 4MiB 3.76M/s 2MiB 2.27M/s 1MiB 1.6M/s 512KiB 967K/s 256KiB 508K/s 128KiB 256K/s 64KiB 151K/s 32KiB 84.3K/s 16KiB 46.4K/s 8KiB 456K/s 4KiB 875K/s ./flashbench /dev/sda3 -O --open-au-nr=5 --erasesize=$[1024*1024*4] --blocksize=4096 --random 4MiB 3.62M/s 2MiB 4.32M/s 1MiB 2.9M/s 512KiB 2.19M/s 256KiB 1.44M/s 128KiB 801K/s 64KiB 456K/s 32KiB 255K/s 16KiB 187K/s 8KiB 794K/s 4KiB 1.1M/s -> looks like bad random access but optimized for 4KiB blocks ./flashbench /dev/sda -f --erasesize=$[1024*1024*4] --blocksize=$[1024*4] --random --fat-nr=20 4MiB 1.83M/s 14.1M/s 2.32M/s 4.57M/s 4.48M/s 4.5M/s 4.49M/s 4.53M/s 4.49M/s 4.5M/s 4.44M/s 4.43M/s 4.49M/s 4.51M/s 4.49M/s 4.51M/s 4.51M/s 4.52M/s 4.45M/s 4.49M/s 2MiB 3.24M/s 12.7M/s 3.83M/s 4.62M/s 4.57M/s 2.12M/s 4.54M/s 4.58M/s 4.52M/s 4.57M/s 4.55M/s 4.56M/s 4.54M/s 4.54M/s 4.55M/s 4.55M/s 4.55M/s 4.57M/s 4.54M/s 4.46M/s 1MiB 4.53M/s 13.9M/s 4.42M/s 4.56M/s 4.56M/s 2.13M/s 4.58M/s 4.55M/s 4.56M/s 4.55M/s 4.56M/s 4.54M/s 4.6M/s 4.56M/s 4.59M/s 4.56M/s 4.58M/s 4.54M/s 4.51M/s 4.53M/s 512KiB 4.48M/s 10.8M/s 4.42M/s 4.45M/s 3.79M/s 1.94M/s 3.77M/s 3.85M/s 3.81M/s 3.78M/s 3.83M/s 3.81M/s 3.79M/s 3.81M/s 3.82M/s 3.87M/s 3.81M/s 3.86M/s 3.79M/s 3.84M/s 256KiB 3.57M/s 10.7M/s 3.56M/s 3.61M/s 3.38M/s 1.85M/s 3.43M/s 3.44M/s 3.39M/s 3.44M/s 3.42M/s 3.39M/s 3.43M/s 3.46M/s 3.4M/s 3.43M/s 3.4M/s 3.45M/s 3.42M/s 3.45M/s 128KiB 2.23M/s 10.3M/s 2.25M/s 2.28M/s 2.24M/s 1.43M/s 2.24M/s 2.26M/s 2.25M/s 2.25M/s 2.24M/s 2.24M/s 2.24M/s 2.26M/s 2.24M/s 2.26M/s 2.25M/s 2.26M/s 2.25M/s 2.26M/s 64KiB 1.38M/s 10.1M/s 1.38M/s 1.4M/s 1.32M/s 990K/s 1.32M/s 1.33M/s 1.31M/s 1.33M/s 1.31M/s 1.33M/s 1.33M/s 1.33M/s 1.32M/s 1.33M/s 1.32M/s 1.33M/s 1.31M/s 1.32M/s 32KiB 720K/s 7.74M/s 720K/s 729K/s 714K/s 610K/s 719K/s 726K/s 715K/s 726K/s 718K/s 725K/s 718K/s 725K/s 716K/s 724K/s 717K/s 727K/s 716K/s 725K/s 16KiB 344K/s 3.9M/s 345K/s 349K/s 344K/s 320K/s 344K/s 348K/s 343K/s 348K/s 344K/s 348K/s 341K/s 348K/s 344K/s 348K/s 343K/s 348K/s 343K/s 348K/s 8KiB 1.19M/s 2.13M/s 1.15M/s 1.21M/s 1.24M/s 948K/s 1.24M/s 1.24M/s 1.24M/s 1.24M/s 1.23M/s 1.25M/s 1.24M/s 1.26M/s 1.19M/s 1.24M/s 1.23M/s 1.25M/s 1.22M/s 1.22M/s -> ok, FAT is at 8MiB as expected (?) -- :: e n d i a n :: open source - open minds :: peter warasin :: http://www.endian.com :: peter(a)endian.com

14 years, 4 months

2
1
0 0

Apacer microSDHC mobile series class 2, 16GB

by Peter Warasin

hi how stable is this card? is it a scsi harddisk? ;) ok, random is not that good ****************************************************** **** Apacer microSDHC mobile series class 2, 16GB **** ****************************************************** ==> /sys/block/mmcblk0/device/cid <== 03534453553136478070387aa500a200 ==> /sys/block/mmcblk0/device/csd <== 400e00325b59000076b27f800a404000 ==> /sys/block/mmcblk0/device/scr <== 0235800000000000 ==> /sys/block/mmcblk0/device/fwrev <== 0x0 ==> /sys/block/mmcblk0/device/hwrev <== 0x8 ==> /sys/block/mmcblk0/device/cid <== 03534453553136478070387aa500a200 ==> /sys/block/mmcblk0/device/manfid <== 0x000003 ==> /sys/block/mmcblk0/device/oemid <== 0x5344 ==> /sys/block/mmcblk0/device/serial <== 0x70387aa5 ==> /sys/block/mmcblk0/device/erase_size <== 512 ==> /sys/block/mmcblk0/device/preferred_erase_size <== 4194304 ==> /sys/block/mmcblk0/device/name <== SU16G ==> /sys/block/mmcblk0/device/date <== 02/2010 clock: 33000000 Hz vdd: 20 (3.2 ~ 3.3 V) bus mode: 2 (push-pull) chip select: 0 (don't care) power mode: 2 (on) bus width: 2 (4 bits) timing spec: 2 (sd high-speed) $ fdisk -lu /dev/sda Disk /dev/sda: 15.9 GB, 15931539456 bytes 128 heads, 32 sectors/track, 7596 cylinders, total 31116288 sectors Units = sectors of 1 * 512 = 512 bytes Disk identifier: 0x00000000 Device Boot Start End Blocks Id System /dev/sda1 1 614399 307199+ 83 Linux /dev/sda2 614400 819199 102400 83 Linux /dev/sda3 819200 1851391 516096 82 Linux swap / Solaris /dev/sda4 1851392 7364607 2756608 83 Linux $ ./flashbench -a /dev/sda3 --count=100 --blocksize=2048 align 134217728 pre 740µs on 740µs post 741µs diff -643ns align 67108864 pre 736µs on 737µs post 736µs diff 1.03µs align 33554432 pre 738µs on 742µs post 740µs diff 3.61µs align 16777216 pre 827µs on 816µs post 738µs diff 33.7µs align 8388608 pre 789µs on 810µs post 775µs diff 28.5µs align 4194304 pre 737µs on 738µs post 738µs diff 24ns align 2097152 pre 736µs on 737µs post 739µs diff -234ns align 1048576 pre 736µs on 734µs post 734µs diff -1177ns align 524288 pre 735µs on 735µs post 737µs diff -1214ns align 262144 pre 739µs on 735µs post 731µs diff -224ns align 131072 pre 737µs on 737µs post 738µs diff -650ns align 65536 pre 738µs on 736µs post 736µs diff -689ns align 32768 pre 735µs on 738µs post 732µs diff 4.52µs align 16384 pre 737µs on 738µs post 737µs diff 534ns align 8192 pre 736µs on 737µs post 736µs diff 1.38µs align 4096 pre 738µs on 732µs post 735µs diff -4358ns -> aeh? $ ./flashbench /dev/sda3 --open-au-nr=1 -O --blocksize=2048 --erasesize=$[8*1024*1024] 8MiB 1.48M/s 4MiB 3.23M/s 2MiB 3.63M/s 1MiB 3.69M/s 512KiB 3.65M/s 256KiB 3.62M/s 128KiB 3.5M/s 64KiB 3.87M/s 32KiB 3.44M/s 16KiB 3.1M/s 8KiB 2.15M/s 4KiB 1.4M/s 2KiB 813K/s $ ./flashbench /dev/sda3 --open-au-nr=1 -O --blocksize=2048 --erasesize=$[8*1024*1024] 8MiB 3.65M/s 4MiB 3.63M/s 2MiB 3.67M/s 1MiB 3.7M/s 512KiB 3.69M/s 256KiB 3.64M/s 128KiB 3.51M/s 64KiB 3.88M/s 32KiB 3.45M/s 16KiB 3.12M/s 8KiB 2.17M/s 4KiB 1.41M/s 2KiB 805K/s $ ./flashbench /dev/sda3 --open-au-nr=1 -O --blocksize=2048 --erasesize=$[8*1024*1024] 8MiB 3.73M/s 4MiB 3.67M/s 2MiB 3.73M/s 1MiB 3.76M/s 512KiB 3.73M/s 256KiB 3.73M/s 128KiB 3.56M/s 64KiB 3.97M/s 32KiB 3.54M/s 16KiB 3.16M/s 8KiB 2.19M/s 4KiB 1.4M/s 2KiB 811K/s $ ./flashbench /dev/sda3 --open-au-nr=1 -O --blocksize=2048 --erasesize=$[16*1024*1024] 16MiB 4.75M/s 8MiB 5.48M/s 4MiB 5.44M/s 2MiB 5.38M/s 1MiB 5.48M/s 512KiB 5.38M/s 256KiB 5.36M/s 128KiB 5.02M/s 64KiB 5.97M/s 32KiB 4.93M/s 16KiB 4.32M/s 8KiB 2.6M/s 4KiB 1.62M/s 2KiB 905K/s $ ./flashbench /dev/sda3 --open-au-nr=1 -O --blocksize=2048 --erasesize=$[16*1024*1024] --offset=$[2*1024*1024] 16MiB 6.04M/s 8MiB 4.57M/s 4MiB 5.31M/s 2MiB 5.3M/s 1MiB 5.38M/s 512KiB 5.32M/s 256KiB 5.24M/s 128KiB 4.94M/s 64KiB 5.85M/s 32KiB 4.86M/s 16KiB 4.29M/s 8KiB 2.57M/s 4KiB 1.62M/s 2KiB 912K/s ./flashbench /dev/sda3 --open-au-nr=1 -O --blocksize=2048 --erasesize=$[16*1024*1024] --offset=$[512] 16MiB 5.13M/s 8MiB 5.4M/s 4MiB 5.41M/s 2MiB 5.33M/s 1MiB 5.47M/s 512KiB 5.39M/s 256KiB 5.28M/s 128KiB 4.83M/s 64KiB 6.39M/s 32KiB 4.44M/s 16KiB 3.45M/s 8KiB 1.96M/s 4KiB 1.35M/s 2KiB 823K/s $ ./flashbench /dev/sda3 --open-au-nr=2 -O --blocksize=2048 --erasesize=$[16*1024*1024] 16MiB 5.69M/s 8MiB 5.66M/s 4MiB 5.57M/s 2MiB 5.23M/s 1MiB 5.56M/s 512KiB 5.47M/s 256KiB 5.42M/s 128KiB 5.1M/s 64KiB 5.52M/s 32KiB 5.02M/s 16KiB 4.31M/s 8KiB 2.51M/s 4KiB 1.58M/s 2KiB 908K/s ./flashbench /dev/sda3 --open-au-nr=5 -O --blocksize=2048 --erasesize=$[16*1024*1024] 16MiB 5.94M/s 8MiB 4.92M/s 4MiB 4.33M/s 2MiB 4.54M/s 1MiB 5.98M/s 512KiB 5.95M/s 256KiB 5.94M/s 128KiB 5.53M/s 64KiB 5.92M/s 32KiB 5.42M/s 16KiB 4.65M/s 8KiB 2.67M/s 4KiB 1.67M/s 2KiB 917K/s $ ./flashbench /dev/sda3 --open-au-nr=10 -O --blocksize=2048 --erasesize=$[16*1024*1024] 16MiB 5.79M/s 8MiB 5.28M/s 4MiB 4.25M/s 2MiB 3.05M/s 1MiB 2.04M/s 512KiB 1.02M/s 256KiB 515K/s freezes ./flashbench /dev/sda3 --open-au-nr=6 -O --blocksize=2048 --erasesize=$[16*1024*1024] 16MiB 5.5M/s 8MiB 5.06M/s 4MiB 4.29M/s 2MiB 3.1M/s 1MiB 2.08M/s 512KiB 1.03M/s 256KiB 518K/s ^C -> at least 5 blocks ./flashbench /dev/sda3 --open-au-nr=5 -O --blocksize=2048 --erasesize=$[16*1024*1024] --random 16MiB 5.22M/s 8MiB 5.04M/s 4MiB 4.14M/s 2MiB 3.09M/s 1MiB 2.19M/s 512KiB 1.13M/s 256KiB 605K/s 128KiB 300K/s ^C ./flashbench /dev/sda3 --open-au-nr=1 -O --blocksize=2048 --erasesize=$[16*1024*1024] --random 16MiB 4.65M/s 8MiB 4.69M/s 4MiB 4.65M/s 2MiB 4.71M/s 1MiB 3.66M/s 512KiB 1.75M/s 256KiB 1.28M/s 128KiB 819K/s 64KiB 542K/s 32KiB 262K/s 16KiB 127K/s 8KiB 64.4K/s -> quite slow on small blocks -> assuming 8GiB erase-size (?) $ ./flashbench /dev/sda3 -f --erasesize=$[8*1024*1024] --blocksize=2048 8MiB 5.81M/s 6.2M/s 6.64M/s 6.8M/s 6.18M/s 4.83M/s 4MiB 5.77M/s 6.49M/s 6.39M/s 6.69M/s 6.51M/s 4.68M/s 2MiB 5.68M/s 6.45M/s 6.53M/s 6.52M/s 6.48M/s 4.8M/s 1MiB 5.9M/s 6.55M/s 6.61M/s 6.74M/s 6.6M/s 4.85M/s 512KiB 5.77M/s 6.55M/s 6.52M/s 6.58M/s 6.6M/s 4.81M/s 256KiB 5.72M/s 6.49M/s 6.46M/s 6.45M/s 6.52M/s 4.77M/s 128KiB 5.3M/s 6.04M/s 6M/s 5.97M/s 6M/s 4.51M/s 64KiB 6.51M/s 7.3M/s 7.37M/s 7.5M/s 7.37M/s 5.2M/s 32KiB 5.32M/s 5.98M/s 5.92M/s 5.9M/s 6M/s 4.45M/s 16KiB 4.54M/s 5.1M/s 5.04M/s 4.94M/s 5M/s 3.84M/s 8KiB 2.67M/s 2.8M/s 2.83M/s 2.84M/s 2.88M/s 2.48M/s 4KiB 1.67M/s 1.74M/s 1.73M/s 1.73M/s 1.74M/s 1.57M/s 2KiB 934K/s 956K/s 958K/s 953K/s 954K/s 884K/s peter -- :: e n d i a n :: open source - open minds :: peter warasin :: http://www.endian.com :: peter(a)endian.com

14 years, 5 months

2
7
0 0

Emtec microSDHC class 4, 4GB

by Peter Warasin

hi guys this card seems quite unqualified ************************************** **** Emtec microSDHC class 4, 4GB **** ************************************** ==> /sys/block/mmcblk0/device/cid <== 02544d534130344706142c312600b300 ==> /sys/block/mmcblk0/device/csd <== 400e00325b5900001d6f7f800a400000 ==> /sys/block/mmcblk0/device/scr <== 0235800001000000 ==> /sys/block/mmcblk0/device/fwrev <== 0x6 ==> /sys/block/mmcblk0/device/hwrev <== 0x0 ==> /sys/block/mmcblk0/device/cid <== 02544d534130344706142c312600b300 ==> /sys/block/mmcblk0/device/manfid <== 0x000002 ==> /sys/block/mmcblk0/device/oemid <== 0x544d ==> /sys/block/mmcblk0/device/serial <== 0x142c3126 ==> /sys/block/mmcblk0/device/erase_size <== 512 ==> /sys/block/mmcblk0/device/preferred_erase_size <== 4194304 ==> /sys/block/mmcblk0/device/name <== SA04G ==> /sys/block/mmcblk0/device/date <== 03/2011 clock: 33000000 Hz vdd: 20 (3.2 ~ 3.3 V) bus mode: 2 (push-pull) chip select: 0 (don't care) power mode: 2 (on) bus width: 2 (4 bits) timing spec: 2 (sd high-speed) $ fdisk -lu /dev/sda Disk /dev/sda: 3951 MB, 3951034368 bytes 128 heads, 32 sectors/track, 1884 cylinders, total 7716864 sectors Units = sectors of 1 * 512 = 512 bytes Disk identifier: 0x00000000 Device Boot Start End Blocks Id System /dev/sda1 1 614399 307199+ 83 Linux /dev/sda2 614400 819199 102400 83 Linux /dev/sda3 819200 1851391 516096 82 Linux swap / Solaris /dev/sda4 1851392 7364607 2756608 83 Linux $ ./flashbench -a /dev/sda3 --count=100 --blocksize=2048 align 134217728 pre 894µs on 1.44ms post 1.26ms diff 362µs align 67108864 pre 919µs on 1.47ms post 1.3ms diff 358µs align 33554432 pre 894µs on 1.44ms post 1.25ms diff 362µs align 16777216 pre 880µs on 1.38ms post 1.24ms diff 326µs align 8388608 pre 872µs on 1.38ms post 1.23ms diff 329µs align 4194304 pre 880µs on 1.38ms post 1.23ms diff 326µs align 2097152 pre 1.13ms on 1.13ms post 1.12ms diff 1.58µs align 1048576 pre 1.01ms on 984µs post 982µs diff -12970n align 524288 pre 1.16ms on 1.12ms post 1.11ms diff -16689n align 262144 pre 1.02ms on 986µs post 984µs diff -18236n align 131072 pre 1.13ms on 1.12ms post 1.11ms diff -2203ns align 65536 pre 1.06ms on 987µs post 979µs diff -31308n align 32768 pre 1.13ms on 1.13ms post 1.11ms diff 3.15µs align 16384 pre 1.03ms on 986µs post 980µs diff -21555n align 8192 pre 1.12ms on 1.11ms post 1.11ms diff -8334ns align 4096 pre 1.23ms on 1.19ms post 1.18ms diff -11449n -> 4MiB eraseblock $ ./flashbench /dev/sda3 --open-au-nr=1 -O --blocksize=2048 4MiB 6.62M/s 2MiB 4.95M/s 1MiB 4.99M/s 512KiB 4.94M/s 256KiB 4.88M/s 128KiB 4.64M/s 64KiB 6M/s 32KiB 4.61M/s 16KiB 3.91M/s 8KiB 3.15M/s 4KiB 2.4M/s 2KiB 25.3K/s $ ./flashbench /dev/sda3 --open-au-nr=2 -O --blocksize=2048 4MiB 5.68M/s 2MiB 3.05M/s 1MiB 1.56M/s 512KiB 797K/s 256KiB 404K/s 128KiB 205K/s 64KiB 103K/s 32KiB 51.6K/s freezing -> 1 block $ ./flashbench /dev/sda3 --open-au-nr=1 -O --blocksize=2048 --random 4MiB 3.33M/s 2MiB 3.3M/s 1MiB 3M/s 512KiB 1.2M/s 256KiB 671K/s 128KiB 310K/s 64KiB 150K/s 32KiB 81.9K/s 16KiB 40.5K/s 8KiB 20.6K/s ^C -> unqualified for random access $ ./flashbench /dev/sda3 -f --erasesize=$[4*1024*1024] 4MiB 3.31M/s 5.06M/s 5.02M/s 5.01M/s 4.93M/s 5M/s 2MiB 4.96M/s 5.04M/s 4.98M/s 5.01M/s 5.02M/s 5.04M/s 1MiB 4.99M/s 5.01M/s 4.98M/s 5.01M/s 5.01M/s 5.02M/s 512KiB 4.99M/s 5.06M/s 5.04M/s 4.96M/s 4.97M/s 4.95M/s 256KiB 4.85M/s 5.01M/s 4.98M/s 5M/s 5.03M/s 5.05M/s 128KiB 4.66M/s 4.84M/s 4.87M/s 4.88M/s 4.93M/s 4.88M/s 64KiB 6M/s 5.47M/s 5.43M/s 5.11M/s 5.35M/s 5.38M/s 32KiB 4.59M/s 5.27M/s 5.23M/s 5.29M/s 5.2M/s 5.21M/s 16KiB 3.87M/s 4.29M/s 4.3M/s 4.24M/s 4.29M/s 4.3M/s what can i say with these? peter -- :: e n d i a n :: open source - open minds :: peter warasin :: http://www.endian.com :: peter(a)endian.com

14 years, 5 months

2
3
0 0

Lexar mobile microSDHC class 6, 16 GB

by Peter Warasin

Hi guys also a good card looks like same manfid and controller like the first filemate card in your list *********************************************** **** Lexar mobile microSDHC class 6, 16 GB **** *********************************************** ==> /sys/block/mmcblk0/device/cid <== 2842454c455841521029101ade00ac00 ==> /sys/block/mmcblk0/device/csd <== 400e00325b590000774d7f800a400000 ==> /sys/block/mmcblk0/device/scr <== 0235800000000000 ==> /sys/block/mmcblk0/device/fwrev <== 0x0 ==> /sys/block/mmcblk0/device/hwrev <== 0x1 ==> /sys/block/mmcblk0/device/cid <== 2842454c455841521029101ade00ac00 ==> /sys/block/mmcblk0/device/manfid <== 0x000028 ==> /sys/block/mmcblk0/device/oemid <== 0x4245 ==> /sys/block/mmcblk0/device/serial <== 0x29101ade ==> /sys/block/mmcblk0/device/erase_size <== 512 ==> /sys/block/mmcblk0/device/preferred_erase_size <== 4194304 ==> /sys/block/mmcblk0/device/name <== LEXAR ==> /sys/block/mmcblk0/device/date <== 12/2010 clock: 33000000 Hz vdd: 20 (3.2 ~ 3.3 V) bus mode: 2 (push-pull) chip select: 0 (don't care) power mode: 2 (on) bus width: 2 (4 bits) timing spec: 2 (sd high-speed) $ fdisk -lu /dev/sda Disk /dev/sda: 16.0 GB, 16012804096 bytes 128 heads, 32 sectors/track, 7635 cylinders, total 31275008 sectors Units = sectors of 1 * 512 = 512 bytes Disk identifier: 0x00000000 Device Boot Start End Blocks Id System /dev/sda1 1 614399 307199+ 83 Linux /dev/sda2 614400 819199 102400 83 Linux /dev/sda3 819200 1851391 516096 82 Linux swap / Solaris /dev/sda4 1851392 7364607 2756608 83 Linux $ ./flashbench -a /dev/sda3 --count=100 --blocksize=2048 align 134217728 pre 722µs on 853µs post 722µs diff 131µs align 67108864 pre 724µs on 857µs post 724µs diff 133µs align 33554432 pre 726µs on 853µs post 724µs diff 128µs align 16777216 pre 724µs on 853µs post 721µs diff 131µs align 8388608 pre 721µs on 845µs post 717µs diff 126µs align 4194304 pre 722µs on 726µs post 722µs diff 3.42µs align 2097152 pre 726µs on 726µs post 724µs diff 1.07µs align 1048576 pre 725µs on 728µs post 728µs diff 2.17µs align 524288 pre 729µs on 729µs post 729µs diff -275ns align 262144 pre 727µs on 728µs post 727µs diff 541ns align 131072 pre 723µs on 725µs post 727µs diff 542ns align 65536 pre 722µs on 720µs post 721µs diff -1576ns align 32768 pre 728µs on 726µs post 727µs diff -1480ns align 16384 pre 719µs on 721µs post 713µs diff 5.35µs align 8192 pre 724µs on 730µs post 729µs diff 3.25µs align 4096 pre 727µs on 727µs post 731µs diff -1882ns -> 8MiB erase-block size $ ./flashbench --open-au --open-au-nr=1 --erasesize=$[16*1024*1024] --blocksize=$[1024*1024] /dev/sda3 16MiB 8.99M/s 8MiB 14.5M/s 4MiB 15M/s 2MiB 15.1M/s 1MiB 16M/s -> ok, definitively 8MiB erase-block size $ ./flashbench --open-au --open-au-nr=1 --erasesize=$[8*1024*1024] --blocksize=2048 /dev/sda3 8MiB 14.6M/s 4MiB 14.6M/s 2MiB 14.8M/s 1MiB 15.7M/s 512KiB 15M/s 256KiB 15.4M/s 128KiB 14.6M/s 64KiB 15.7M/s 32KiB 10.5M/s 16KiB 7.05M/s 8KiB 4.25M/s 4KiB 2.42M/s 2KiB 1.38M/s $ ./flashbench --open-au --open-au-nr=3 --erasesize=$[8*1024*1024] --blocksize=2048 /dev/sda3 8MiB 14.7M/s 4MiB 10.2M/s 2MiB 14.8M/s 1MiB 15.6M/s 512KiB 15.4M/s 256KiB 15.4M/s 128KiB 14.7M/s 64KiB 13.5M/s 32KiB 10.6M/s 16KiB 7.16M/s 8KiB 4.31M/s 4KiB 2.22M/s 2KiB 1.12M/s $ ./flashbench --open-au --open-au-nr=5 --erasesize=$[8*1024*1024] --blocksize=2048 /dev/sda3 8MiB 14.7M/s 4MiB 9.31M/s 2MiB 14.9M/s 1MiB 15.5M/s 512KiB 15.7M/s 256KiB 15.1M/s 128KiB 14.7M/s 64KiB 13.6M/s 32KiB 10.7M/s 16KiB 7.17M/s 8KiB 4.34M/s 4KiB 2.21M/s 2KiB 1.14M/s $ ./flashbench --open-au --open-au-nr=6 --erasesize=$[8*1024*1024] --blocksize=$[1024*1024] /dev/sda3 8MiB 14.8M/s 4MiB 4.07M/s 2MiB 2.34M/s 1MiB 1.28M/s -> can handle 5 blocks concurrently $ ./flashbench --open-au --open-au-nr=10 --erasesize=$[8*1024*1024] --blocksize=2048 /dev/sda3 8MiB 14.8M/s 4MiB 4.91M/s 2MiB 2.33M/s 1MiB 1.28M/s 512KiB 671K/s ^C $ ./flashbench --open-au --open-au-nr=20 --erasesize=$[8*1024*1024] /dev/sda3 8MiB 13.7M/s 4MiB 4.11M/s ^C $ ./flashbench --open-au --open-au-nr=40 --erasesize=$[8*1024*1024] /dev/sda3 8MiB 14.3M/s 4MiB 4M/s ^C $ ./flashbench --open-au --open-au-nr=100 --erasesize=$[8*1024*1024] /dev/sda3 8MiB 13.6M/s ^C $ ./flashbench --open-au --open-au-nr=300 --erasesize=$[8*1024*1024] /dev/sda3 8MiB 14.7M/s ^C -> is this some sort of caching? $ ./flashbench --open-au --open-au-nr=5 --erasesize=$[8*1024*1024] --blocksize=2048 /dev/sda3 --random 8MiB 13.3M/s 4MiB 13.3M/s 2MiB 13.4M/s 1MiB 13.7M/s 512KiB 12.6M/s 256KiB 11.9M/s 128KiB 10.6M/s 64KiB 11.3M/s 32KiB 8.21M/s 16KiB 5.16M/s 8KiB 2.92M/s 4KiB 1.2M/s 2KiB 588K/s -> still good $ ./flashbench --open-au --open-au-nr=5 --erasesize=$[8*1024*1024] --blocksize=2048 /dev/sda3 --random --offset=$[4*1024*1024] 8MiB 2.93M/s 4MiB 4.35M/s 2MiB 2.35M/s 1MiB 1.67M/s 512KiB 1.05M/s 256KiB 656K/s 128KiB 340K/s 64KiB 168K/s ^C -> unaligned: crap peter -- :: e n d i a n :: open source - open minds :: peter warasin :: http://www.endian.com :: peter(a)endian.com

14 years, 5 months

2
6
0 0

Lexar mobile microSDHC class 4, 8 GB

by Peter Warasin

hi guys seems same as class6, 16GB but it is freezing. makes the card unusable? ********************************************** **** Lexar mobile microSDHC class 4, 8 GB **** ********************************************** ==> /sys/block/mmcblk0/device/cid <== 2842454c4558415210be0131b600b500 ==> /sys/block/mmcblk0/device/csd <== 400e00325b5900003bad7f800a400000 ==> /sys/block/mmcblk0/device/scr <== 0235800000000000 ==> /sys/block/mmcblk0/device/fwrev <== 0x0 ==> /sys/block/mmcblk0/device/hwrev <== 0x1 ==> /sys/block/mmcblk0/device/cid <== 2842454c4558415210be0131b600b500 ==> /sys/block/mmcblk0/device/manfid <== 0x000028 ==> /sys/block/mmcblk0/device/oemid <== 0x4245 ==> /sys/block/mmcblk0/device/serial <== 0xbe0131b6 ==> /sys/block/mmcblk0/device/erase_size <== 512 ==> /sys/block/mmcblk0/device/preferred_erase_size <== 4194304 ==> /sys/block/mmcblk0/device/name <== LEXAR ==> /sys/block/mmcblk0/device/date <== 05/2011 clock: 33000000 Hz vdd: 20 (3.2 ~ 3.3 V) bus mode: 2 (push-pull) chip select: 0 (don't care) power mode: 2 (on) bus width: 2 (4 bits) timing spec: 2 (sd high-speed) $ fdisk -lu /dev/sda Disk /dev/sda: 8010 MB, 8010072064 bytes 128 heads, 32 sectors/track, 3819 cylinders, total 15644672 sectors Units = sectors of 1 * 512 = 512 bytes Disk identifier: 0x00000000 Device Boot Start End Blocks Id System /dev/sda1 1 614399 307199+ 83 Linux /dev/sda2 614400 819199 102400 83 Linux /dev/sda3 819200 1851391 516096 82 Linux swap / Solaris /dev/sda4 1851392 7364607 2756608 83 Linux $ ./flashbench -a /dev/sda3 --count=100 --blocksize=2048 align 134217728 pre 738µs on 968µs post 863µs diff 168µs align 67108864 pre 742µs on 973µs post 868µs diff 168µs align 33554432 pre 737µs on 970µs post 864µs diff 170µs align 16777216 pre 741µs on 974µs post 859µs diff 174µs align 8388608 pre 742µs on 973µs post 863µs diff 171µs align 4194304 pre 738µs on 975µs post 868µs diff 172µs align 2097152 pre 743µs on 855µs post 852µs diff 57.2µs align 1048576 pre 741µs on 854µs post 867µs diff 49.7µs align 524288 pre 739µs on 864µs post 867µs diff 60.4µs align 262144 pre 738µs on 866µs post 867µs diff 63.4µs align 131072 pre 737µs on 863µs post 868µs diff 60.9µs align 65536 pre 733µs on 882µs post 869µs diff 81.6µs align 32768 pre 730µs on 870µs post 865µs diff 73µs align 16384 pre 737µs on 886µs post 869µs diff 83µs align 8192 pre 734µs on 872µs post 868µs diff 70.4µs align 4096 pre 733µs on 872µs post 864µs diff 73.4µs -> 4MiB erase-block $ ./flashbench /dev/sda3 --open-au-nr=1 -O --blocksize=2048 4MiB 11.1M/s 2MiB 11.1M/s 1MiB 11.4M/s 512KiB 10.5M/s 256KiB 11M/s 128KiB 10.9M/s 64KiB 11.5M/s 32KiB 9.48M/s 16KiB 7.71M/s 8KiB 4.66M/s 4KiB 2.54M/s 2KiB 1.47M/s $ ./flashbench /dev/sda3 --open-au-nr=5 -O --blocksize=2048 4MiB 11.1M/s 2MiB 5.86M/s 1MiB 11.1M/s 512KiB 11.3M/s 256KiB 11.2M/s 128KiB 10.6M/s 64KiB 10.9M/s 32KiB 9.4M/s 16KiB 7.54M/s 8KiB 4.57M/s 4KiB 2.34M/s 2KiB 1.19M/s $ ./flashbench /dev/sda3 --open-au-nr=10 -O --blocksize=2048 4MiB 9.56M/s 2MiB 3.2M/s 1MiB 1.8M/s 512KiB 986K/s 256KiB 516K/s 128KiB 252K/s freezing, also 2nd time (!!!) $ ./flashbench /dev/sda3 --open-au-nr=6 -O --blocksize=2048 4MiB 7.93M/s 2MiB 3.27M/s 1MiB 1.8M/s 512KiB 988K/s 256KiB 517K/s 128KiB 264K/s 64KiB 137K/s 32KiB 68.7K/s freezes (!!!) -> can handle 5 blocks -> what fishy is going on that it freezes with more? -> is this card useful at all if it behaves like this? $ ./flashbench /dev/sda3 --open-au-nr=5 -O --blocksize=2048 4MiB 10.1M/s 2MiB 10.4M/s 1MiB 10.5M/s 512KiB 10.3M/s 256KiB 10.1M/s 128KiB 9.51M/s 64KiB 9.54M/s 32KiB 7.66M/s 16KiB 5.48M/s 8KiB 3.17M/s 4KiB 1.64M/s 2KiB 901K/s $ ./flashbench /dev/sda3 --open-au-nr=5 -O --blocksize=2048 --random 4MiB 10.7M/s 2MiB 10.5M/s 1MiB 10.5M/s 512KiB 10.2M/s 256KiB 9.75M/s 128KiB 9.67M/s 64KiB 9.54M/s 32KiB 7.59M/s 16KiB 5.5M/s 8KiB 3.19M/s 4KiB 1.25M/s 2KiB 613K/s -> random is also good, same cutoff peter -- :: e n d i a n :: open source - open minds :: peter warasin :: http://www.endian.com :: peter(a)endian.com

14 years, 5 months

2
3
0 0

IPPBX for Local Distributors

by Alex Hua

14 years, 5 months

1
0
0 0

Lexar mobile microSDHC class 6, 8GB

by Peter Warasin

Hi Guys I *think* this card is not that bad. ********************************************** **** Lexar mobile microSDHC class 6, 8 GB **** ********************************************** ==> /sys/block/mmcblk0/device/cid <== 0941502020202020102180020900b400 ==> /sys/block/mmcblk0/device/csd <== 400e00325b5900003bad7f800a400000 ==> /sys/block/mmcblk0/device/scr <== 0235800000000000 ==> /sys/block/mmcblk0/device/fwrev <== 0x0 ==> /sys/block/mmcblk0/device/hwrev <== 0x1 ==> /sys/block/mmcblk0/device/cid <== 0941502020202020102180020900b400 ==> /sys/block/mmcblk0/device/manfid <== 0x000009 ==> /sys/block/mmcblk0/device/oemid <== 0x4150 ==> /sys/block/mmcblk0/device/serial <== 0x21800209 ==> /sys/block/mmcblk0/device/erase_size <== 512 ==> /sys/block/mmcblk0/device/preferred_erase_size <== 4194304 ==> /sys/block/mmcblk0/device/name <== ==> /sys/block/mmcblk0/device/date <== 04/2011 clock: 33000000 Hz vdd: 20 (3.2 ~ 3.3 V) bus mode: 2 (push-pull) chip select: 0 (don't care) power mode: 2 (on) bus width: 2 (4 bits) timing spec: 2 (sd high-speed) ./flashbench -a /dev/sda3 --count=100 --blocksize=2048 align 134217728 pre 744µs on 982µs post 863µs diff 178µs align 67108864 pre 744µs on 981µs post 861µs diff 178µs align 33554432 pre 743µs on 967µs post 862µs diff 165µs align 16777216 pre 742µs on 970µs post 866µs diff 166µs align 8388608 pre 744µs on 974µs post 862µs diff 171µs align 4194304 pre 746µs on 961µs post 865µs diff 156µs align 2097152 pre 744µs on 855µs post 863µs diff 51.3µs align 1048576 pre 744µs on 854µs post 867µs diff 48.1µs align 524288 pre 743µs on 855µs post 868µs diff 50.1µs align 262144 pre 744µs on 855µs post 867µs diff 49.6µs align 131072 pre 744µs on 862µs post 865µs diff 57.1µs align 65536 pre 745µs on 867µs post 860µs diff 64.9µs align 32768 pre 744µs on 870µs post 867µs diff 64.3µs align 16384 pre 743µs on 868µs post 863µs diff 64.5µs align 8192 pre 742µs on 868µs post 864µs diff 64.8µs align 4096 pre 744µs on 865µs post 867µs diff 59.3µs -> 4MiB erase block ./flashbench /dev/sda3 --open-au-nr=5 -O --blocksize=2048 4MiB 8.69M/s 2MiB 5.31M/s 1MiB 11M/s 512KiB 11M/s 256KiB 10.8M/s 128KiB 10.5M/s 64KiB 10.4M/s 32KiB 9.19M/s 16KiB 7.25M/s 8KiB 4.43M/s 4KiB 2.26M/s 2KiB 1.16M/s ./flashbench /dev/sda3 --open-au-nr=6 -O --blocksize=2048 4MiB 8.78M/s 2MiB 3.95M/s 1MiB 1.71M/s 512KiB 969K/s 256KiB 487K/s -> deals well with 5 blocks ./flashbench /dev/sda3 --open-au-nr=5 -O --blocksize=2048 --random 4MiB 8.09M/s 2MiB 8.24M/s 1MiB 10.1M/s 512KiB 9.9M/s 256KiB 9.34M/s 128KiB 8.49M/s 64KiB 9.02M/s 32KiB 7.27M/s 16KiB 5.2M/s 8KiB 3.02M/s 4KiB 1.19M/s 2KiB 582K/s ./flashbench /dev/sda3 --open-au-nr=5 -O --blocksize=2048 --random 4MiB 10.2M/s 2MiB 9.95M/s 1MiB 10.1M/s 512KiB 9.89M/s 256KiB 9.7M/s 128KiB 9.3M/s 64KiB 9.07M/s 32KiB 7.31M/s 16KiB 5.21M/s 8KiB 3.02M/s 4KiB 1.2M/s 2KiB 584K/s -> looks quite fair enough also on random access ./flashbench /dev/sda3 --open-au-nr=5 -O --blocksize=2048 --random --offset=$[123 * 512] 4MiB 4.49M/s 2MiB 2.28M/s 1MiB 2.27M/s 512KiB 2.23M/s 256KiB 2.19M/s 128KiB 2.13M/s 64KiB 2.1M/s 32KiB 1.34M/s 16KiB 756K/s 8KiB 398K/s 4KiB 206K/s -> unaligned quite slow peter -- :: e n d i a n :: open source - open minds :: peter warasin :: http://www.endian.com :: peter(a)endian.com

14 years, 5 months

2
7
0 0

mobile ultra microSDHC class 4, 8GB

by Peter Warasin

Hi guys ****************************************************** **** SanDisk mobile ultra microSDHC class 4, 8 GB **** ****************************************************** ==> /sys/block/mmcblk0/device/cid <== 0353445355303847800c2dc23b00ac00 ==> /sys/block/mmcblk0/device/csd <== 400e00325b5900003b377f800a404000 ==> /sys/block/mmcblk0/device/scr <== 0235800100000000 ==> /sys/block/mmcblk0/device/fwrev <== 0x0 ==> /sys/block/mmcblk0/device/hwrev <== 0x8 ==> /sys/block/mmcblk0/device/cid <== 0353445355303847800c2dc23b00ac00 ==> /sys/block/mmcblk0/device/manfid <== 0x000003 ==> /sys/block/mmcblk0/device/oemid <== 0x5344 ==> /sys/block/mmcblk0/device/serial <== 0x0c2dc23b ==> /sys/block/mmcblk0/device/erase_size <== 512 ==> /sys/block/mmcblk0/device/preferred_erase_size <== 4194304 ==> /sys/block/mmcblk0/device/name <== SU08G ==> /sys/block/mmcblk0/device/date <== 12/2010 clock: 33000000 Hz vdd: 20 (3.2 ~ 3.3 V) bus mode: 2 (push-pull) chip select: 0 (don't care) power mode: 2 (on) bus width: 2 (4 bits) timing spec: 2 (sd high-speed) $ ./flashbench -a /dev/sda3 --count=100 align 134217728 pre 1.86ms on 2.23ms post 1.82ms diff 388µs align 67108864 pre 1.86ms on 2.23ms post 1.82ms diff 388µs align 33554432 pre 1.86ms on 2.23ms post 1.83ms diff 387µs align 16777216 pre 1.86ms on 2.23ms post 1.83ms diff 385µs align 8388608 pre 1.86ms on 2.24ms post 1.83ms diff 389µs align 4194304 pre 1.87ms on 1.98ms post 1.87ms diff 113µs align 2097152 pre 1.87ms on 1.87ms post 1.87ms diff -3574ns align 1048576 pre 1.87ms on 1.86ms post 1.87ms diff -4139ns align 524288 pre 1.87ms on 1.87ms post 1.87ms diff -414ns align 262144 pre 1.86ms on 1.87ms post 1.86ms diff 4.4µs align 131072 pre 1.86ms on 1.87ms post 1.87ms diff 2.04µs align 65536 pre 1.87ms on 1.86ms post 1.87ms diff -2116ns align 32768 pre 1.87ms on 1.87ms post 1.87ms diff 3.03µs -> erase-block size 4MiB ./flashbench --open-au --open-au-nr=1 --blocksize=2048 /dev/sda3 4MiB 6.56M/s 2MiB 6.06M/s 1MiB 11.1M/s 512KiB 12M/s 256KiB 11.7M/s 128KiB 10.7M/s 64KiB 17.2M/s 32KiB 13.1M/s 16KiB 9.51M/s 8KiB 3.2M/s 4KiB 1.79M/s 2KiB 975K/s ./flashbench --open-au --open-au-nr=2 --blocksize=2048 /dev/sda3 4MiB 10.9M/s 2MiB 10.6M/s 1MiB 11.2M/s 512KiB 11.9M/s 256KiB 12M/s 128KiB 11.2M/s 64KiB 15.1M/s 32KiB 12.9M/s 16KiB 8.77M/s 8KiB 3.16M/s 4KiB 1.8M/s 2KiB 970K/s ./flashbench --open-au --open-au-nr=3 --blocksize=2048 /dev/sda3 4MiB 6.89M/s 2MiB 10.7M/s 1MiB 11.3M/s 512KiB 11.9M/s 256KiB 12.1M/s 128KiB 11.1M/s 64KiB 14M/s 32KiB 12.6M/s 16KiB 9.26M/s 8KiB 3.16M/s 4KiB 1.78M/s 2KiB 857K/s ./flashbench --open-au --open-au-nr=4 --blocksize=2048 /dev/sda3 4MiB 6.86M/s 2MiB 4.83M/s 1MiB 4.03M/s 512KiB 4.16M/s 256KiB 4.04M/s 128KiB 4.13M/s 64KiB 5.44M/s 32KiB 5.03M/s 16KiB 4.42M/s 8KiB 2.31M/s 4KiB 1.45M/s 2KiB 873K/s ./flashbench --open-au --open-au-nr=5 --blocksize=2048 /dev/sda3 4MiB 6.39M/s 2MiB 3.08M/s 1MiB 2.24M/s 512KiB 2.62M/s 256KiB 2.37M/s 128KiB 2.35M/s 64KiB 2.9M/s 32KiB 3.79M/s 16KiB 2.9M/s 8KiB 1.97M/s 4KiB 1.24M/s 2KiB 775K/s ./flashbench --open-au --open-au-nr=6 --blocksize=2048 /dev/sda3 4MiB 3.96M/s 2MiB 2.79M/s 1MiB 1.74M/s 512KiB 1.59M/s 256KiB 1.54M/s 128KiB 1.55M/s 64KiB 211K/s 32KiB 2.21M/s 16KiB 2.36M/s 8KiB 1.69M/s 4KiB 1.28M/s 2KiB 697K/s -> can deal with 3 open erase blocks $ ./flashbench --open-au --open-au-nr=3 --blocksize=2048 /dev/sda3 --random 4MiB 3.72M/s 2MiB 3.27M/s 1MiB 11.1M/s 512KiB 2.72M/s 256KiB 1.18M/s 128KiB 2.2M/s 64KiB 1.25M/s 32KiB 609K/s 16KiB 389K/s 8KiB 1.31M/s 4KiB 809K/s 2KiB 416K/s ./flashbench --open-au --open-au-nr=3 --blocksize=2048 /dev/sda3 --random 4MiB 10.9M/s 2MiB 10.8M/s 1MiB 11.3M/s 512KiB 2.72M/s 256KiB 1.18M/s 128KiB 2.25M/s 64KiB 1.25M/s 32KiB 608K/s 16KiB 389K/s 8KiB 1.32M/s 4KiB 810K/s 2KiB 419K/s ./flashbench --open-au --open-au-nr=3 --blocksize=2048 /dev/sda3 --random 4MiB 10.9M/s 2MiB 10.6M/s 1MiB 11.3M/s 512KiB 2.71M/s 256KiB 1.18M/s 128KiB 2.25M/s 64KiB 1.25M/s 32KiB 604K/s 16KiB 389K/s 8KiB 1.33M/s 4KiB 811K/s 2KiB 418K/s -> seems quite stable for --random.. was the GC maybe running on first try? peter -- :: e n d i a n :: open source - open minds :: peter warasin :: http://www.endian.com :: peter(a)endian.com

14 years, 5 months

2
1
0 0

kingston 2GB microSD

by Peter Warasin

hi guys tests for a kingston 2GB micro SD card BTW: must these tests been done on a partition which is 4MiB aligned? $ cat /sys/kernel/debug/mmc0/ios clock: 50000000 Hz vdd: 20 (3.2 ~ 3.3 V) bus mode: 2 (push-pull) chip select: 0 (don't care) power mode: 2 (on) bus width: 2 (4 bits) timing spec: 2 (sd high-speed) $ head /sys/block/mmcblk0/device/{c*,scr,*rev,*id,serial,*size*,name,date} ==> /sys/block/mmcblk0/device/cid <== 02544d5341303247052087b4c800a800 ==> /sys/block/mmcblk0/device/csd <== 002e00325b5aa3acffffff800a800000 ==> /sys/block/mmcblk0/device/scr <== 0225800001000000 ==> /sys/block/mmcblk0/device/fwrev <== 0x5 ==> /sys/block/mmcblk0/device/hwrev <== 0x0 ==> /sys/block/mmcblk0/device/cid <== 02544d5341303247052087b4c800a800 ==> /sys/block/mmcblk0/device/manfid <== 0x000002 ==> /sys/block/mmcblk0/device/oemid <== 0x544d ==> /sys/block/mmcblk0/device/serial <== 0x2087b4c8 head: cannot open `/sys/block/mmcblk0/device/*size*' for reading: No such file or directory ==> /sys/block/mmcblk0/device/name <== SA02G ==> /sys/block/mmcblk0/device/date <== 08/2010 $ sfdisk -s /dev/mmcblk0 1927168 ./flashbench -a --blocksize=1024 /dev/mmcblk0p3 align 134217728 pre 1.69ms on 1.86ms post 1.29ms diff 375µs align 67108864 pre 1.87ms on 2.04ms post 1.35ms diff 432µs align 33554432 pre 1.91ms on 2.08ms post 1.35ms diff 455µs align 16777216 pre 1.83ms on 2ms post 1.32ms diff 426µs align 8388608 pre 1.83ms on 2ms post 1.32ms diff 426µs align 4194304 pre 1.77ms on 1.97ms post 1.29ms diff 441µs align 2097152 pre 1.8ms on 1.97ms post 1.29ms diff 425µs align 1048576 pre 1.51ms on 1.98ms post 1.29ms diff 579µs align 524288 pre 1.27ms on 1.45ms post 1.29ms diff 169µs align 262144 pre 1.27ms on 1.45ms post 1.29ms diff 169µs align 131072 pre 1.27ms on 1.45ms post 1.29ms diff 169µs align 65536 pre 1.26ms on 1.44ms post 1.29ms diff 164µs align 32768 pre 1.27ms on 1.45ms post 1.29ms diff 169µs align 16384 pre 1.29ms on 1.45ms post 1.27ms diff 168µs align 8192 pre 1.29ms on 1.46ms post 1.29ms diff 177µs align 4096 pre 1.29ms on 1.33ms post 1.29ms diff 40µs align 2048 pre 1.29ms on 1.33ms post 1.29ms diff 39.4µs i assume i see the erase-block size where pre value is smallest (??) erase-block size 64Kib? that can't possible be, can it? $ ./flashbench --open-au --open-au-nr=1 /dev/mmcblk0p3 4MiB 5.94M/s 2MiB 4.21M/s 1MiB 4.26M/s 512KiB 3.27M/s 256KiB 4.27M/s 128KiB 5.91M/s 64KiB 10.3M/s 32KiB 8.76M/s 16KiB 7.06M/s $ ./flashbench --open-au --open-au-nr=2 /dev/mmcblk0p3 4MiB 9.87M/s 2MiB 10.1M/s 1MiB 4.54M/s 512KiB 1.97M/s 256KiB 945K/s 128KiB 464K/s 64KiB 213K/s 32KiB 112K/s 16KiB 55.4K/s $ ./flashbench --open-au --open-au-nr=3 /dev/mmcblk0p3 4MiB 8.18M/s 2MiB 9.97M/s 1MiB 4.42M/s 512KiB 1.96M/s 256KiB 942K/s 128KiB 463K/s 64KiB 218K/s 32KiB 111K/s 16KiB 55.5K/s means the card can handle only 1 block at once, does it? because performance is constant only with 1 block and 4MiB erase-block should be fine (?) ./flashbench --open-au --open-au-nr=1 /dev/mmcblk0p3 --erasesize=$[1 * 1024 * 1024] 1MiB 2.72M/s 512KiB 1.97M/s 256KiB 1.98M/s 128KiB 1.97M/s 64KiB 4.25M/s 32KiB 4.03M/s 16KiB 3.6M/s $./flashbench --open-au --open-au-nr=1 /dev/mmcblk0p3 --erasesize=$[2 * 1024 * 1024] 2MiB 9.97M/s 1MiB 2.26M/s 512KiB 1.97M/s 256KiB 2.71M/s 128KiB 4.23M/s 64KiB 1.78M/s 32KiB 5.19M/s 16KiB 7.08M/s ./flashbench --open-au --open-au-nr=1 /dev/mmcblk0p3 --erasesize=$[4 * 1024 * 1024] 4MiB 6.03M/s 2MiB 4.27M/s 1MiB 3.26M/s 512KiB 3.32M/s 256KiB 3.33M/s 128KiB 6M/s 64KiB 10.3M/s 32KiB 8.96M/s 16KiB 7.05M/s so, 2MiB is better, is it? hmm, does that turbo-boost at 64KiB mean that's the correct page size? tests with --random: $ ./flashbench --open-au --open-au-nr=1 /dev/mmcblk0p3 --erasesize=$[2 * 1024 * 1024] --random 2MiB 4.27M/s 1MiB 1.76M/s 512KiB 998K/s 256KiB 633K/s 128KiB 419K/s 64KiB 325K/s 32KiB 177K/s 16KiB 86.1K/s $ ./flashbench --open-au --open-au-nr=1 /dev/mmcblk0p3 --erasesize=$[4 * 1024 * 1024] --random 4MiB 5.99M/s 2MiB 2.01M/s 1MiB 2.92M/s 512KiB 1.2M/s 256KiB 605K/s 128KiB 318K/s 64KiB 241K/s 32KiB 129K/s 16KiB 65.2K/s ./flashbench --open-au --open-au-nr=1 /dev/mmcblk0p3 --erasesize=$[1 * 1024 * 1024] --random 1MiB 2.75M/s 512KiB 804K/s 256KiB 984K/s 128KiB 377K/s 64KiB 265K/s 32KiB 186K/s 16KiB 78.8K/s ./flashbench --open-au-nr=1 --random /dev/mmcblk0p3 -O --erasesize=$[1536 * 1024] --blocksize=$[96 * 1024] 1.5MiB 3.57M/s 768KiB 1.02M/s 384KiB 1.53M/s 192KiB 546K/s 96KiB 311K/s ./flashbench --open-au-nr=1 --random /dev/mmcblk0p3 -O --erasesize=$[3072 * 1024] --blocksize=$[96 * 1024] 3MiB 5.34M/s 1.5MiB 2.29M/s 768KiB 2.1M/s 384KiB 888K/s 192KiB 470K/s 96KiB 233K/s ./flashbench --open-au-nr=1 --random /dev/mmcblk0p3 -O --erasesize=$[6144 * 1024] --blocksize=$[96 * 1024] 6MiB 6.97M/s 3MiB 2.9M/s 1.5MiB 2.61M/s 768KiB 1.49M/s 384KiB 881K/s 192KiB 442K/s 96KiB 216K/s ./flashbench --open-au-nr=1 --random /dev/mmcblk0p3 -O --erasesize=$[8192 * 1024] --blocksize=$[64 * 1024] 8MiB 7.63M/s 4MiB 3.33M/s 2MiB 3.71M/s 1MiB 2.58M/s 512KiB 1.19M/s 256KiB 604K/s 128KiB 282K/s 64KiB 242K/s hope these numbers help somehow.. i'm lost in numbers now :) peter -- :: e n d i a n :: open source - open minds :: peter warasin :: http://www.endian.com :: peter(a)endian.com

14 years, 5 months

2
3
0 0

Re: [Flashbench] flashbench sandisk 4GB class4

by Peter Warasin

[i do not shorten this msg because it was not going to the list because i did not reply to list] On 08/07/11 22:41, Arnd Bergmann wrote: > On Friday 08 July 2011 19:36:56 Peter Warasin wrote: >> Hi Arnd >> >> thank you for your help! >> >> On 08/07/11 16:55, Arnd Bergmann wrote: >>> but there is a problem using three or more. However, the >>> performance is still basically constant, so the card is >>> doing something smart. It's probably using the new Sandisk >>> trick with SLC and MLC areas. On the one hand, this is >> >> ah, so the journaling of ext3 *should* not be a problem, right? > > The journaling normally makes things worse, but by how much > depends on the card characteristics. Sometimes it's almost > nothing, sometimes it's orders of magnitude. In this case, > the answer is probably "noticeable, but not drastic". > >>> good news, because the card doesn't behave that badly, >>> on the other hand it's not easy to measure and the baseline >>> of 2 MB/s is rather slow. >> >> I see. So this means aligning to 4MB is a good thing? >> Or does this simply mean i can write 2 blocks at once? > > 4 MB alignment is always the right thing. > >>> It's still not all that bad. If you want to try other things, >>> first of all try the same with the class 10 card. Also, add the >>> '--random' flag to see if it changes anything. Any measurements >>> with '--random' are more likely to be useful than those without, >>> but it may be that the class 10 card won't like that argument >>> and becomes extremely slow. >> >> our class10 is a transcend card, so making tests with this card is like >> comparing apples with pears i think. maybe the quality of that card is >> also not the best. >> we try to get a class6 and class10 sandisk > > Transcend cards vary extremely in their quality. Even comparing two > Transcend cards with identical labels can sometimes be apples and > oranges (or pears). Some that I've seen are quite ok, others are > absolutely horrible. > > If you want to experiment more with flashbench, I suggest trying the > transcend card first, it will give you much more understandable > results, because in my experience the controllers are so much simpler > there. ok, will try that monday and send results.. >> but what --random does, isn't that more likely what a normal system does >> on the SD card when i have /var and swap on the SD card? >> so this means it is quite normal that it will be very slow, is it? > > Yes. If the card is this bad at random access, it won't work well with > Linux at all. You can either try to get a better card right away, or > continue figuring out what the card actually does. It's getting quite > interesting here, I think. > >> same test with --random: >> >> ./flashbench -O --open-au-nr=2 --random /dev/mmcblk0p3 >> 4MiB 839K/s >> 2MiB 3.26M/s >> 1MiB 8.7M/s >> 512KiB 1.48M/s >> 256KiB 731K/s >> 128KiB 952K/s >> 64KiB 1.18M/s >> 32KiB 594K/s >> 16KiB 356K/s >> >> i guess i should align to 1MB then? > > No, different issue. This card is rather tricky and what it probably > does is clean during long writes after smaller writes. If you > do "./flashbench -O --open-au-nr=2 --random /dev/mmcblk0p3 --blocksize=$[1024*1024]" > a few times repeatedly, it should get better at the second or third > run. You can normally ignore any odd results in the first one or > two rows of a test run for this reason. yes, it does, however it has very varying values when starting it a couple of times. from 2x faster to all slow. is the garbage collector slow and running all the time after 2nd try? # ./flashbench --open-au-nr=2 --random /dev/mmcblk0p3 -O 4MiB 2.16M/s 2MiB 2.86M/s 1MiB 4.2M/s 512KiB 1.47M/s 256KiB 735K/s 128KiB 904K/s 64KiB 1.12M/s 32KiB 550K/s 16KiB 360K/s # ./flashbench --open-au-nr=2 --random /dev/mmcblk0p3 -O 4MiB 3.5M/s 2MiB 6.58M/s 1MiB 9.5M/s 512KiB 1.49M/s 256KiB 734K/s 128KiB 986K/s 64KiB 1.17M/s 32KiB 589K/s 16KiB 369K/s # ./flashbench --open-au-nr=2 --random /dev/mmcblk0p3 -O 4MiB 647K/s 2MiB 603K/s 1MiB 604K/s 512KiB 631K/s 256KiB 745K/s 128KiB 987K/s 64KiB 1.17M/s 32KiB 588K/s 16KiB 309K/s # ./flashbench --open-au-nr=2 --random /dev/mmcblk0p3 -O 4MiB 652K/s 2MiB 599K/s 1MiB 604K/s 512KiB 636K/s 256KiB 736K/s 128KiB 1M/s 64KiB 1.16M/s 32KiB 540K/s 16KiB 352K/s what i also noticed on this card is that the card is running with legacy timing instead of high-speed: cat /sys/kernel/debug/mmc0/ios clock: 25000000 Hz vdd: 20 (3.2 ~ 3.3 V) bus mode: 2 (push-pull) chip select: 0 (don't care) power mode: 2 (on) bus width: 2 (4 bits) timing spec: 0 (legacy) i tried to figure out why, but most probably i guess the card will respond with SCR_SPEC_VER_1 for sda_vsn i *think*, since the controller (marvell/mvsdio) is MMC_CAP_SD_HIGHSPEED capable and i see no kernel warnings that the card is not able to do mandatory switch function will try to hardcode to SD_HIGHSPEED next week.. (for testing) could that help or is it completely irrelevant? > The result can mean one of two things: > > * the erase block size is something other than 4 MB, and you first need > to figure out the correct size to rerun it. > * The card can not actually do random writes at all, which is unusual > for Sandisk cards, but is something I've seen before in a few cases. > >> ./flashbench -O --open-au-nr=3 --random /dev/mmcblk0p3 >> 4MiB 2.84M/s >> 2MiB 2.46M/s >> 1MiB 5.23M/s >> 512KiB 1.33M/s >> 256KiB 697K/s >> 128KiB 1.08M/s >> 64KiB 904K/s >> 32KiB 534K/s >> 16KiB 360K/s >> >> ./flashbench -O --open-au-nr=5 --random /dev/mmcblk0p3 >> 4MiB 2.87M/s >> 2MiB 2.56M/s >> 1MiB 1.71M/s >> 512KiB 1.78M/s >> 256KiB 920K/s >> 128KiB 471K/s >> 64KiB 320K/s >> 32KiB 276K/s >> 16KiB 215K/s > > Not much to see here, it only shows that the card isn't all > that great for random access. > >>> You can get measurements for smaller block sizes in addition to >>> the values down to 16KB by passing --blocksize=512. This may get >>> rather slow towards the end, but is very relevant because the >>> block size used by ext3 is only 4KiB. >> >> ah great. >> ok, did i understand right that i do this tests for figuring out the >> actual values of erase block size and blocksize? >> when i know those values, what do i do with them? align partitions to >> erase block size and format filesystem with SD blocksize (if possible)? > > Correct for erasesize, that should be the partition alignment. Possible > values here are 1.5MB, 2MB, 3MB, 4MB, 6MB and 8 MB, I haven't seen > anything else with SD cards yet. > > The blocksize argument you pass to flashbench only affects how many > tests are done. By default, it assumes blocksize=16384 and stops there, aaah, i understand. > but you can pass any other blocksize that is a multiple of 512 > and a power-of-two fraction of the erasesize. When you pass blocksize=512, > flashbench will print five more lines of output, but typically get > very slow. The blocksize that you should use in the file system is the > smallest number where flashbench gives a non-catastrophic result. > Often you see something like > > ... > 64KiB 3.2M/s > 32KiB 2.0M/s > 16KiB 1.6M/s > 8KiB 821K/s > 4KiB 401K/s > 2KiB 198K/s > 1KiB 90K/s > 512 43K/s > > In that example, the block size would be 16KB: As you can see, writing > an 8KB block actually takes longer than writing a 16KB block, so it's > never worth it from a performance PoV. > >> i guess ideal for the SD card performance would be to format with 4MiB >> blocksize, but that's impossible with ext3 and bad for me because i >> waste to much space with small files, right? > > The largest block size supported by any Linux file system today is 4KB, > but we're working on increasing that to 64KB, which is quite wasteful. ah good. so right now best i can do is using 4k blocksize for the filesystem, even when this is not the ideal size. >> is the copy-on-write feature of btrfs maybe helping? > > definitely. great. will do that >> what about swap .. does it make sense creating a swap with >> 4MiB pagesize? > > You can't. The swap page size is a property of the CPU, you don't get to > choose it. ah ok. >> last question, hope i do not stress you to much: > > Don't worry. But please try to figure out any cards that you have access > to and send the results to the mailing list, so I can add it to the > database. We have around 100 devices in there today, but every new > addition helps make us the right choices when optimizing the file > systems. ah well, will do my best when we get new cards, which i hope, since i have to solve this problem somehow :) >> during bonnie tests we had a high cpu load (90%),.. and during normal >> operation of the system iowait is going up really high (90%) which >> freezes the system then >> >> is that normal? shouldn't most calculation being done by the >> microcontroller on the SD chip? > > I haven't tried it, but bonnie is really totally useless on SD cards, > and it's absolutely possible that this is always the case. it's always the case, that the cpu load is that high only with bonnie, or under normal circumstances? i ask because someone on #linaro asked me if the device is probably not dma enabled or in 1-bit mode, which would make sense i think that if it is not dma enabled it uses cpu for everything.. however, i figured out that it is not in 1-bit mode, it is in 4-bit mode, good i guess .. but i was not able how to figure out if it is dma enabled or not. i found nothing in sourcecode but how to disable dma during loading the module, which does not apply, since the driver is compiled in. peter -- :: e n d i a n :: open source - open minds :: peter warasin :: http://www.endian.com :: peter(a)endian.com

14 years, 5 months

2
4
0 0

Verbatim Executive Metal 8GB USB

by Arnd Bergmann

arnd@wuerfel:~/flashbench$ sudo fdisk -lu /dev/sdd Disk /dev/sdd: 8011 MB, 8011120640 bytes 41 heads, 41 sectors/track, 9307 cylinders, total 15646720 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0xd45371da Device Boot Start End Blocks Id System /dev/sdd1 8064 15646719 7819328 c W95 FAT32 (LBA) arnd@wuerfel:~ $ lsusb Bus 001 Device 016: ID 18a5:0240 Verbatim, Ltd arnd@wuerfel:~/flashbench$ sudo dosfsck /dev/sdd1 dosfsck 3.0.9, 31 Jan 2010, FAT32, LFN Free cluster summary uninitialized (should be 244224) /dev/sdd1: 1 files, 1/244225 clusters arnd@wuerfel:~/flashbench$ sudo ./flashbench -a /dev/sdd --blocksize=1024 --count=32 align 1073741824 pre 544µs on 810µs post 564µs diff 257µs align 536870912 pre 565µs on 811µs post 565µs diff 246µs align 268435456 pre 558µs on 814µs post 564µs diff 253µs align 134217728 pre 558µs on 809µs post 563µs diff 248µs align 67108864 pre 562µs on 816µs post 566µs diff 252µs align 33554432 pre 566µs on 814µs post 566µs diff 248µs align 16777216 pre 568µs on 817µs post 567µs diff 250µs align 8388608 pre 561µs on 799µs post 566µs diff 235µs align 4194304 pre 561µs on 781µs post 551µs diff 225µs align 2097152 pre 561µs on 763µs post 566µs diff 200µs align 1048576 pre 562µs on 762µs post 565µs diff 199µs align 524288 pre 561µs on 763µs post 566µs diff 200µs align 262144 pre 562µs on 762µs post 565µs diff 198µs align 131072 pre 562µs on 746µs post 566µs diff 182µs align 65536 pre 561µs on 729µs post 565µs diff 167µs align 32768 pre 561µs on 764µs post 564µs diff 201µs align 16384 pre 562µs on 762µs post 567µs diff 198µs align 8192 pre 548µs on 657µs post 550µs diff 108µs align 4096 pre 562µs on 657µs post 550µs diff 101µs align 2048 pre 558µs on 648µs post 559µs diff 89.6µs arnd@wuerfel:~/flashbench$ sudo ./flashbench /dev/sdd --blocksize=1024 --open-au --open-au-nr=1 --erasesize=4194304 4MiB 13.5M/s 2MiB 4.29M/s 1MiB 12.8M/s 512KiB 4.17M/s 256KiB 11.5M/s 128KiB 3.97M/s 64KiB 4.38M/s 32KiB 11.9M/s 16KiB 2.82M/s 8KiB 1.4M/s 4KiB 713K/s 2KiB 360K/s 1KiB 181K/s arnd@wuerfel:~/flashbench$ sudo ./flashbench /dev/sdd --blocksize=32768 --open-au --open-au-nr=1 --erasesize=8388608 8MiB 14.5M/s 4MiB 13.2M/s 2MiB 13.5M/s 1MiB 13.6M/s 512KiB 13.6M/s 256KiB 12.6M/s 128KiB 11.1M/s 64KiB 16.9M/s 32KiB 11.9M/s arnd@wuerfel:~/flashbench$ sudo ./flashbench /dev/sdd --blocksize=32768 --open-au --open-au-nr=1 --erasesize=8388608 --random 8MiB 13.7M/s 4MiB 9.02M/s 2MiB 6.16M/s 1MiB 6.24M/s 512KiB 4.05M/s 256KiB 4.54M/s 128KiB 3.8M/s 64KiB 6.52M/s 32KiB 5.97M/s arnd@wuerfel:~/flashbench$ sudo ./flashbench /dev/sdd --blocksize=32768 --open-au --erasesize=8388608 --open-au-nr=2 8MiB 13.9M/s 4MiB 13.6M/s 2MiB 13.2M/s 1MiB 13.5M/s 512KiB 13.3M/s 256KiB 12.5M/s 128KiB 11.1M/s 64KiB 15.7M/s 32KiB 11.2M/s arnd@wuerfel:~/flashbench$ sudo ./flashbench /dev/sdd --blocksize=32768 --open-au --erasesize=8388608 --open-au-nr=4 8MiB 14.2M/s 4MiB 13.3M/s 2MiB 13.3M/s 1MiB 13.3M/s 512KiB 13.2M/s 256KiB 12.2M/s 128KiB 11.2M/s 64KiB 15.2M/s 32KiB 11.2M/s arnd@wuerfel:~/flashbench$ sudo ./flashbench /dev/sdd --blocksize=32768 --open-au --erasesize=8388608 --open-au-nr=6 8MiB 13.9M/s 4MiB 13.3M/s 2MiB 13.1M/s 1MiB 13.4M/s 512KiB 13.4M/s 256KiB 12.3M/s 128KiB 11.2M/s 64KiB 15.3M/s 32KiB 11.3M/s arnd@wuerfel:~/flashbench$ sudo ./flashbench /dev/sdd --open-au --erasesize=8388608 --open-au-nr=8 --blocksize=1048576 8MiB 13.5M/s 4MiB 13.4M/s 2MiB 13.2M/s 1MiB 13.3M/s arnd@wuerfel:~/flashbench$ sudo ./flashbench /dev/sdd --open-au --erasesize=8388608 --open-au-nr=10 --blocksize=1048576 8MiB 13.6M/s 4MiB 13.3M/s 2MiB 13.2M/s 1MiB 13.3M/s arnd@wuerfel:~/flashbench$ sudo ./flashbench /dev/sdd --open-au --erasesize=8388608 --open-au-nr=12 --blocksize=1048576 8MiB 13.5M/s 4MiB 13.4M/s 2MiB 13.1M/s 1MiB 13.3M/s arnd@wuerfel:~/flashbench$ sudo ./flashbench /dev/sdd --open-au --erasesize=8388608 --open-au-nr=14 --blocksize=1048576 8MiB 13.4M/s 4MiB 11.7M/s 2MiB 9.3M/s 1MiB 5.71M/s arnd@wuerfel:~/flashbench$ sudo ./flashbench /dev/sdd --open-au --erasesize=8388608 --open-au-nr=16 --blocksize=1048576 8MiB 13.8M/s 4MiB 10.6M/s 2MiB 5.95M/s 1MiB 4.14M/s arnd@wuerfel:~/flashbench$ sudo ./flashbench /dev/sdd --blocksize=512 --open-au --erasesize=8388608 --open-au-nr=13 8MiB 13.4M/s 4MiB 12.4M/s 2MiB 10.8M/s 1MiB 8.27M/s 512KiB 5.8M/s 256KiB 3.5M/s 128KiB 1.96M/s 64KiB 1.1M/s 32KiB 560K/s 16KiB 2.6M/s 8KiB 1.29M/s 4KiB 655K/s 2KiB 330K/s arnd@wuerfel:~/flashbench$ sudo ./flashbench /dev/sdd --blocksize=8192 --open-au --erasesize=8388608 --open-au-nr=12 --random 8MiB 13.4M/s 4MiB 9.03M/s 2MiB 6.17M/s 1MiB 6.24M/s 512KiB 4.06M/s 256KiB 4.54M/s 128KiB 3.8M/s 64KiB 6.47M/s 32KiB 5.79M/s 16KiB 2.72M/s 8KiB 1.33M/s arnd@wuerfel:~/flashbench$ sudo ./flashbench /dev/sdd --blocksize=8192 --open-au --erasesize=8388608 --open-au-nr=13 --random 8MiB 13.5M/s 4MiB 8.81M/s 2MiB 5.43M/s 1MiB 3.81M/s 512KiB 2.27M/s 256KiB 1.34M/s 128KiB 860K/s 64KiB 481K/s 32KiB 229K/s 16KiB 2.46M/s 8KiB 1.23M/s arnd@wuerfel:~/flashbench$ sudo ./flashbench /dev/sdd --blocksize=8192 --open-au --erasesize=8388608 --open-au-nr=12 --random --offset=$[20 * 1024 * 1024] [sudo] password for arnd: 8MiB 10.5M/s 4MiB 5.59M/s

14 years, 5 months

1
1
0 0

flashbench sandisk 4GB class4

by Peter Warasin

hi arnd and list here are my values for 4GB class4 sandisk on armv5tel (marvell kirkwood Feroceon 88FR131 rev 1 (v5l)) running 2.6.32.29 cat /sys/block/mmcblk*/device/{manfid,oemid,name,serial,date} 0x000003 0x5344 SU04G 0x03a847f0 10/2010 ./flashbench -O --open-au-nr=1 /dev/mmcblk0p3 4MiB 9.06M/s 2MiB 9.23M/s 1MiB 8.88M/s 512KiB 9M/s 256KiB 8.86M/s 128KiB 9.48M/s 64KiB 9.48M/s 32KiB 8.29M/s 16KiB 3.14M/s ./flashbench -O --open-au-nr=2 /dev/mmcblk0p3 4MiB 2.08M/s 2MiB 2.21M/s 1MiB 6.72M/s 512KiB 9.4M/s 256KiB 8.72M/s 128KiB 9.04M/s 64KiB 9.49M/s 32KiB 8.31M/s 16KiB 2.34M/s ./flashbench -O --open-au-nr=3 /dev/mmcblk0p3 4MiB 2.79M/s 2MiB 2.36M/s 1MiB 2.39M/s 512KiB 3.04M/s 256KiB 2.31M/s 128KiB 2.04M/s 64KiB 2.48M/s 32KiB 2.06M/s 16KiB 1.32M/s ./flashbench -O --open-au-nr=4 /dev/mmcblk0p3 4MiB 3.34M/s 2MiB 2.32M/s 1MiB 2.37M/s 512KiB 2.46M/s 256KiB 1.52M/s 128KiB 3.17M/s 64KiB 2.44M/s 32KiB 1.88M/s 16KiB 1.01M/s ./flashbench -O --open-au-nr=5 /dev/mmcblk0p3 4MiB 1.86M/s 2MiB 2.18M/s 1MiB 1.96M/s 512KiB 1.73M/s 256KiB 1.49M/s 128KiB 1.82M/s 64KiB 2.12M/s 32KiB 1.73M/s 16KiB 829K/s ./flashbench -O --open-au-nr=8 /dev/mmcblk0p3 4MiB 2M/s 2MiB 2.09M/s 1MiB 1.27M/s 512KiB 875K/s 256KiB 836K/s 128KiB 946K/s 64KiB 978K/s 32KiB 788K/s 16KiB 708K/s ./flashbench -O --open-au-nr=10 /dev/mmcblk0p3 4MiB 1.53M/s 2MiB 1.92M/s 1MiB 1.15M/s 512KiB 723K/s 256KiB 710K/s 128KiB 562K/s 64KiB 579K/s 32KiB 270K/s 16KiB 245K/s thank you in advance peter (aka _r3_@freenode) -- :: e n d i a n :: open source - open minds :: peter warasin :: http://www.endian.com :: peter(a)endian.com

14 years, 5 months

2
2
0 0

PQI microSD 8GB (2009)

by Arnd Bergmann

Disk /dev/mmcblk0: 8017 MB, 8017412096 bytes 255 heads, 63 sectors/track, 974 cylinders, total 15659008 sectors Units = sectors of 1 * 512 = 512 bytes Disk identifier: 0x00000000 Device Boot Start End Blocks Id System /dev/mmcblk0p1 63 524350 262144 b W95 FAT32 Partition 1 has different physical/logical endings: phys=(1023, 254, 63) logical=(32, 163, 2) /dev/mmcblk0p2 524412 15658964 7567276+ 83 Linux ==> /sys/block/mmcblk0/device/block <== head: error reading `/sys/block/mmcblk0/device/block': Is a directory ==> /sys/block/mmcblk0/device/cid <== 1a505175534420201025503155009200 ==> /sys/block/mmcblk0/device/csd <== 400e00325f5900003bbb7f800a400000 ==> /sys/block/mmcblk0/device/date <== 02/2009 ==> /sys/block/mmcblk0/device/driver <== head: error reading `/sys/block/mmcblk0/device/driver': Is a directory ==> /sys/block/mmcblk0/device/fwrev <== 0x0 ==> /sys/block/mmcblk0/device/hwrev <== 0x1 ==> /sys/block/mmcblk0/device/manfid <== 0x00001a ==> /sys/block/mmcblk0/device/name <== uSD ==> /sys/block/mmcblk0/device/oemid <== 0x5051 ==> /sys/block/mmcblk0/device/power <== head: error reading `/sys/block/mmcblk0/device/power': Is a directory ==> /sys/block/mmcblk0/device/scr <== 0235000000000000 ==> /sys/block/mmcblk0/device/serial <== 0x25503155 ==> /sys/block/mmcblk0/device/subsystem <== head: error reading `/sys/block/mmcblk0/device/subsystem': Is a directory ==> /sys/block/mmcblk0/device/type <== SD ==> /sys/block/mmcblk0/device/uevent <== DRIVER=mmcblk MMC_TYPE=SD MMC_NAME=uSD MODALIAS=mmc:block arnd@klappe2:~/git/flashbench$ sudo ./flashbench -a /dev/mmcblk0 --blocksize=1024 --count=32 align 805306368 pre 597µs on 677µs post 576µs diff 90.1µs align 536870912 pre 579µs on 691µs post 590µs diff 106µs align 402653184 pre 587µs on 648µs post 580µs diff 64.9µs align 268435456 pre 600µs on 688µs post 585µs diff 95.5µs align 201326592 pre 590µs on 677µs post 584µs diff 90µs align 134217728 pre 591µs on 683µs post 587µs diff 94.2µs align 100663296 pre 598µs on 687µs post 590µs diff 93µs align 67108864 pre 593µs on 679µs post 588µs diff 88.5µs align 50331648 pre 592µs on 693µs post 592µs diff 100µs align 33554432 pre 595µs on 685µs post 594µs diff 90µs align 25165824 pre 594µs on 688µs post 586µs diff 98.4µs align 16777216 pre 586µs on 676µs post 596µs diff 85µs align 12582912 pre 595µs on 683µs post 589µs diff 91.2µs align 8388608 pre 591µs on 689µs post 591µs diff 97.8µs align 6291456 pre 578µs on 682µs post 586µs diff 99.4µs align 4194304 pre 598µs on 696µs post 596µs diff 98.8µs align 3145728 pre 585µs on 657µs post 606µs diff 61.7µs align 2097152 pre 605µs on 678µs post 578µs diff 86.2µs align 1572864 pre 582µs on 656µs post 600µs diff 65.6µs align 1048576 pre 584µs on 657µs post 607µs diff 61.6µs align 786432 pre 590µs on 652µs post 604µs diff 54.9µs align 524288 pre 583µs on 650µs post 599µs diff 59µs align 393216 pre 588µs on 649µs post 599µs diff 55.6µs align 262144 pre 582µs on 646µs post 600µs diff 55µs ^C arnd@klappe2:~/git/flashbench$ ^C arnd@klappe2:~/git/flashbench$ sudo ./flashbench /dev/mmcblk0 --erasesize=2097152 --open-au --open-au-nr=1 2MiB 4.48M/s 1MiB 4.15M/s 512KiB 4.16M/s 256KiB 4.45M/s 128KiB 4.76M/s 64KiB 8.51M/s 32KiB 7.23M/s 16KiB 6.18M/s arnd@klappe2:~/git/flashbench$ sudo ./flashbench /dev/mmcblk0 --erasesize=2097152 --open-au --open-au-nr=1 2MiB 8.79M/s 1MiB 4.22M/s 512KiB 4.19M/s 256KiB 4.46M/s 128KiB 4.76M/s 64KiB 8.73M/s 32KiB 7.73M/s 16KiB 6.43M/s arnd@klappe2:~/git/flashbench$ sudo ./flashbench /dev/mmcblk0 --erasesize=2097152 --open-au --open-au-nr=2 2MiB 8.71M/s 1MiB 6.25M/s 512KiB 8.8M/s 256KiB 8.84M/s 128KiB 8.82M/s 64KiB 8.79M/s 32KiB 7.79M/s 16KiB 6.4M/s arnd@klappe2:~/git/flashbench$ sudo ./flashbench /dev/mmcblk0 --erasesize=2097152 --open-au --open-au-nr=4 2MiB 8.71M/s 1MiB 6.27M/s 512KiB 8.65M/s 256KiB 8.76M/s 128KiB 8.71M/s 64KiB 8.65M/s 32KiB 7.61M/s 16KiB 6.23M/s arnd@klappe2:~/git/flashbench$ sudo ./flashbench /dev/mmcblk0 --erasesize=2097152 --open-au --open-au-nr=6 2MiB 8.82M/s 1MiB 4.86M/s 512KiB 2.06M/s 256KiB 1.15M/s 128KiB 617K/s ^C arnd@klappe2:~/git/flashbench$ sudo ./flashbench /dev/mmcblk0 --erasesize=2097152 --open-au --open-au-nr=5 2MiB 5.31M/s 1MiB 7.51M/s 512KiB 8.74M/s 256KiB 8.7M/s 128KiB 8.77M/s 64KiB 8.71M/s 32KiB 7.62M/s 16KiB 6.23M/s arnd@klappe2:~/git/flashbench$ sudo ./flashbench /dev/mmcblk0 --erasesize=2097152 --open-au --open-au-nr=5 --blocksize=512 2MiB 8M/s 1MiB 8.74M/s 512KiB 8.82M/s 256KiB 8.86M/s 128KiB 8.8M/s 64KiB 8.73M/s 32KiB 7.6M/s 16KiB 5.67M/s 8KiB 3.57M/s 4KiB 1.77M/s 2KiB 847K/s 1KiB 428K/s arnd@klappe2:~/git/flashbench$ sudo ./flashbench /dev/mmcblk0 --erasesize=2097152 --open-au --open-au-nr=5 --blocksize=512 --random 2MiB 7.04M/s 1MiB 4.17M/s 512KiB 4.09M/s 256KiB 4.21M/s 128KiB 4.2M/s 64KiB 4.17M/s 32KiB 3.5M/s 16KiB 2.78M/s 8KiB 1.83M/s 4KiB 984K/s arnd@klappe2:~/git/flashbench$ sudo ./flashbench /dev/mmcblk0 --erasesize=2097152 --open-au --open-au-nr=6 --blocksize=512 --random 2MiB 5.26M/s 1MiB 4.43M/s 512KiB 2.17M/s 256KiB 1.18M/s ^C arnd@klappe2:~/git/flashbench$ sudo ./flashbench /dev/mmcblk0 --erasesize=2097152 --blocksize=512 --findfat --random --fat-nr=9 2MiB 4.98M/s 8.8M/s 4.92M/s 4.94M/s 4.93M/s 4.9M/s 8.85M/s 8.93M/s 8.87M/s 1MiB 4.28M/s 4.22M/s 4.28M/s 4.25M/s 4.23M/s 3.09M/s 3.22M/s 3.03M/s 3.08M/s 512KiB 3.08M/s 3M/s 3.5M/s 3.04M/s 3.07M/s 3.07M/s 3.07M/s 3.09M/s 3.06M/s 256KiB 3.06M/s 3.09M/s 3.07M/s 3.06M/s 3.07M/s 3.06M/s 3.08M/s 3.06M/s 3.07M/s 128KiB 3.06M/s 3.04M/s 3.05M/s 3.05M/s 3.05M/s 3.06M/s 3.05M/s 3.08M/s 3.06M/s 64KiB 3.03M/s 3.05M/s 3.06M/s 3.06M/s 3.09M/s 3.06M/s 3.06M/s 3.03M/s 3.06M/s 32KiB 2.69M/s 2.7M/s 2.68M/s 2.71M/s 2.69M/s 2.71M/s 2.71M/s 2.69M/s 2.69M/s

14 years, 5 months

1
0
0 0

Transcend CF 4 GB 133x

by Arnd Bergmann

arnd@wuerfel:~/flashbench$ sudo fdisk -lu /dev/sdc Disk /dev/sdc: 4009 MB, 4009549824 bytes 255 heads, 63 sectors/track, 487 cylinders, total 7831152 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x001c2022 Device Boot Start End Blocks Id System /dev/sdc1 * 63 7830143 3915040+ b W95 FAT32 Partition 1 has different physical/logical endings: phys=(1023, 254, 63) logical=(487, 102, 63) arnd@wuerfel:~/flashbench$ sudo ./flashbench -a /dev/sdc --blocksize 1024 align 536870912 pre 615µs on 744µs post 497µs diff 188µs align 268435456 pre 607µs on 743µs post 530µs diff 174µs align 134217728 pre 618µs on 744µs post 535µs diff 167µs align 67108864 pre 618µs on 745µs post 574µs diff 149µs align 33554432 pre 618µs on 743µs post 500µs diff 185µs align 16777216 pre 621µs on 748µs post 518µs diff 178µs align 8388608 pre 618µs on 745µs post 517µs diff 177µs align 4194304 pre 628µs on 758µs post 551µs diff 168µs align 2097152 pre 549µs on 659µs post 568µs diff 100µs align 1048576 pre 553µs on 655µs post 550µs diff 104µs align 524288 pre 534µs on 658µs post 535µs diff 124µs align 262144 pre 536µs on 656µs post 535µs diff 120µs align 131072 pre 591µs on 655µs post 618µs diff 50.2µs align 65536 pre 567µs on 656µs post 569µs diff 88.2µs align 32768 pre 553µs on 657µs post 534µs diff 113µs align 16384 pre 553µs on 653µs post 569µs diff 92.4µs align 8192 pre 551µs on 656µs post 550µs diff 105µs align 4096 pre 534µs on 658µs post 535µs diff 124µs align 2048 pre 545µs on 656µs post 569µs diff 98.7µs arnd@wuerfel:~/flashbench$ sudo ./flashbench /dev/sdc --erasesize=4194304 --blocksi=512 --open-au --open-au-nr=1 4MiB 10.7M/s 2MiB 10.6M/s 1MiB 10.7M/s 512KiB 10.4M/s 256KiB 10.8M/s 128KiB 9.66M/s 64KiB 11.8M/s 32KiB 10.1M/s 16KiB 8.22M/s 8KiB 3.74M/s 4KiB 1.83M/s 2KiB 900K/s 1KiB 451K/s 512B 224K/s arnd@wuerfel:~/flashbench$ sudo ./flashbench /dev/sdc --erasesize=$[4194304] --blocksize=16384 --open-au --open-au-nr=2 4MiB 10.8M/s 2MiB 10.6M/s 1MiB 10.7M/s 512KiB 10.5M/s 256KiB 10.5M/s 128KiB 9.07M/s 64KiB 10.1M/s 32KiB 7.75M/s 16KiB 5.43M/s arnd@wuerfel:~/flashbench$ sudo ./flashbench /dev/sdc --erasesize=$[4194304] --blocksize=16384 --open-au --open-au-nr=4 4MiB 10.8M/s 2MiB 10.6M/s 1MiB 10.7M/s 512KiB 10.5M/s 256KiB 10.5M/s 128KiB 8.98M/s 64KiB 10M/s 32KiB 7.71M/s 16KiB 5.42M/s arnd@wuerfel:~/flashbench$ sudo ./flashbench /dev/sdc --erasesize=$[4194304] --blocksize=16384 --open-au --open-au-nr=6 4MiB 10.8M/s 2MiB 10.6M/s 1MiB 10.6M/s 512KiB 10.6M/s 256KiB 10.4M/s 128KiB 8.96M/s 64KiB 10M/s 32KiB 7.68M/s 16KiB 5.39M/s arnd@wuerfel:~/flashbench$ sudo ./flashbench /dev/sdc --erasesize=$[4194304] --blocksize=1024 --open-au --open-au-nr=11 4MiB 10.8M/s 2MiB 10.6M/s 1MiB 10.7M/s 512KiB 10.5M/s 256KiB 10.4M/s 128KiB 8.91M/s 64KiB 9.99M/s 32KiB 7.62M/s 16KiB 5.33M/s 8KiB 2.45M/s 4KiB 1.17M/s 2KiB 579K/s 1KiB 285K/s arnd@wuerfel:~/flashbench$ sudo ./flashbench /dev/sdc --erasesize=$[4194304] --blocksize=16384 --open-au --open-au-nr=12 4MiB 10.7M/s 2MiB 4.52M/s 1MiB 1.13M/s 512KiB 561K/s 256KiB 283K/s 128KiB 142K/s arnd@wuerfel:~/flashbench$ sudo ./flashbench /dev/sdc --erasesize=4194304 --blocksize=512 --open-au --open-au-nr=1 --random 4MiB 11M/s 2MiB 3.01M/s 1MiB 9.02M/s 512KiB 3.04M/s 256KiB 3.04M/s 128KiB 1.77M/s 64KiB 9.46M/s 32KiB 3.04M/s 16KiB 2.86M/s 8KiB 1.3M/s 4KiB 870K/s 2KiB 426K/s 1KiB 211K/s 512B 105K/s arnd@wuerfel:~/flashbench$ sudo ./flashbench /dev/sdc --erasesize=$[4194304] --blocksize=1024 --open-au --open-au-nr=11 --random 4MiB 10.7M/s 2MiB 3.03M/s 1MiB 3.22M/s 512KiB 3.03M/s 256KiB 3M/s 128KiB 2.68M/s 64KiB 3.12M/s 32KiB 2.77M/s 16KiB 2.4M/s 8KiB 1.43M/s 4KiB 706K/s (reverse-i-search)`da': sudo fdisk -l /dev/s^Carnd@wuerfel:~/flashbench$ sudo ./flashbench /dev/sdc --erasesize=$[4194304] --blocksize=1024 --open-au --open-au-nr=12 --random 4MiB 8.91M/s 2MiB 3.08M/s 1MiB 1.19M/s 512KiB 569K/s ^Carnd@wuerfel:~/flashbench$ sudo ./flashbench /dev/sdc --erasesize=$[4194304 * 2] --ocksize=1024 --open-au --open-au-nr=6 --random 8MiB 10M/s 4MiB 9.01M/s 2MiB 3.71M/s 1MiB 1.46M/s 512KiB 897K/s arnd@wuerfel:~/flashbench$ sudo dd if=/dev/zero of=/dev/sdc bs=1M count=100 oflag=direct 100+0 records in 100+0 records out 104857600 bytes (105 MB) copied, 10.8724 s, 9.6 MB/s

14 years, 6 months

1
2
0 0

Adata S102 USB3.0 8GB

by Arnd Bergmann

Bus 002 Device 002: ID 125f:312a A-DATA Technology Co., Ltd. arnd@klappe2:~$ sudo hexdump -C /dev/sdc 00000000 eb 58 90 4d 53 44 4f 53 35 2e 30 00 02 08 22 00 |.X.MSDOS5.0...".| 00000010 02 00 00 00 00 f8 00 00 3f 00 ff 00 00 00 00 00 |........?.......| 00000020 00 80 eb 00 c3 3a 00 00 00 00 00 00 02 00 00 00 |.....:..........| 00000030 01 00 06 00 00 00 00 00 00 00 00 00 00 00 00 00 |................| 00000040 00 00 29 73 8b 36 a8 4e 4f 20 4e 41 4d 45 20 20 |..)s.6.NO NAME | 00000050 20 20 46 41 54 33 32 20 20 20 33 c9 8e d1 bc f4 | FAT32 3.....| 00000060 7b 8e c1 8e d9 bd 00 7c 88 4e 02 8a 56 40 b4 08 |{......|.N..V@..| 00000070 cd 13 73 05 b9 ff ff 8a f1 66 0f b6 c6 40 66 0f |..s......f...(a)f.| 00000080 b6 d1 80 e2 3f f7 e2 86 cd c0 ed 06 41 66 0f b7 |....?.......Af..| 00000090 c9 66 f7 e1 66 89 46 f8 83 7e 16 00 75 38 83 7e |.f..f.F..~..u8.~| 000000a0 2a 00 77 32 66 8b 46 1c 66 83 c0 0c bb 00 80 b9 |*.w2f.F.f.......| 000000b0 01 00 e8 2b 00 e9 48 03 a0 fa 7d b4 7d 8b f0 ac |...+..H...}.}...| 000000c0 84 c0 74 17 3c ff 74 09 b4 0e bb 07 00 cd 10 eb |..t.<.t.........| 000000d0 ee a0 fb 7d eb e5 a0 f9 7d eb e0 98 cd 16 cd 19 |...}....}.......| 000000e0 66 60 66 3b 46 f8 0f 82 4a 00 66 6a 00 66 50 06 |f`f;F...J.fj.fP.| 000000f0 53 66 68 10 00 01 00 80 7e 02 00 0f 85 20 00 b4 |Sfh.....~.... ..| 00000100 41 bb aa 55 8a 56 40 cd 13 0f 82 1c 00 81 fb 55 |A..U.V@........U| 00000110 aa 0f 85 14 00 f6 c1 01 0f 84 0d 00 fe 46 02 b4 |.............F..| 00000120 42 8a 56 40 8b f4 cd 13 b0 f9 66 58 66 58 66 58 |B.V@......fXfXfX| 00000130 66 58 eb 2a 66 33 d2 66 0f b7 4e 18 66 f7 f1 fe |fX.*f3.f..N.f...| 00000140 c2 8a ca 66 8b d0 66 c1 ea 10 f7 76 1a 86 d6 8a |...f..f....v....| 00000150 56 40 8a e8 c0 e4 06 0a cc b8 01 02 cd 13 66 61 |V@............fa| 00000160 0f 82 54 ff 81 c3 00 02 66 40 49 0f 85 71 ff c3 |..T.....f@I..q..| 00000170 4e 54 4c 44 52 20 20 20 20 20 20 00 00 00 00 00 |NTLDR .....| 00000180 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................| * 000001a0 00 00 00 00 00 00 00 00 00 00 00 00 0d 0a 52 65 |..............Re| 000001b0 6d 6f 76 65 20 64 69 73 6b 73 20 6f 72 20 6f 74 |move disks or ot| 000001c0 68 65 72 20 6d 65 64 69 61 2e ff 0d 0a 44 69 73 |her media....Dis| 000001d0 6b 20 65 72 72 6f 72 ff 0d 0a 50 72 65 73 73 20 |k error...Press | 000001e0 61 6e 79 20 6b 65 79 20 74 6f 20 72 65 73 74 61 |any key to resta| 000001f0 72 74 0d 0a 00 00 00 00 00 ac cb d8 00 00 55 aa |rt............U.| arnd@klappe2:~$ sudo fsck.msdos /dev/sdc dosfsck 3.0.9, 31 Jan 2010, FAT32, LFN /dev/sdc: 1 files, 1/1925451 clusters arnd@klappe2:~/git/flashbench$ sudo ./flashbench -a /dev/sdc -b 1024 align 805306368 pre 581µs on 795µs post 581µs diff 214µs align 536870912 pre 588µs on 821µs post 592µs diff 231µs align 402653184 pre 594µs on 821µs post 596µs diff 226µs align 268435456 pre 583µs on 816µs post 593µs diff 228µs align 201326592 pre 581µs on 793µs post 585µs diff 209µs align 134217728 pre 583µs on 784µs post 582µs diff 202µs align 100663296 pre 581µs on 790µs post 581µs diff 209µs align 67108864 pre 579µs on 795µs post 581µs diff 215µs align 50331648 pre 582µs on 798µs post 585µs diff 214µs align 33554432 pre 576µs on 794µs post 579µs diff 217µs align 25165824 pre 581µs on 790µs post 582µs diff 208µs align 16777216 pre 584µs on 785µs post 573µs diff 206µs align 12582912 pre 578µs on 790µs post 570µs diff 216µs align 8388608 pre 579µs on 798µs post 580µs diff 218µs align 6291456 pre 580µs on 573µs post 579µs diff -6271ns align 4194304 pre 583µs on 795µs post 584µs diff 212µs align 3145728 pre 583µs on 575µs post 584µs diff -8901ns align 2097152 pre 573µs on 582µs post 583µs diff 4.12µs align 1572864 pre 578µs on 584µs post 585µs diff 2.43µs align 1048576 pre 580µs on 585µs post 585µs diff 2.36µs align 786432 pre 577µs on 583µs post 581µs diff 3.79µs align 524288 pre 581µs on 583µs post 576µs diff 5.01µs align 393216 pre 581µs on 585µs post 585µs diff 1.7µs align 262144 pre 577µs on 580µs post 584µs diff -1288ns align 196608 pre 574µs on 583µs post 582µs diff 4.71µs align 131072 pre 584µs on 577µs post 584µs diff -6945ns align 98304 pre 583µs on 578µs post 583µs diff -4843ns align 65536 pre 576µs on 579µs post 581µs diff 628ns align 49152 pre 583µs on 585µs post 583µs diff 1.78µs align 32768 pre 578µs on 583µs post 585µs diff 1.18µs align 24576 pre 572µs on 579µs post 577µs diff 4.39µs align 16384 pre 580µs on 583µs post 574µs diff 6.61µs align 12288 pre 575µs on 701µs post 583µs diff 122µs align 8192 pre 581µs on 585µs post 579µs diff 4.95µs align 6144 pre 580µs on 585µs post 584µs diff 2.52µs align 4096 pre 579µs on 705µs post 582µs diff 125µs align 3072 pre 580µs on 575µs post 580µs diff -4836ns align 2048 pre 571µs on 585µs post 584µs diff 7.55µs arnd@klappe2:~/git/flashbench$ sudo ./flashbench --erasesize=4194304 /dev/sdc --blocksize=512 --open-au --open-au-nr=1 4MiB 13.1M/s 2MiB 13.1M/s 1MiB 12.8M/s 512KiB 12.8M/s 256KiB 12.8M/s 128KiB 12.7M/s 64KiB 12.9M/s 32KiB 12.8M/s 16KiB 12.8M/s 8KiB 12.6M/s 4KiB 7.95M/s 2KiB 5.4M/s 1KiB 2.71M/s 512B 1.34M/s arnd@klappe2:~/git/flashbench$ sudo ./flashbench --erasesize=4194304 /dev/sdc --blocksize=512 --open-au --open-au-nr=2 4MiB 13M/s 2MiB 12.8M/s 1MiB 12.8M/s 512KiB 12.7M/s 256KiB 12.6M/s 128KiB 12.3M/s 64KiB 11.7M/s 32KiB 10.8M/s 16KiB 9.36M/s 8KiB 5.63M/s 4KiB 1.16M/s 2KiB 590K/s 1KiB 294K/s 512B 151K/s arnd@klappe2:~/git/flashbench$ sudo ./flashbench --erasesize=4194304 /dev/sdc --blocksize=4096 --open-au --open-au-nr=4 4MiB 13M/s 2MiB 12.8M/s 1MiB 12.8M/s 512KiB 12.7M/s 256KiB 12.6M/s 128KiB 12.3M/s 64KiB 11.8M/s 32KiB 10.8M/s 16KiB 9.38M/s 8KiB 5.66M/s 4KiB 856K/s arnd@klappe2:~/git/flashbench$ sudo ./flashbench --erasesize=4194304 /dev/sdc --blocksize=8192 --open-au --open-au-nr=5 4MiB 12.9M/s 2MiB 10.2M/s 1MiB 9.29M/s 512KiB 8.85M/s 256KiB 8.6M/s 128KiB 8.38M/s 64KiB 8.09M/s 32KiB 7.57M/s 16KiB 6.64M/s 8KiB 4.37M/s arnd@klappe2:~/git/flashbench$ sudo ./flashbench --erasesize=4194304 /dev/sdc --blocksize=8192 --open-au --open-au-nr=6 4MiB 12.8M/s 2MiB 9M/s 1MiB 7.83M/s 512KiB 7.33M/s 256KiB 7.07M/s 128KiB 6.86M/s 64KiB 6.66M/s 32KiB 6.27M/s 16KiB 5.59M/s 8KiB 3.34M/s arnd@klappe2:~/git/flashbench$ sudo ./flashbench --erasesize=4194304 /dev/sdc --blocksize=65536 --open-au --open-au-nr=8 4MiB 12.8M/s 2MiB 7.85M/s 1MiB 6.59M/s 512KiB 6.09M/s 256KiB 5.82M/s 128KiB 4.42M/s 64KiB 5.5M/s arnd@klappe2:~/git/flashbench$ sudo ./flashbench --erasesize=4194304 /dev/sdc --blocksize=65536 --open-au --open-au-nr=12 4MiB 12.9M/s 2MiB 6.97M/s 1MiB 5.68M/s 512KiB 3.09M/s 256KiB 3.01M/s 128KiB 4.81M/s 64KiB 4.34M/s arnd@klappe2:~/git/flashbench$ sudo ./flashbench --erasesize=4194304 /dev/sdc --blocksize=65536 --open-au --open-au-nr=16 4MiB 13M/s 2MiB 6.62M/s 1MiB 3.63M/s 512KiB 2.54M/s 256KiB 2.14M/s 128KiB 2.3M/s 64KiB 2.27M/s arnd@klappe2:~/git/flashbench$ sudo ./flashbench --erasesize=4194304 /dev/sdc --blocksize=65536 --open-au --open-au-nr=24 4MiB 12.9M/s 2MiB 5.67M/s 1MiB 1.66M/s 512KiB 750K/s ^C arnd@klappe2:~/git/flashbench$ sudo ./flashbench --erasesize=4194304 /dev/sdc --blocksize=$[512*1024] --open-au --open-au-nr=18 4MiB 12.1M/s 2MiB 6.26M/s 1MiB 2.66M/s 512KiB 1.69M/s arnd@klappe2:~/git/flashbench$ sudo ./flashbench --erasesize=4194304 /dev/sdc --blocksize=$[256*1024] --open-au --open-au-nr=20 4MiB 12.7M/s 2MiB 6.4M/s 1MiB 2.83M/s 512KiB 1.78M/s 256KiB 1.48M/s arnd@klappe2:~/git/flashbench$ sudo ./flashbench --erasesize=$[256 * 1024] /dev/sdc --blocksize=8192 --open-au --open-au-nr=16 --offset=$[24*1024*1024 + 65536] 256KiB 12.8M/s 128KiB 12.5M/s 64KiB 11.9M/s 32KiB 2.07M/s 16KiB 1.44M/s 8KiB 730K/s arnd@klappe2:~/git/flashbench$ sudo ./flashbench --erasesize=$[256 * 1024] /dev/sdc --blocksize=8192 --open-au --open-au-nr=17 --offset=$[24*1024*1024 + 65536] 256KiB 2.22M/s 128KiB 204K/s 64KiB 183K/s 32KiB 79K/s 16KiB 37.2K/s 8KiB 18.7K/s arnd@klappe2:~/git/flashbench$ sudo ./flashbench --erasesize=$[256 * 1024] /dev/sdc --blocksize=8192 --open-au --open-au-nr=20 --offset=$[24*1024*1024 + 65536] 256KiB 2.52M/s 128KiB 185K/s 64KiB 129K/s 32KiB 63.1K/s arnd@klappe2:~/git/flashbench$ sudo ./flashbench --erasesize=$[256 * 1024] /dev/sdc --blocksize=8192 --open-au --open-au-nr=16 --offset=$[24*1024*1024 + 65536] --random 256KiB 13M/s 128KiB 12.6M/s 64KiB 12M/s 32KiB 11M/s 16KiB 9.42M/s 8KiB 638K/s arnd@klappe2:~/git/flashbench$ sudo ./flashbench --erasesize=$[4194304] /dev/sdc --blocksize=$[1024] --open-au --open-au-nr=4 --random 4MiB 12.9M/s 2MiB 13M/s 1MiB 7.82M/s 512KiB 4.96M/s 256KiB 4.18M/s 128KiB 3.73M/s 64KiB 3.66M/s 32KiB 3.45M/s 16KiB 2.77M/s 8KiB 1.56M/s 4KiB 791K/s 2KiB 401K/s 1KiB 205K/s arnd@klappe2:~/git/flashbench$ sudo ./flashbench --erasesize=$[4 * 1024 * 1024] /dev/sdc --blocksize=8192 --open-au --open-au-nr=16 --offset=$[24*1024*1024] --random 4MiB 13M/s 2MiB 6.6M/s 1MiB 2.52M/s 512KiB 1.97M/s 256KiB 1.12M/s 128KiB 1.35M/s

14 years, 6 months

1
0
0 0

Pls kindly check the new item -- T010 4 cards + 2.3 Scren Black berry style

by Picasa Web Albums

Dear Friend, Nice day to you! New items with great price mobile phone here come out, pls check the attachment to info the ID. 1>4 Cards & 4 Standby 2>Bluetooth 3>2.3" QVGA Screen 4>30W Dual Cameras 5>Support T-Flash Card 6>FM Radio 7>Analog TV（option） 8>JAVA 9>Support Mp3、Mp4 10>colors：blue & red & purple & silver Anything more you want to know, please send us email. Best wishes Juce Mobile: 86-13424432252 Tel: 86-755-85282599 Fax: 86-755-81752355 E-mail: elink(a)vip.188.com Web size: www.oemmobile.com Factory Address: 5/F, Building 21, ChenTian Industrial Park, Shenzhen, GuangDong Province, China

14 years, 6 months

1
0
0 0

New item come out -- T010 4 cards + 2.3 Scren

by Picasa Web Albums

Dear Friend, Nice day to you! New items with great price mobile phone here come out, pls check the attachment to info the ID. 1>4 Cards & 4 Standby 2>Bluetooth 3>2.3" QVGA Screen 4>30W Dual Cameras 5>Support T-Flash Card 6>FM Radio 7>Analog TV（option） 8>JAVA 9>Support Mp3、Mp4 10>colors：blue & red & purple & silver Anything more you want to know, please send us email. Best wishes Juce Mobile: 86-13424432252 Tel: 86-755-85282599 Fax: 86-755-81752355 E-mail: elink(a)vip.188.com Web size: www.oemmobile.com Factory Address: 5/F, Building 21, ChenTian Industrial Park, Shenzhen, GuangDong Province, China

14 years, 6 months

1
0
0 0

Pls kindly check the new item -- T010 4 cards + 2.3 Scren Black berry style

by Picasa Web Albums

Dear Friend, Nice day to you! New items with great price mobile phone here come out, pls check the attachment to info the ID. 1>4 Cards & 4 Standby 2>Bluetooth 3>2.3" QVGA Screen 4>30W Dual Cameras 5>Support T-Flash Card 6>FM Radio 7>Analog TV（option） 8>JAVA 9>Support Mp3、Mp4 10>colors：blue & red & purple & silver Anything more you want to know, please send us email. Best wishes Juce Mobile: 86-13424432252 Tel: 86-755-85282599 Fax: 86-755-81752355 E-mail: elink(a)vip.188.com Web size: www.oemmobile.com Factory Address: 5/F, Building 21, ChenTian Industrial Park, Shenzhen, GuangDong Province, China

14 years, 6 months

1
0
0 0

Pls kindly check the new item -- T010 4 cards + 2.3 Scren Black berry style

by Picasa Web Albums

Dear Customer (Manager), Good day! New items with great price mobile phone here come out, pls check the attachment to info the ID. 1>4 Cards & 4 Standby 2>Bluetooth 3>2.3" QVGA Screen 4>30W Dual Cameras 5>Support T-Flash Card 6>FM Radio 7>Analog TV（option） 8>JAVA 9>Support Mp3、Mp4 10>colors：blue & red & purple & silver If you need the detail requirement, please don't hesitate to contact us. Best wishes Juce Mobile: 86-13424432252 Tel: 86-755-85282599 Fax: 86-755-81752355 E-mail: elink(a)vip.188.com Web size: www.oemmobile.com Factory Address: 5/F, Building 21, ChenTian Industrial Park, Shenzhen, GuangDong Province, China

14 years, 6 months

1
0
0 0

Corsair Voyager 3.0 16GB

by Michael Monnerie

Just bought a new stick, is USB 3.0 capable, I only got a USB 2.0 slot for testing, these are the results: (kernel 2.6.38.6) # lsusb -v Bus 001 Device 005: ID 1b1c:1a00 Device Descriptor: bLength 18 bDescriptorType 1 bcdUSB 2.10 bDeviceClass 0 (Defined at Interface level) bDeviceSubClass 0 bDeviceProtocol 0 bMaxPacketSize0 64 idVendor 0x1b1c idProduct 0x1a00 bcdDevice a.00 iManufacturer 1 Corsair iProduct 2 Voyager 3.0 iSerial 3 09021000000000000000001038 bNumConfigurations 1 Configuration Descriptor: bLength 9 bDescriptorType 2 wTotalLength 32 bNumInterfaces 1 bConfigurationValue 1 iConfiguration 0 bmAttributes 0x80 (Bus Powered) MaxPower 500mA Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 0 bAlternateSetting 0 bNumEndpoints 2 bInterfaceClass 8 Mass Storage bInterfaceSubClass 6 SCSI bInterfaceProtocol 80 Bulk (Zip) iInterface 0 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x02 EP 2 OUT bmAttributes 2 Transfer Type Bulk Synch Type None Usage Type Data wMaxPacketSize 0x0200 1x 512 bytes bInterval 0 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x81 EP 1 IN bmAttributes 2 Transfer Type Bulk Synch Type None Usage Type Data wMaxPacketSize 0x0200 1x 512 bytes bInterval 0 Device Status: 0x0000 # ./flashbench -a /dev/sdd --blocksize=1024 align 4294967296 pre 868µs on 1.16ms post 866µs diff 290µs align 2147483648 pre 870µs on 1.28ms post 864µs diff 413µs align 1073741824 pre 865µs on 1.12ms post 864µs diff 252µs align 536870912 pre 855µs on 1.11ms post 866µs diff 253µs align 268435456 pre 863µs on 999µs post 854µs diff 140µs align 134217728 pre 866µs on 1.1ms post 863µs diff 233µs align 67108864 pre 858µs on 1.11ms post 865µs diff 254µs align 33554432 pre 866µs on 996µs post 867µs diff 129µs align 16777216 pre 868µs on 1.12ms post 867µs diff 252µs align 8388608 pre 867µs on 1.12ms post 865µs diff 253µs align 4194304 pre 819µs on 872µs post 865µs diff 29.9µs align 2097152 pre 837µs on 872µs post 862µs diff 23µs align 1048576 pre 852µs on 871µs post 870µs diff 9.95µs align 524288 pre 857µs on 870µs post 859µs diff 12.2µs align 262144 pre 842µs on 870µs post 866µs diff 15.7µs align 131072 pre 848µs on 867µs post 870µs diff 7.85µs align 65536 pre 852µs on 870µs post 859µs diff 14.6µs align 32768 pre 864µs on 866µs post 865µs diff 1.15µs align 16384 pre 861µs on 870µs post 867µs diff 5.94µs align 8192 pre 860µs on 989µs post 864µs diff 127µs align 4096 pre 868µs on 968µs post 865µs diff 101µs align 2048 pre 865µs on 869µs post 860µs diff 6.97µs # ./flashbench -a /dev/sdd --blocksize=$[256 * 1024] align 4294967296 pre 7.83ms on 8.15ms post 7.73ms diff 373µs align 2147483648 pre 7.84ms on 8.19ms post 7.77ms diff 388µs align 1073741824 pre 7.68ms on 7.87ms post 7.67ms diff 194µs align 536870912 pre 7.72ms on 7.97ms post 7.66ms diff 277µs align 268435456 pre 7.74ms on 7.95ms post 7.68ms diff 240µs align 134217728 pre 7.78ms on 7.99ms post 7.69ms diff 256µs align 67108864 pre 7.81ms on 7.99ms post 7.74ms diff 211µs align 33554432 pre 7.79ms on 7.99ms post 7.64ms diff 271µs align 16777216 pre 7.82ms on 7.98ms post 7.69ms diff 227µs align 8388608 pre 7.78ms on 7.99ms post 7.66ms diff 274µs align 4194304 pre 7.78ms on 7.75ms post 7.76ms diff -22205n align 2097152 pre 7.84ms on 7.84ms post 7.87ms diff -10279n align 1048576 pre 7.76ms on 7.76ms post 7.74ms diff 10.1µs align 524288 pre 7.75ms on 7.76ms post 7.76ms diff 3.1µs # ./flashbench -a /dev/sdd --blocksize=$[512 * 1024] align 4294967296 pre 14.7ms on 15ms post 14.7ms diff 268µs align 2147483648 pre 14.4ms on 14.8ms post 14.4ms diff 417µs align 1073741824 pre 14.5ms on 14.7ms post 14.4ms diff 235µs align 536870912 pre 14.4ms on 14.6ms post 14.4ms diff 229µs align 268435456 pre 14.5ms on 14.8ms post 14.4ms diff 371µs align 134217728 pre 14.5ms on 14.7ms post 14.5ms diff 186µs align 67108864 pre 14.5ms on 14.7ms post 14.5ms diff 247µs align 33554432 pre 14.5ms on 14.7ms post 14.5ms diff 199µs align 16777216 pre 14.5ms on 14.6ms post 14.4ms diff 140µs align 8388608 pre 14.5ms on 14.7ms post 14.5ms diff 221µs align 4194304 pre 14.5ms on 14.5ms post 14.5ms diff -25738n align 2097152 pre 14.6ms on 14.6ms post 14.5ms diff 12.9µs align 1048576 pre 14.6ms on 14.6ms post 14.5ms diff 30.9µs # ./flashbench -a /dev/sdd --blocksize=$[1024 * 1024] align 4294967296 pre 27.9ms on 28.5ms post 28.4ms diff 340µs align 2147483648 pre 28.1ms on 28.4ms post 28.1ms diff 295µs align 1073741824 pre 28ms on 28.3ms post 28ms diff 244µs align 536870912 pre 28.1ms on 28.3ms post 28.2ms diff 199µs align 268435456 pre 28.4ms on 28.5ms post 28.2ms diff 233µs align 134217728 pre 28.3ms on 28.3ms post 27.9ms diff 228µs align 67108864 pre 28.1ms on 28.4ms post 28.1ms diff 289µs align 33554432 pre 28.2ms on 28.4ms post 28ms diff 240µs align 16777216 pre 28.2ms on 28.4ms post 28.1ms diff 232µs align 8388608 pre 28.1ms on 28.3ms post 28.1ms diff 264µs align 4194304 pre 28ms on 28.2ms post 28.2ms diff 159µs align 2097152 pre 28ms on 28ms post 28.1ms diff -10985n # ./flashbench --open-au --open-au-nr=2 --erasesize=$[4 * 1024 * 1024] /dev/sdd --blocksize=$[256 * 1024] 4MiB 22M/s 2MiB 5.91M/s 1MiB 21.5M/s 512KiB 5.88M/s 256KiB 20.9M/s # ./flashbench --open-au --open-au-nr=2 --erasesize=$[8 * 1024 * 1024] /dev/sdd --blocksize=$[256 * 1024] 8MiB 21.3M/s 4MiB 21.1M/s 2MiB 21M/s 1MiB 20.9M/s 512KiB 20.7M/s 256KiB 20.2M/s # ./flashbench --open-au --open-au-nr=4 --erasesize=$[8 * 1024 * 1024] /dev/sdd --blocksize=$[256 * 1024] 8MiB 21.3M/s 4MiB 21.1M/s 2MiB 21.1M/s 1MiB 20.9M/s 512KiB 20.7M/s 256KiB 20.2M/s # ./flashbench --open-au --open-au-nr=5 --erasesize=$[8 * 1024 * 1024] /dev/sdd --blocksize=$[256 * 1024] 8MiB 21.2M/s 4MiB 16.7M/s 2MiB 15.2M/s 1MiB 14.5M/s 512KiB 14.1M/s 256KiB 13.7M/s # ./flashbench --open-au --open-au-nr=6 --erasesize=$[8 * 1024 * 1024] /dev/sdd --blocksize=$[256 * 1024] 8MiB 21.3M/s 4MiB 14.8M/s 2MiB 12.8M/s 1MiB 12M/s 512KiB 11.6M/s 256KiB 11.2M/s # ./flashbench --open-au --open-au-nr=2 --erasesize=$[16 * 1024 * 1024] /dev/sdd --blocksize=$[256 * 1024] 16MiB 21.5M/s 8MiB 21.3M/s 4MiB 21.3M/s 2MiB 21.2M/s 1MiB 21.1M/s 512KiB 20.8M/s 256KiB 20.3M/s # ./flashbench --open-au --open-au-nr=3 --erasesize=$[16 * 1024 * 1024] /dev/sdd --blocksize=$[256 * 1024] 16MiB 21.5M/s 8MiB 21.3M/s 4MiB 21.2M/s 2MiB 21.1M/s 1MiB 21.2M/s 512KiB 21.2M/s 256KiB 20.6M/s # ./flashbench --open-au --open-au-nr=4 --erasesize=$[16 * 1024 * 1024] /dev/sdd --blocksize=$[256 * 1024] 16MiB 21.7M/s 8MiB 21.5M/s 4MiB 21.5M/s 2MiB 21.3M/s 1MiB 21.2M/s 512KiB 21M/s 256KiB 20.4M/s # ./flashbench --open-au --open-au-nr=5 --erasesize=$[16 * 1024 * 1024] /dev/sdd --blocksize=$[256 * 1024] 16MiB 21.4M/s 8MiB 21.3M/s 4MiB 16.9M/s 2MiB 15.3M/s 1MiB 14.6M/s 512KiB 14.1M/s 256KiB 13.7M/s # ./flashbench --open-au --open-au-nr=6 --erasesize=$[16 * 1024 * 1024] /dev/sdd --blocksize=$[256 * 1024] 16MiB 21.3M/s 8MiB 21.2M/s 4MiB 14.8M/s 2MiB 12.8M/s 1MiB 12M/s 512KiB 9.32M/s 256KiB 11.2M/s # ./flashbench --open-au --open-au-nr=4 --erasesize=$[8 * 1024 * 1024] /dev/sdd --random 8MiB 21.2M/s 4MiB 21.4M/s 2MiB 12.8M/s 1MiB 8.06M/s 512KiB 6.77M/s 256KiB 6.01M/s 128KiB 5.92M/s 64KiB 5.58M/s 32KiB 3.15M/s 16KiB 2.64M/s # ./flashbench --open-au --open-au-nr=5 --erasesize=$[8 * 1024 * 1024] /dev/sdd --random 8MiB 21.3M/s 4MiB 17M/s 2MiB 11.1M/s 1MiB 7.7M/s 512KiB 5.67M/s 256KiB 6.19M/s 128KiB 5.13M/s 64KiB 5.69M/s 32KiB 3.19M/s 16KiB 2.2M/s Can you guide me with what I should test next? -- mit freundlichen Grüssen, Michael Monnerie, Ing. BSc it-management Internet Services: Protéger http://proteger.at [gesprochen: Prot-e-schee] Tel: +43 660 / 415 6531 // ****** Radiointerview zum Thema Spam ****** // http://www.it-podcast.at/archiv.html#podcast-100716 // // Haus zu verkaufen: http://zmi.at/langegg/

14 years, 6 months

2
5
0 0

2025

2024

2023

2022

2021

2020

2019

2018

2017

2016

2015

2014

2013

2012

2011

Flashbench-results