- Flashbench-results - lists.linaro.org

flashbench result for SanDisk 31166976 KB SDHC Class4 MMC card

by Amit Pundir

$ sudo ./flashbench -a /dev/mmcblk0 --blocksize=$[4 * 1024] align 8589934592 pre 4.43ms on 4.48ms post 3.9ms diff 320µs align 4294967296 pre 4.56ms on 4.62ms post 4.01ms diff 332µs align 2147483648 pre 4.21ms on 4.45ms post 3.87ms diff 405µs align 1073741824 pre 4.56ms on 4.59ms post 3.97ms diff 327µs align 536870912 pre 4.54ms on 4.5ms post 3.86ms diff 303µs align 268435456 pre 4.49ms on 4.56ms post 3.95ms diff 333µs align 134217728 pre 4.17ms on 4.48ms post 3.87ms diff 459µs align 67108864 pre 4.58ms on 4.61ms post 3.93ms diff 357µs align 33554432 pre 4.02ms on 4.22ms post 3.5ms diff 464µs align 16777216 pre 4.16ms on 4.22ms post 3.55ms diff 367µs align 8388608 pre 4.25ms on 4.2ms post 3.47ms diff 345µs align 4194304 pre 4.16ms on 4.25ms post 3.51ms diff 411µs align 2097152 pre 4.27ms on 4.24ms post 3.54ms diff 340µs align 1048576 pre 4.21ms on 4.32ms post 3.56ms diff 430µs align 524288 pre 4.18ms on 4.26ms post 3.49ms diff 427µs align 262144 pre 3.54ms on 3.58ms post 3.56ms diff 32.1µs align 131072 pre 3.62ms on 3.61ms post 3.54ms diff 29.9µs align 65536 pre 3.44ms on 3.63ms post 3.53ms diff 146µs align 32768 pre 3.55ms on 3.57ms post 3.5ms diff 48µs align 16384 pre 3.44ms on 3.62ms post 3.59ms diff 102µs align 8192 pre 3.62ms on 3.57ms post 3.52ms diff 4.96µs Erase Block size found to be 512KB which is kind of surprising because possibility of a 512KB erase block size is not there in your LWN article. Anyways moving on.. $ sudo ./flashbench -O --erasesize=$[512 * 1024] --blocksize=$[4 * 1024] /dev/mmcblk0 --open-au --random 512KiB 6.14M/s 256KiB 6.39M/s 128KiB 6.3M/s 64KiB 6.16M/s 32KiB 5.75M/s 16KiB 4.64M/s 8KiB 3.39M/s 4KiB 2.23M/s $ sudo ./flashbench -O --erasesize=$[512 * 1024] --blocksize=$[4 * 1024] /dev/mmcblk0 --open-au 512KiB 6.14M/s 256KiB 6.36M/s 128KiB 6.25M/s 64KiB 6.14M/s 32KiB 3.79M/s 16KiB 3.45M/s 8KiB 3.44M/s 4KiB 2.28M/s $ sudo ./flashbench -O --erasesize=$[512 * 1024] --blocksize=$[4 * 1024] /dev/mmcblk0 --open-au-nr=1 --random 512KiB 5.68M/s 256KiB 6.22M/s 128KiB 6.33M/s 64KiB 6.29M/s 32KiB 5.93M/s 16KiB 4.9M/s 8KiB 3.3M/s 4KiB 2.19M/s $ sudo ./flashbench -O --erasesize=$[512 * 1024] --blocksize=$[4 * 1024] /dev/mmcblk0 --open-au-nr=1 512KiB 6.06M/s 256KiB 6.4M/s 128KiB 6.34M/s 64KiB 6.35M/s 32KiB 4.05M/s 16KiB 4.25M/s 8KiB 5.18M/s 4KiB 3.92M/s Got consistent numbers till open erase block = 17 but beyond that also numbers are not that bad as well. $ sudo ./flashbench -O --erasesize=$[512 * 1024] --blocksize=$[4 * 1024] /dev/mmcblk0 --open-au-nr=17 --random 512KiB 5.95M/s 256KiB 5.14M/s 128KiB 4.64M/s 64KiB 5.83M/s 32KiB 5.76M/s 16KiB 4.64M/s 8KiB 2.92M/s 4KiB 2.23M/s $ sudo ./flashbench -O --erasesize=$[512 * 1024] --blocksize=$[4 * 1024] /dev/mmcblk0 --open-au-nr=17 512KiB 6.38M/s 256KiB 6.04M/s 128KiB 6.17M/s 64KiB 5.22M/s 32KiB 4.4M/s 16KiB 4.51M/s 8KiB 2.77M/s 4KiB 2.13M/s $ sudo ./flashbench -O --erasesize=$[512 * 1024] --blocksize=$[4 * 1024] /dev/mmcblk0 --open-au-nr=18 --random 512KiB 4.27M/s 256KiB 4.54M/s 128KiB 4.12M/s 64KiB 4.53M/s 32KiB 4.36M/s 16KiB 2.71M/s 8KiB 1.35M/s 4KiB 1.5M/s $ sudo ./flashbench -O --erasesize=$[512 * 1024] --blocksize=$[4 * 1024] /dev/mmcblk0 --open-au-nr=18 512KiB 6.34M/s 256KiB 5.22M/s 128KiB 5.37M/s 64KiB 4.88M/s 32KiB 5.16M/s 16KiB 3.79M/s 8KiB 3.05M/s 4KiB 2.14M/s

15 years

2
3
0 0

flashbench result for Transcend Micro SD card adapter and unknown class 3941376 KB micro SD card

by Amit Pundir

manfid = 0x000074 oemid = 0x4a45 $ sudo ./flashbench -a /dev/mmcblk0 --blocksize=$[4 * 1024] align 1073741824 pre 1.81ms on 2.11ms post 1.83ms diff 292µs align 536870912 pre 1.75ms on 2.15ms post 1.81ms diff 367µs align 268435456 pre 1.85ms on 2.05ms post 1.82ms diff 214µs align 134217728 pre 1.84ms on 2.04ms post 1.81ms diff 217µs align 67108864 pre 1.77ms on 2.06ms post 1.82ms diff 263µs align 33554432 pre 1.83ms on 2.04ms post 1.81ms diff 223µs align 16777216 pre 1.8ms on 2.07ms post 1.81ms diff 266µs align 8388608 pre 1.79ms on 2.06ms post 1.83ms diff 253µs align 4194304 pre 1.79ms on 2.08ms post 1.83ms diff 270µs align 2097152 pre 1.75ms on 2.06ms post 1.82ms diff 275µs align 1048576 pre 1.84ms on 2.06ms post 1.83ms diff 232µs align 524288 pre 1.93ms on 1.99ms post 1.85ms diff 104µs align 262144 pre 1.9ms on 1.99ms post 1.83ms diff 123µs align 131072 pre 1.93ms on 1.99ms post 1.85ms diff 102µs align 65536 pre 1.9ms on 1.99ms post 1.83ms diff 128µs align 32768 pre 1.9ms on 1.98ms post 1.82ms diff 125µs align 16384 pre 1.87ms on 1.96ms post 1.77ms diff 140µs align 8192 pre 1.72ms on 1.96ms post 1.96ms diff 121µs >From here I can figure out that Erase Block size for this card is 1MB. $ sudo ./flashbench -O --erasesize=$[1 * 1024 * 1024] --blocksize=$[4 * 1024] /dev/mmcblk0 --open-au --random 1MiB 2.42M/s 512KiB 11.6M/s 256KiB 10.6M/s 128KiB 10.2M/s 64KiB 7.8M/s 32KiB 6.81M/s 16KiB 4.51M/s 8KiB 2.05M/s 4KiB 958K/s $ sudo ./flashbench -O --erasesize=$[1 * 1024 * 1024] --blocksize=$[4 * 1024] /dev/mmcblk0 --open-au 1MiB 12M/s 512KiB 11.4M/s 256KiB 10.6M/s 128KiB 9.99M/s 64KiB 7.87M/s 32KiB 6.75M/s 16KiB 4.57M/s 8KiB 2.21M/s 4KiB 1M/s $ sudo ./flashbench -O --erasesize=$[1 * 1024 * 1024] --blocksize=$[4 * 1024] /dev/mmcblk0 --open-au-nr=1 --random 1MiB 11.8M/s 512KiB 10.1M/s 256KiB 10.4M/s 128KiB 10.1M/s 64KiB 8.2M/s 32KiB 6.41M/s 16KiB 4.87M/s 8KiB 2.12M/s 4KiB 1.01M/s $ sudo ./flashbench -O --erasesize=$[1 * 1024 * 1024] --blocksize=$[4 * 1024] /dev/mmcblk0 --open-au-nr=1 1MiB 11.1M/s 512KiB 11M/s 256KiB 11.8M/s 128KiB 10.3M/s 64KiB 11.7M/s 32KiB 10.8M/s 16KiB 10.9M/s 8KiB 7.77M/s 4KiB 6.98M/s Till 5 open erase blocks I'm getting consistent not so bad performance but for 6 open erase blocks there is a very sharp decrease in performance numbers. $ sudo ./flashbench -O --erasesize=$[1 * 1024 * 1024] --blocksize=$[4 * 1024] /dev/mmcblk0 --open-au-nr=5 --random 1MiB 4.55M/s 512KiB 11.1M/s 256KiB 10.5M/s 128KiB 9.85M/s 64KiB 8.02M/s 32KiB 6.27M/s 16KiB 4.52M/s 8KiB 2.03M/s 4KiB 956K/s $ sudo ./flashbench -O --erasesize=$[1 * 1024 * 1024] --blocksize=$[4 * 1024] /dev/mmcblk0 --open-au-nr=5 1MiB 11.9M/s 512KiB 11.4M/s 256KiB 11M/s 128KiB 9.61M/s 64KiB 8.3M/s 32KiB 5.89M/s 16KiB 4.61M/s 8KiB 2.28M/s 4KiB 1.25M/s $ sudo ./flashbench -O --erasesize=$[1 * 1024 * 1024] --blocksize=$[4 * 1024] /dev/mmcblk0 --open-au-nr=6 --random 1MiB 2.42M/s 512KiB 1.61M/s 256KiB 756K/s 128KiB 413K/s 64KiB 217K/s 32KiB 111K/s 16KiB 56.3K/s 8KiB 28.2K/s 4KiB 14K/s $ sudo ./flashbench -O --erasesize=$[1 * 1024 * 1024] --blocksize=$[4 * 1024] /dev/mmcblk0 --open-au-nr=6 1MiB 2.41M/s 512KiB 1.62M/s 256KiB 755K/s 128KiB 413K/s 64KiB 217K/s 32KiB 110K/s 16KiB 56.1K/s 8KiB 28K/s 4KiB 14K/s

15 years

2
4
0 0

flashbench results for SanDisk 7761920 KB SDHC Class 2 MMC card

by Amit Pundir

manfid = 0x000003 and, oemid = 0x5344 $ sudo ./flashbench -a /dev/mmcblk0 --blocksize=$[4 * 1024] align 2147483648 pre 3.47ms on 3.74ms post 2.81ms diff 601µs align 1073741824 pre 3.84ms on 3.99ms post 3.15ms diff 494µs align 536870912 pre 3.95ms on 4.05ms post 3.46ms diff 349µs align 268435456 pre 3.42ms on 3.68ms post 3.2ms diff 372µs align 134217728 pre 2.86ms on 3.13ms post 2.72ms diff 341µs align 67108864 pre 2.93ms on 3.35ms post 2.84ms diff 458µs align 33554432 pre 3.9ms on 4.34ms post 3.82ms diff 479µs align 16777216 pre 2.96ms on 3.23ms post 2.26ms diff 624µs align 8388608 pre 2.06ms on 2.66ms post 2.22ms diff 519µs align 4194304 pre 2.98ms on 3.31ms post 2.23ms diff 699µs align 2097152 pre 4.21ms on 4.5ms post 3.86ms diff 461µs align 1048576 pre 4.38ms on 4.63ms post 3.95ms diff 467µs align 524288 pre 3.03ms on 3.22ms post 2.85ms diff 280µs align 262144 pre 2.76ms on 2.98ms post 2.45ms diff 371µs align 131072 pre 2.47ms on 2.7ms post 2.48ms diff 228µs align 65536 pre 2.58ms on 2.97ms post 2.46ms diff 451µs align 32768 pre 2.48ms on 2.69ms post 2.5ms diff 194µs align 16384 pre 3.09ms on 3.28ms post 2.7ms diff 383µs align 8192 pre 2.78ms on 3.01ms post 2.76ms diff 238µs Erase Block size assumed to be 4MB. $ sudo ./flashbench -O --erasesize=$[4 * 1024 * 1024] --blocksize=$[4 * 1024] /dev/mmcblk0 --open-au --random 4MiB 4.51M/s 2MiB 4.15M/s 1MiB 3.58M/s 512KiB 3.25M/s 256KiB 4.01M/s 128KiB 3.46M/s 64KiB 3.43M/s 32KiB 2.95M/s 16KiB 2.97M/s 8KiB 2.19M/s 4KiB 1.56M/s $ sudo ./flashbench -O --erasesize=$[4 * 1024 * 1024] --blocksize=$[4 * 1024] /dev/mmcblk0 --open-au 4MiB 4.11M/s 2MiB 3.01M/s 1MiB 2.95M/s 512KiB 2.72M/s 256KiB 2.52M/s 128KiB 2.57M/s 64KiB 3.36M/s 32KiB 2.68M/s 16KiB 2.3M/s 8KiB 1.8M/s 4KiB 1.51M/s $ sudo ./flashbench -O --erasesize=$[4 * 1024 * 1024] --blocksize=$[4 * 1024] /dev/mmcblk0 --open-au-nr=1 --random 4MiB 4.21M/s 2MiB 4.28M/s 1MiB 3.16M/s 512KiB 4.4M/s 256KiB 3.5M/s 128KiB 3.52M/s 64KiB 4.17M/s 32KiB 3.75M/s 16KiB 2.56M/s 8KiB 2.66M/s 4KiB 1.75M/s $ sudo ./flashbench -O --erasesize=$[4 * 1024 * 1024] --blocksize=$[4 * 1024] /dev/mmcblk0 --open-au-nr=1 4MiB 4.2M/s 2MiB 3.84M/s 1MiB 4.34M/s 512KiB 4.36M/s 256KiB 3.53M/s 128KiB 3.8M/s 64KiB 4.32M/s 32KiB 3.85M/s 16KiB 3.78M/s 8KiB 3.34M/s 4KiB 2.95M/s It gave me a consistent throughput as long as upto 7 erase blocks were open. Performance with 8 open erase blocks is not that bad either. $ sudo ./flashbench -O --erasesize=$[4 * 1024 * 1024] --blocksize=$[4 * 1024] /dev/mmcblk0 --open-au-nr=7 --random 4MiB 3.73M/s 2MiB 3.02M/s 1MiB 3.14M/s 512KiB 2.88M/s 256KiB 2.48M/s 128KiB 2.34M/s 64KiB 2.16M/s 32KiB 1.96M/s 16KiB 1.55M/s 8KiB 1.04M/s 4KiB 1.01M/s $ sudo ./flashbench -O --erasesize=$[4 * 1024 * 1024] --blocksize=$[4 * 1024] /dev/mmcblk0 --open-au-nr=7 4MiB 3.4M/s 2MiB 3.1M/s 1MiB 3.01M/s 512KiB 3.12M/s 256KiB 2.91M/s 128KiB 2.87M/s 64KiB 2.58M/s 32KiB 2.78M/s 16KiB 2.37M/s 8KiB 1.85M/s 4KiB 1.28M/s $ sudo ./flashbench -O --erasesize=$[4 * 1024 * 1024] --blocksize=$[4 * 1024] /dev/mmcblk0 --open-au-nr=8 --random 4MiB 3.66M/s 2MiB 2.94M/s 1MiB 3.04M/s 512KiB 2.55M/s 256KiB 2.46M/s 128KiB 2.27M/s 64KiB 1.96M/s 32KiB 1.53M/s 16KiB 1.38M/s 8KiB 955K/s 4KiB 823K/s $ sudo ./flashbench -O --erasesize=$[4 * 1024 * 1024] --blocksize=$[4 * 1024] /dev/mmcblk0 --open-au-nr=8 4MiB 3.36M/s 2MiB 2.69M/s 1MiB 2.66M/s 512KiB 2.56M/s 256KiB 2.41M/s 128KiB 2.4M/s 64KiB 2.14M/s 32KiB 2.04M/s 16KiB 2.01M/s 8KiB 1.65M/s 4KiB 1.2M/s

15 years

1
0
0 0

Mobile phone factory

by Picasa Web Albums

Dear friend, Good day! Our company is mainly in the OEM and ODM business with all kinds of mobile phone. If you need the detail requirement, please kindly contact us. Best wishes Juce Mobile: 86-13424432252 Tel: 86-0755-85282599 Fax: 86-0755-81752355 E-mail: elink(a)vip.188.com / sales(a)elink-mobile.com Web size: www.elink-mobile.com Factory Address: 5/F, Building 21, ChenTian Industrial Park, Shenzhen, GuangDong Province, China

15 years

1
0
0 0

OCZ RevoDrive 60 GB

by Arnd Bergmann

sudo fdisk -l /dev/sda Disk /dev/sda: 60.0 GB, 60022480896 bytes 255 heads, 63 sectors/track, 7297 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x00000000 sudo fdisk -l /dev/sda Disk /dev/sda: 60.0 GB, 60022480896 bytes 255 heads, 63 sectors/track, 7297 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x00000000 Disk /dev/sda doesn't contain a valid partition table arnd@ocdc-kvm:~/git/flashbench$ sudo hdparm -i /dev/sda /dev/sda: Model=OCZ-REVODRIVE, FwRev=1.20, SerialNo=OCZ-V8WN0QLPF80W8L99 Config={ Fixed } RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=4 BuffType=unknown, BuffSize=unknown, MaxMultSect=16, MultSect=1 CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=117231408 IORDY=on/off, tPIO={min:120,w/IORDY:120}, tDMA={min:120,rec:120} PIO modes: pio0 pio1 pio2 pio3 pio4 DMA modes: mdma0 mdma1 mdma2 UDMA modes: udma0 udma1 udma2 udma3 udma4 *udma5 udma6 AdvancedPM=no WriteCache=disabled Drive conforms to: unknown: ATA/ATAPI-2,3,4,5,6,7 * signifies the current active mode sudo hdparm -W0 /dev/sda /dev/sda: setting drive write-caching to 0 (off) write-caching = 0 (off) $ sudo ./flashbench -a /dev/sda --count=100 align 8589934592 pre 108µs on 124µs post 90.8µs diff 25µs align 4294967296 pre 102µs on 108µs post 91.1µs diff 11.5µs align 2147483648 pre 108µs on 127µs post 91.4µs diff 27.2µs align 1073741824 pre 113µs on 132µs post 91.1µs diff 30.3µs align 536870912 pre 114µs on 134µs post 92.5µs diff 30.9µs align 268435456 pre 123µs on 144µs post 90.9µs diff 37.5µs align 134217728 pre 100µs on 117µs post 91.7µs diff 20.8µs align 67108864 pre 117µs on 140µs post 105µs diff 29.4µs align 33554432 pre 116µs on 136µs post 91.3µs diff 32.4µs align 16777216 pre 109µs on 129µs post 92.6µs diff 28µs align 8388608 pre 120µs on 144µs post 90.8µs diff 38.2µs align 4194304 pre 91.5µs on 91.6µs post 91.1µs diff 244ns align 2097152 pre 91.1µs on 91µs post 91µs diff -56ns align 1048576 pre 91.2µs on 91µs post 91.3µs diff -186ns align 524288 pre 91µs on 90.9µs post 91.1µs diff -132ns align 262144 pre 91.5µs on 91.2µs post 91.4µs diff -288ns align 131072 pre 91.4µs on 91.3µs post 91.3µs diff -92ns align 65536 pre 91.4µs on 91µs post 91.3µs diff -345ns align 32768 pre 90.9µs on 91.2µs post 91.3µs diff 142ns time sudo ./flashbench --erasesize=8388608 /dev/sda --blocksize=4096 -p [sudo] password for arnd: 2MiB 209M/s 236M/s 103M/s 198M/s 234M/s 234M/s 101M/s 195M/s 1MiB 228M/s 230M/s 103M/s 194M/s 228M/s 231M/s 96.7M/s 200M/s 512KiB 216M/s 224M/s 105M/s 180M/s 220M/s 226M/s 86.2M/s 190M/s 256KiB 203M/s 210M/s 114M/s 174M/s 200M/s 207M/s 120M/s 175M/s 128KiB 178M/s 189M/s 129M/s 153M/s 182M/s 183M/s 128M/s 157M/s 64KiB 152M/s 156M/s 141M/s 145M/s 187M/s 195M/s 129M/s 133M/s 32KiB 162M/s 177M/s 142M/s 118M/s 173M/s 182M/s 135M/s 108M/s 16KiB 140M/s 143M/s 134M/s 88.1M/s 139M/s 143M/s 135M/s 86.2M/s 8KiB 96.2M/s 98M/s 96M/s 68.3M/s 97.8M/s 98.7M/s 95.7M/s 64M/s 4KiB 63.2M/s 60M/s 60.1M/s 41.6M/s 62.8M/s 61.1M/s 60.1M/s 41.6M/s 2KiB 20.3M/s 25M/s 24.8M/s 25.4M/s 14.3M/s 19.1M/s 14.8M/s 20.3M/s 1KiB 12.6M/s 13.8M/s 13.9M/s 15.7M/s 8.05M/s 10.4M/s 8.08M/s 11.5M/s 512B 7.07M/s 7.32M/s 7.32M/s 7.86M/s 4.32M/s 5.44M/s 4.21M/s 5.93M/s $ sudo ./flashbench --open-au --erasesize=8388608 /dev/sda --blocksize=512 --open-au-nr=1 8MiB 103M/s 4MiB 77.5M/s 2MiB 106M/s 1MiB 106M/s 512KiB 106M/s 256KiB 88.6M/s 128KiB 99.6M/s 64KiB 102M/s 32KiB 90M/s 16KiB 88.8M/s 8KiB 88.9M/s 4KiB 58.3M/s 2KiB 16.5M/s 1KiB 11.8M/s 512B 6.72M/s arnd@ocdc-kvm:~/git/flashbench$ sudo ./flashbench --open-au --erasesize=8388608 /dev/sda --blocksize=512 --open-au-nr=1 --offset=$[63 * 512] 8MiB 100M/s 4MiB 103M/s 2MiB 103M/s 1MiB 73.9M/s 512KiB 96.6M/s 256KiB 85.6M/s 128KiB 69.6M/s 64KiB 59.9M/s 32KiB 36.1M/s 16KiB 37.3M/s 8KiB 18.2M/s 4KiB 15.8M/s 2KiB 14.3M/s 1KiB 10.4M/s 512B 5.85M/s arnd@ocdc-kvm:~/git/flashbench$ sudo ./flashbench --open-au --erasesize=8388608 /dev/sda --blocksize=512 --open-au-nr=1 --offset=4096 8MiB 102M/s 4MiB 106M/s 2MiB 87.4M/s 1MiB 92.6M/s 512KiB 104M/s 256KiB 99M/s 128KiB 88M/s 64KiB 90.7M/s 32KiB 92.9M/s 16KiB 96.3M/s 8KiB 79.9M/s 4KiB 53.1M/s 2KiB 14.7M/s 1KiB 10.9M/s 512B 6.17M/s arnd@ocdc-kvm:~/git/flashbench$ sudo ./flashbench --open-au --erasesize=$[1024 * 1024] /dev/sda --blocksize=2048 --open-au-nr=64 1MiB 99.1M/s 512KiB 102M/s 256KiB 97.2M/s 128KiB 98.4M/s 64KiB 94.5M/s 32KiB 87.1M/s 16KiB 91.2M/s 8KiB 80.8M/s 4KiB 54.7M/s 2KiB 10.6M/s arnd@ocdc-kvm:~/git/flashbench$ sudo ./flashbench --open-au --erasesize=$[1024 * 1024] /dev/sda --blocksize=2048 --random --open-au-nr=64 1MiB 102M/s 512KiB 97.5M/s 256KiB 96.3M/s 128KiB 95.8M/s 64KiB 89.2M/s 32KiB 89.6M/s 16KiB 83.7M/s 8KiB 82.8M/s 4KiB 53.8M/s 2KiB 11.3M/s arnd@ocdc-kvm:~/git/flashbench$ sudo ./flashbench --open-au --erasesize=$[1024 * 1024] /dev/sda --blocksize=2048 --random --open-au-nr=64 --offset=4096 1MiB 97.5M/s 512KiB 98.8M/s 256KiB 99.4M/s 128KiB 94.6M/s 64KiB 91.3M/s 32KiB 89.5M/s 16KiB 90.3M/s 8KiB 82.5M/s 4KiB 55.3M/s 2KiB 11.3M/s arnd@ocdc-kvm:~/git/flashbench$ sudo ./flashbench --open-au --erasesize=$[1024 * 1024] /dev/sda --blocksize=2048 --random --open-au-nr=64 --offset=2048 1MiB 92.2M/s 512KiB 91.2M/s 256KiB 78.7M/s 128KiB 69.1M/s 64KiB 44M/s 32KiB 32.5M/s 16KiB 23.8M/s 8KiB 15.8M/s 4KiB 10.9M/s 2KiB 11.2M/s

15 years

1
0
0 0

extrmemory 16 GB class 6 performance

by Arnd Bergmann

arnd@klappe2:~/git/flashbench$ sudo ./flashbench -a /dev/mmcblk0 --blocksize=1024 align 3221225472 pre 1.26ms on 1.59ms post 1.22ms diff 351Âµs align 2147483648 pre 1.41ms on 1.68ms post 1.27ms diff 338Âµs align 1610612736 pre 1.49ms on 1.67ms post 1.25ms diff 301Âµs align 1073741824 pre 1.37ms on 1.65ms post 1.25ms diff 344Âµs align 805306368 pre 1.27ms on 1.55ms post 1.17ms diff 334Âµs align 536870912 pre 1.16ms on 1.56ms post 1.16ms diff 403Âµs align 402653184 pre 1.23ms on 1.52ms post 1.11ms diff 354Âµs align 268435456 pre 1.09ms on 1.48ms post 1.08ms diff 389Âµs align 201326592 pre 1.16ms on 1.4ms post 1.09ms diff 282Âµs align 134217728 pre 1.3ms on 1.56ms post 1.09ms diff 362Âµs align 100663296 pre 1.33ms on 1.54ms post 1.08ms diff 340Âµs align 67108864 pre 1.2ms on 1.54ms post 1.09ms diff 399Âµs align 50331648 pre 1.27ms on 1.45ms post 1.1ms diff 270Âµs align 33554432 pre 1.21ms on 1.5ms post 1.1ms diff 340Âµs align 25165824 pre 1.27ms on 1.5ms post 1.13ms diff 297Âµs align 16777216 pre 1.15ms on 1.47ms post 1.12ms diff 338Âµs align 12582912 pre 1.3ms on 1.52ms post 1.14ms diff 302Âµs align 8388608 pre 1.3ms on 1.63ms post 1.13ms diff 416Âµs align 6291456 pre 1.32ms on 1.56ms post 1.21ms diff 295Âµs align 4194304 pre 1.21ms on 1.48ms post 1.16ms diff 299Âµs align 3145728 pre 1.17ms on 1.27ms post 1.17ms diff 99.4Âµs align 2097152 pre 1.25ms on 1.58ms post 1.13ms diff 388Âµs align 1572864 pre 1.25ms on 1.39ms post 1.26ms diff 139Âµs align 1048576 pre 1.24ms on 1.37ms post 1.24ms diff 134Âµs align 786432 pre 1.24ms on 1.37ms post 1.24ms diff 136Âµs align 524288 pre 1.24ms on 1.37ms post 1.24ms diff 127Âµs align 393216 pre 1.25ms on 1.37ms post 1.24ms diff 127Âµs align 262144 pre 1.24ms on 1.39ms post 1.25ms diff 140Âµs align 196608 pre 1.25ms on 1.37ms post 1.24ms diff 127Âµs align 131072 pre 1.26ms on 1.4ms post 1.26ms diff 134Âµs align 98304 pre 1.25ms on 1.4ms post 1.26ms diff 140Âµs align 65536 pre 1.27ms on 1.39ms post 1.26ms diff 128Âµs align 49152 pre 1.27ms on 1.39ms post 1.24ms diff 141Âµs align 32768 pre 1.25ms on 1.38ms post 1.24ms diff 135Âµs align 24576 pre 1.22ms on 1.26ms post 1.22ms diff 42.4Âµs align 16384 pre 1.23ms on 1.35ms post 1.22ms diff 130Âµs align 12288 pre 1.23ms on 1.29ms post 1.25ms diff 48.3Âµs align 8192 pre 1.22ms on 1.26ms post 1.22ms diff 42.2Âµs align 6144 pre 1.22ms on 1.26ms post 1.22ms diff 43.4Âµs align 4096 pre 1.22ms on 1.26ms post 1.22ms diff 43.9Âµs align 3072 pre 1.22ms on 1.22ms post 1.22ms diff -844ns align 2048 pre 1.22ms on 1.26ms post 1.22ms diff 42.5Âµs arnd@klappe2:~/git/flashbench$ head /sys/block/mmcblk0/device/* ==> /sys/block/mmcblk0/device/cid <== 275048534431364720e5000e12008b00 ==> /sys/block/mmcblk0/device/csd <== 400e00325b59000078377f800a400000 ==> /sys/block/mmcblk0/device/date <== 11/2008 ==> /sys/block/mmcblk0/device/erase_size <== 512 ==> /sys/block/mmcblk0/device/fwrev <== 0x0 ==> /sys/block/mmcblk0/device/hwrev <== 0x2 ==> /sys/block/mmcblk0/device/manfid <== 0x000027 ==> /sys/block/mmcblk0/device/name <== SD16G ==> /sys/block/mmcblk0/device/oemid <== 0x5048 ==> /sys/block/mmcblk0/device/preferred_erase_size <== 4194304 ==> /sys/block/mmcblk0/device/scr <== 0235000001000000 ==> /sys/block/mmcblk0/device/serial <== 0xe5000e12 ==> /sys/block/mmcblk0/device/type <== SD ==> /sys/block/mmcblk0/device/uevent <== DRIVER=mmcblk MMC_TYPE=SD MMC_NAME=SD16G MODALIAS=mmc:block arnd@klappe2:~/git/flashbench$ sudo fdisk -ul /dev/mmcblk0 Disk /dev/mmcblk0: 16.1 GB, 16135487488 bytes 64 heads, 32 sectors/track, 15388 cylinders, total 31514624 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: 0x0008041b Device Boot Start End Blocks Id System /dev/mmcblk0p1 * 32 31514623 15757296 c W95 FAT32 (LBA) arnd@klappe2:~/git/flashbench$ sudo ./flashbench --erasesize=$[4194304/2] --blocksize=8192 /dev/mmcblk0 --random --findfat --fat-nr=6 2MiB 2.69M/s 2.75M/s 2.66M/s 2.78M/s 10.5M/s 10.4M/s 1MiB 2.77M/s 2.79M/s 2.71M/s 2.69M/s 7.87M/s 5.76M/s 512KiB 2.66M/s 2.78M/s 2.74M/s 2.75M/s 4.06M/s 4.16M/s 256KiB 2.76M/s 2.76M/s 2.75M/s 2.69M/s 3.88M/s 3.88M/s 128KiB 2.71M/s 2.7M/s 2.8M/s 2.77M/s 3.78M/s 3.61M/s 64KiB 2.77M/s 2.81M/s 2.74M/s 2.7M/s 2.68M/s 2.68M/s 32KiB 2.25M/s 2.28M/s 2.22M/s 2.26M/s 3.12M/s 3.08M/s 16KiB 1.76M/s 1.8M/s 1.77M/s 1.77M/s 1.93M/s 1.95M/s 8KiB 1.05M/s 985K/s 925K/s 1.01M/s 1.02M/s 1.06M/s arnd@klappe2:~/git/flashbench$ sudo ./flashbench --erasesize=$[4194304/2] --blocksize=512 /dev/mmcblk0 --findfat --fat-nr=6 2MiB 3.87M/s 2.82M/s 2.78M/s 2.74M/s 3.96M/s 3.95M/s 1MiB 2.77M/s 2.7M/s 2.72M/s 2.73M/s 4.16M/s 4.14M/s 512KiB 2.77M/s 2.76M/s 2.17M/s 2.77M/s 3.92M/s 3.93M/s 256KiB 2.75M/s 2.72M/s 2.74M/s 2.75M/s 10.2M/s 10.2M/s 128KiB 2.72M/s 2.77M/s 2.75M/s 2.74M/s 10.6M/s 10.5M/s 64KiB 2.74M/s 2.77M/s 2.77M/s 2.75M/s 10.5M/s 10.5M/s 32KiB 2.29M/s 2.27M/s 2.27M/s 2.27M/s 8.75M/s 8.75M/s 16KiB 1.78M/s 1.79M/s 1.81M/s 1.77M/s 6.48M/s 6.46M/s 8KiB 970K/s 992K/s 986K/s 989K/s 1.53M/s 1.59M/s 4KiB 524K/s 521K/s 519K/s 510K/s 627K/s 647K/s 2KiB 263K/s 268K/s 263K/s 269K/s 318K/s 302K/s arnd@klappe2:~/git/flashbench$ sudo ./flashbench --erasesize=$[4194304] --blocksize=8192 /dev/mmcblk0 --open-au --open-au-nr=3 4MiB 7.2M/s 2MiB 8.34M/s 1MiB 9.02M/s 512KiB 10.5M/s 256KiB 10.3M/s 128KiB 10.5M/s 64KiB 10.3M/s 32KiB 8.72M/s 16KiB 6.48M/s 8KiB 1.35M/s arnd@klappe2:~/git/flashbench$ sudo ./flashbench --erasesize=$[4194304] --blocksize=8192 /dev/mmcblk0 --open-au --open-au-nr=4 4MiB 9.26M/s 2MiB 10.3M/s 1MiB 4.99M/s 512KiB 2.62M/s ^C arnd@klappe2:~/git/flashbench$ sudo ./flashbench --erasesize=$[4194304/2] --blocksize=8192 /dev/mmcblk0 --open-au --open-au-nr=3 2MiB 5.01M/s 1MiB 3.91M/s 512KiB 3.96M/s 256KiB 5.81M/s 128KiB 4.03M/s 64KiB 4.97M/s 32KiB 3.92M/s 16KiB 3.06M/s 8KiB 1.4M/s arnd@klappe2:~/git/flashbench$ sudo ./flashbench --erasesize=$[4194304] --blocksize=8192 /dev/mmcblk0 --open-au --open-au-nr=3 --random 4MiB 8.31M/s 2MiB 7.12M/s 1MiB 4.97M/s 512KiB 2.89M/s 256KiB 1.74M/s 128KiB 1.14M/s 64KiB 585K/s 32KiB 299K/s arnd@klappe2:~/git/flashbench$ sudo ./flashbench --erasesize=$[4194304] --blocksize=8192 /dev/mmcblk0 --open-au --open-au-nr=1 --random 4MiB 6.39M/s 2MiB 4.83M/s 1MiB 4.02M/s 512KiB 4.67M/s 256KiB 4.47M/s 128KiB 3.43M/s 64KiB 3.45M/s 32KiB 2.93M/s 16KiB 2.12M/s 8KiB 1.02M/s arnd@klappe2:~/git/flashbench$ sudo ./flashbench --erasesize=$[4194304] --blocksize=8192 /dev/mmcblk0 --open-au --open-au-nr=2 --random 4MiB 7.91M/s 2MiB 5.77M/s 1MiB 4.62M/s 512KiB 3.03M/s 256KiB 1.85M/s 128KiB 1.2M/s 64KiB 598K/s 32KiB 305K/s arnd@klappe2:~/git/flashbench$ sudo ./flashbench --erasesize=$[4194304 / 2] --blocksize=8192 /dev/mmcblk0 --open-au --open-au-nr=2 --random 2MiB 5.97M/s 1MiB 4.54M/s 512KiB 3.52M/s 256KiB 3.98M/s 128KiB 3.3M/s 64KiB 3.61M/s 32KiB 2.72M/s 16KiB 2.08M/s 8KiB 1.03M/s

15 years

1
0
0 0

16 GB extrememory HyPerformance (2009)

by Arnd Bergmann

==> /sys/block/mmcblk0/device/cid <== 1d41445344202020102810091d009c00 ==> /sys/block/mmcblk0/device/csd <== 400e00325b5900007b7d7f800a400000 ==> /sys/block/mmcblk0/device/date <== 12/2009 ==> /sys/block/mmcblk0/device/erase_size <== 512 ==> /sys/block/mmcblk0/device/fwrev <== 0x0 ==> /sys/block/mmcblk0/device/hwrev <== 0x1 ==> /sys/block/mmcblk0/device/manfid <== 0x00001d ==> /sys/block/mmcblk0/device/name <== SD ==> /sys/block/mmcblk0/device/oemid <== 0x4144 ==> /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 <== 0235800000000000 ==> /sys/block/mmcblk0/device/serial <== 0x2810091d ==> /sys/block/mmcblk0/device/subsystem <== head: error reading `/sys/block/mmcblk0/device/subsystem': Is a directory ==> /sys/block/mmcblk0/device/type <== SD Disk /dev/mmcblk0: 16.6 GB, 16574840832 bytes 4 heads, 16 sectors/track, 505824 cylinders, total 32372736 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: 0x00092313 Device Boot Start End Blocks Id System /dev/mmcblk0p1 8192 1023999 507904 82 Linux swap / Solaris Partition 1 does not end on cylinder boundary. /dev/mmcblk0p2 1024000 31342591 15159296 83 Linux Partition 2 does not end on cylinder boundary. arnd@klappe2:~/git/flashbench$ sudo ./flashbench -a /dev/mmcblk0 --blocksize=1024 align 3221225472 pre 1.09ms on 1.45ms post 1.07ms diff 373Âµs align 2147483648 pre 1.1ms on 1.48ms post 1.08ms diff 389Âµs align 1610612736 pre 1.03ms on 1.31ms post 1.08ms diff 255Âµs align 1073741824 pre 1.1ms on 1.51ms post 1.08ms diff 411Âµs align 805306368 pre 1.04ms on 1.31ms post 1.08ms diff 245Âµs align 536870912 pre 1.01ms on 1.3ms post 1.07ms diff 259Âµs align 402653184 pre 1.01ms on 1.36ms post 1.06ms diff 326Âµs align 268435456 pre 994Âµs on 1.36ms post 1.08ms diff 329Âµs align 201326592 pre 973Âµs on 1.35ms post 1.06ms diff 337Âµs align 134217728 pre 994Âµs on 1.36ms post 1.07ms diff 327Âµs align 100663296 pre 978Âµs on 1.36ms post 1.07ms diff 333Âµs align 67108864 pre 993Âµs on 1.35ms post 1.07ms diff 318Âµs align 50331648 pre 980Âµs on 1.36ms post 1.07ms diff 336Âµs align 33554432 pre 994Âµs on 1.36ms post 1.07ms diff 322Âµs align 25165824 pre 995Âµs on 1.36ms post 1.08ms diff 320Âµs align 16777216 pre 997Âµs on 1.32ms post 1.07ms diff 287Âµs align 12582912 pre 961Âµs on 1.37ms post 1.07ms diff 350Âµs align 8388608 pre 976Âµs on 1.35ms post 1.07ms diff 330Âµs align 6291456 pre 1.14ms on 1.24ms post 1.14ms diff 95Âµs align 4194304 pre 943Âµs on 1.31ms post 1.07ms diff 297Âµs align 3145728 pre 967Âµs on 1.17ms post 989Âµs diff 193Âµs align 2097152 pre 1.05ms on 1.09ms post 1.05ms diff 43.8Âµs align 1572864 pre 1.05ms on 1.07ms post 1.03ms diff 33.1Âµs align 1048576 pre 1.06ms on 1.11ms post 1.04ms diff 59.9Âµs align 786432 pre 1.04ms on 1.1ms post 1.03ms diff 63.5Âµs align 524288 pre 1.08ms on 1.09ms post 1.03ms diff 30.7Âµs align 393216 pre 1.06ms on 1.06ms post 1.05ms diff 4.74Âµs align 262144 pre 1.07ms on 1.1ms post 1.04ms diff 50.4Âµs align 196608 pre 1.05ms on 1.06ms post 1.06ms diff 4.11Âµs align 131072 pre 1.04ms on 1.09ms post 1.03ms diff 49.6Âµs align 98304 pre 1.07ms on 1.07ms post 954Âµs diff 63.3Âµs align 65536 pre 1.08ms on 1.1ms post 1.04ms diff 38.5Âµs align 49152 pre 1.04ms on 1.06ms post 998Âµs diff 39.8Âµs align 32768 pre 1.03ms on 1.04ms post 942Âµs diff 53.8Âµs align 24576 pre 969Âµs on 981Âµs post 966Âµs diff 13.6Âµs align 16384 pre 1.07ms on 1.09ms post 974Âµs diff 70Âµs align 12288 pre 999Âµs on 1ms post 996Âµs diff 4.72Âµs ^C arnd@klappe2:~/git/flashbench$ ./flashbench --erasesize=4194304 --blocksize=2048 /dev/mmcblk0 --open-au --open-au-nr=1 sched_setscheduler: Operation not permitted /dev/mmcblk0: Permission denied arnd@klappe2:~/git/flashbench$ sudo ./flashbench --erasesize=4194304 --blocksize=2048 /dev/mmcblk0 --open-au --open-au-nr=1 4MiB 5.19M/s 2MiB 9.33M/s 1MiB 7.56M/s 512KiB 6.99M/s 256KiB 8.29M/s 128KiB 8.11M/s 64KiB 7.33M/s 32KiB 5.84M/s 16KiB 3.64M/s 8KiB 1.55M/s 4KiB 797K/s 2KiB 459K/s arnd@klappe2:~/git/flashbench$ sudo ./flashbench --erasesize=4194304 --blocksize=2048 /dev/mmcblk0 --open-au --open-au-nr=1 4MiB 8.65M/s 2MiB 7.49M/s 1MiB 7.89M/s 512KiB 8.51M/s 256KiB 8.32M/s 128KiB 7.41M/s 64KiB 7.88M/s 32KiB 5.61M/s 16KiB 3.5M/s 8KiB 1.8M/s 4KiB 819K/s 2KiB 455K/s arnd@klappe2:~/git/flashbench$ sudo ./flashbench --erasesize=4194304 --blocksize=2048 /dev/mmcblk0 --open-au --open-au-nr=1 --random 4MiB 4.68M/s 2MiB 7.64M/s 1MiB 8.07M/s 512KiB 8.85M/s 256KiB 8M/s 128KiB 7.52M/s 64KiB 8.3M/s 32KiB 5.84M/s 16KiB 3.79M/s 8KiB 1.51M/s 4KiB 729K/s 2KiB 357K/s arnd@klappe2:~/git/flashbench$ sudo ./flashbench --erasesize=4194304 --blocksize=2048 /dev/mmcblk0 --open-au --open-au-nr=2 --random 4MiB 4.91M/s 2MiB 8.44M/s 1MiB 7.47M/s 512KiB 7.65M/s 256KiB 8.4M/s 128KiB 8.58M/s 64KiB 7.14M/s 32KiB 5.4M/s 16KiB 3.46M/s 8KiB 1.42M/s 4KiB 699K/s 2KiB 343K/s arnd@klappe2:~/git/flashbench$ sudo ./flashbench --erasesize=4194304 --blocksize=4096 /dev/mmcblk0 --open-au --open-au-nr=4 --random 4MiB 6.68M/s 2MiB 6.92M/s 1MiB 7.46M/s 512KiB 7.72M/s 256KiB 8.57M/s 128KiB 8.31M/s 64KiB 7.12M/s 32KiB 5.48M/s 16KiB 3.25M/s 8KiB 1.41M/s 4KiB 700K/s arnd@klappe2:~/git/flashbench$ sudo ./flashbench --erasesize=4194304 --blocksize=8192 /dev/mmcblk0 --open-au --open-au-nr=5 --random 4MiB 8.84M/s 2MiB 6.45M/s 1MiB 7.48M/s 512KiB 7.89M/s 256KiB 8.61M/s 128KiB 8.07M/s 64KiB 7.2M/s 32KiB 5.42M/s 16KiB 3.53M/s 8KiB 1.41M/s arnd@klappe2:~/git/flashbench$ sudo ./flashbench --erasesize=4194304 --blocksize=8192 /dev/mmcblk0 --open-au --open-au-nr=6 --random 4MiB 8.45M/s 2MiB 3.78M/s 1MiB 2.12M/s 512KiB 1.18M/s arnd@klappe2:~/git/flashbench$ sudo ./flashbench --erasesize=4194304 --blocksize=8192 /dev/mmcblk0 --open-au --open-au-nr=8 --random 4MiB 6.17M/s 2MiB 3.73M/s 1MiB 2.12M/s 512KiB 1.18M/s ^C arnd@klappe2:~/git/flashbench$ sudo ./flashbench --erasesize=4194304 --blocksize=8192 /dev/mmcblk0 --open-au --open-au-nr=5 4MiB 7.98M/s 2MiB 8.07M/s 1MiB 8.21M/s 512KiB 9.03M/s 256KiB 9.35M/s 128KiB 7.77M/s 64KiB 8.03M/s 32KiB 5.71M/s 16KiB 3.85M/s 8KiB 1.57M/s arnd@klappe2:~/git/flashbench$ sudo ./flashbench --erasesize=4194304 --blocksize=8192 /dev/mmcblk0 --open-au --open-au-nr=6 4MiB 8.58M/s 2MiB 4.29M/s 1MiB 2.12M/s 512KiB 1.18M/s ^C arnd@klappe2:~/git/flashbench$ sudo ./flashbench --erasesize=$[4194304] --blocksize=8192 /dev/mmcblk0 --random --findfat --fat-nr=6 4MiB 9.05M/s 8.88M/s 8.47M/s 8.53M/s 7.29M/s 9.03M/s 2MiB 8.78M/s 8.79M/s 9.03M/s 8.91M/s 7.66M/s 9.04M/s 1MiB 7.44M/s 7.39M/s 7.23M/s 7.33M/s 8.55M/s 7.26M/s 512KiB 7.39M/s 7.47M/s 7.56M/s 7.46M/s 8.53M/s 7.48M/s 256KiB 8.82M/s 8.41M/s 8.64M/s 8.75M/s 7.34M/s 8.7M/s 128KiB 8.74M/s 8.73M/s 8.63M/s 8.76M/s 7.66M/s 8.74M/s 64KiB 7.17M/s 7.36M/s 7.36M/s 7.34M/s 8.51M/s 7.35M/s 32KiB 5.79M/s 5.82M/s 5.78M/s 5.85M/s 5.66M/s 5.83M/s 16KiB 3.73M/s 3.72M/s 3.77M/s 3.67M/s 3.64M/s 3.65M/s 8KiB 1.46M/s 1.48M/s 1.46M/s 1.47M/s 1.47M/s 1.47M/s

15 years

1
0
0 0

Re: [Flashbench] flashbench of OlexM1 w/SanDisk 32GB CF-kort

by Arnd Bergmann

On Wednesday 13 April 2011, Joacim Thomassen wrote: > Hi Arnd, > > I tried to deliver the test result to the list but got this error: > > Delivery to the following recipient failed permanently: > > flashbench-erase(a)lists.linaro.org > > Technical details of permanent failure: > Google tried to deliver your message, but it was rejected by the recipient domain. We recommend contacting the other email provider for further information about the cause of this error. The error that the other server returned was: 550 550 unknown user (state 14). > Where did you get that address? The correct email is flashbench-results(a)lists.linaro.org, if I wrote that incorrectly somewhere, I should definitely correct it. > Anyway, here are the results for the SanDisk Compact Flash card: Thank you very much! > ubuntu@ubuntu:~$ cat /proc/partitions > major minor #blocks name > > 7 0 687976 loop0 > 8 0 31250432 sda > 8 1 31250416 sda1 > > ubuntu@ubuntu:~$ sudo hdparm -i /dev/sda > > /dev/sda: > > Model=SanDisk, FwRev=HDX, SerialNo=CBZ011811204505 > Config={ HardSect NotMFM Removeable DTR>10Mbs nonMagnetic } > RawCHS=62004/16/63, TrkSize=0, SectSize=576, ECCbytes=4 > BuffType=DualPort, BuffSize=1kB, MaxMultSect=1, MultSect=1 > CurCHS=62004/16/63, CurSects=62500032, LBA=yes, LBAsects=62500864 > IORDY=no, tPIO={min:120,w/IORDY:120}, tDMA={min:120,rec:120} > PIO modes: pio0 pio1 pio2 pio3 pio4 > DMA modes: mdma0 mdma1 mdma2 > UDMA modes: udma0 udma1 udma2 udma3 udma4 *udma5 > AdvancedPM=yes: disabled (255) WriteCache=enabled > Drive conforms to: Unspecified: ATA/ATAPI-4 > > * signifies the current active mode > > ubuntu@ubuntu:~$ sudo flashbench -a -b 1024 /dev/sda > align 8589934592 pre 717µs on 997µs post 765µs diff 256µs > align 4294967296 pre 729µs on 978µs post 751µs diff 238µs > align 2147483648 pre 712µs on 1ms post 761µs diff 266µs > align 1073741824 pre 760µs on 997µs post 750µs diff 242µs > align 536870912 pre 752µs on 1.02ms post 793µs diff 252µs > align 268435456 pre 759µs on 1.04ms post 788µs diff 265µs > align 134217728 pre 802µs on 1.04ms post 797µs diff 240µs > align 67108864 pre 844µs on 1.08ms post 839µs diff 242µs > align 33554432 pre 729µs on 1.01ms post 791µs diff 246µs > align 16777216 pre 705µs on 987µs post 795µs diff 237µs > align 8388608 pre 716µs on 954µs post 765µs diff 213µs > align 4194304 pre 717µs on 988µs post 797µs diff 231µs > align 2097152 pre 718µs on 991µs post 799µs diff 232µs > align 1048576 pre 717µs on 986µs post 796µs diff 230µs > align 524288 pre 717µs on 987µs post 797µs diff 230µs > align 262144 pre 707µs on 990µs post 798µs diff 237µs > align 131072 pre 678µs on 985µs post 790µs diff 251µs > align 65536 pre 678µs on 957µs post 763µs diff 236µs > align 32768 pre 680µs on 957µs post 761µs diff 237µs > align 16384 pre 763µs on 904µs post 650µs diff 198µs > align 8192 pre 762µs on 801µs post 764µs diff 37.6µs > align 4096 pre 763µs on 797µs post 764µs diff 34.2µs > align 2048 pre 765µs on 799µs post 764µs diff 34.5µs The data must be misleading on this card. Unfortunately, flashbench -a is not completely reliable in finding out the erase block size. From the LBAsects=62500864 line above, I conclude that the actual size of the erase block is probably 2 MB, as that is the largest power-of-two number that is a fraction of the size (15259 * 2 MB). > root@ubuntu:/home/ubuntu/flashbench# for i in `seq 1 10`; do echo $i; > flashbench -O --erasesize=$[64 * 1024 * 1024] /dev/sda --open-au-nr=$i > --random; done > 1 > 64MiB 39.3M/s > 32MiB 70.1M/s > 16MiB 70.2M/s > 8MiB 25.8M/s > 4MiB 18M/s > 2MiB 9.41M/s > 1MiB 4.93M/s > 512KiB 2.35M/s > 256KiB 1.14M/s > 128KiB 596K/s > 64KiB 3.87M/s > 32KiB 3.05M/s > 16KiB 2.12M/s The performance of this card is pretty amazing, I have not seen that yet on a CF card. There might be a write cache on the card itself, as hdparm claims, so if that is the case, you should probably disable that cache using hdparm -W 0 /dev/sda during your measurements (not during actual use of course). One thing that is rather clear from this data is that this card is heavily optimized for extremely long writes, 16 MB or longer seem to be ideal. When you do --random writes, writing 128 KB takes roughly the same time as writing 16 MB! This could be a hint that the erase size is really 16 MB. The card evidently also optimizes for random writes up to 64 KB by treating them differently than any larger ones. When you do a 128 KB write or larger, it must be writing the entire 16 MB anyway. It would be nice if you could rerun your test without --random, and with both 2 MB and 16 MB erase size. > 2 > 64MiB 51.6M/s > 32MiB 70.1M/s > 16MiB 70.2M/s > 8MiB 48.9M/s > 4MiB 14.7M/s > 2MiB 5.82M/s > 1MiB 3.22M/s > 512KiB 1.57M/s > 256KiB 790K/s > 128KiB 392K/s > 64KiB 2.72M/s > 32KiB 1.74M/s > 16KiB 1.61M/s Unfortunately, the larger numbers don't provide more insight here. > root@ubuntu:/home/ubuntu/flashbench# flashbench --findfat --fat-nr=10 > --erasesize=$[64 * 1024 * 1024] --blocksize=1024 /dev/sda > 64MiB 47.1M/s 70M/s 69.9M/s 69.8M/s 69M/s 70.3M/s 70.4M/s > 70.3M/s 65.5M/s 70.2M/s > 32MiB 69.3M/s 70.4M/s 70M/s 70.4M/s 70.4M/s 70.4M/s 68.4M/s > 70.4M/s 70.5M/s 70.4M/s > 16MiB 43.7M/s 58.2M/s 70.4M/s 70.4M/s 69.4M/s 66.4M/s 70.3M/s > 69.4M/s 58.6M/s 70.5M/s > 8MiB 70.3M/s 70.4M/s 69.4M/s 58M/s 70.3M/s 58.7M/s 38.8M/s > 70.3M/s 69.3M/s 70.3M/s > 4MiB 69.3M/s 69.9M/s 70.3M/s 70.3M/s 69.1M/s 70.3M/s 70.3M/s > 66.2M/s 69.3M/s 70.3M/s > 2MiB 69.1M/s 69.8M/s 70.2M/s 66.1M/s 70.1M/s 70.2M/s 68.1M/s > 70.3M/s 70.2M/s 70.2M/s > 1MiB 69.3M/s 64.6M/s 70M/s 70.1M/s 64.8M/s 69.9M/s 70M/s > 64.5M/s 69.9M/s 65.6M/s > 512KiB 65.2M/s 61.1M/s 68.6M/s 68.7M/s 69.7M/s 69.7M/s 43M/s > 69.5M/s 69.6M/s 68.6M/s > 256KiB 60M/s 61M/s 60.8M/s 60.8M/s 60.4M/s 60.9M/s 60.9M/s > 60.7M/s 60.2M/s 60.8M/s > 128KiB 68M/s 61.2M/s 63.4M/s 69.3M/s 69.3M/s 68.4M/s 68.4M/s > 69.3M/s 69.3M/s 69.3M/s > 64KiB 37M/s 54.8M/s 55.4M/s 54.9M/s 55.2M/s 55.3M/s 55.4M/s > 54.7M/s 55.4M/s 55.8M/s > 32KiB 23.9M/s 23.9M/s 23.9M/s 24M/s 24.2M/s 19.9M/s 24.1M/s > 24.2M/s 23.9M/s 24M/s > 16KiB 8.89M/s 8.91M/s 8.94M/s 8.28M/s 8.95M/s 8.99M/s 8.82M/s > 8.73M/s 8.91M/s 8.97M/s > 8KiB 5.02M/s 4.81M/s 5.03M/s 5.02M/s 5.02M/s 5.02M/s 5.02M/s > 5.03M/s 5.02M/s 5.03M/s > 4KiB 2.11M/s 2.14M/s 2.11M/s 2.14M/s 2.12M/s 2.14M/s 2.12M/s > 2.11M/s 2.12M/s 2.14M/s > 2KiB 1.1M/s 1.11M/s 1.11M/s 1.11M/s 1.11M/s 1.09M/s 1.11M/s > 1.11M/s 1.11M/s 1.11M/s > 1KiB 545K/s 546K/s 543K/s 546K/s 546K/s 546K/s 547K/s > 544K/s 546K/s 546K/s Fascinating. It's not possible to actually see any FAT optimizations here (I would be surprised if this card did that), but the numbers for each of the columns are about the same as on my expensive Intel X25 SSD. What is obvious here is that 64 KB is the minimum size required to get the full performance. Arnd

15 years

1
0
0 0

Kingston class 4 microSDHC 4GB (authentic)

by Arnd Bergmann

==> /sys/block/mmcblk0/device/cid <== 02544d5341303447062263db5f00ac00 ==> /sys/block/mmcblk0/device/csd <== 400e00325b5900001d6f7f800a400000 ==> /sys/block/mmcblk0/device/date <== 12/2010 ==> /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 <== 0x6 ==> /sys/block/mmcblk0/device/hwrev <== 0x0 ==> /sys/block/mmcblk0/device/manfid <== 0x000002 ==> /sys/block/mmcblk0/device/name <== SA04G ==> /sys/block/mmcblk0/device/oemid <== 0x544d ==> /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 <== 0x2263db5f ==> /sys/block/mmcblk0/device/subsystem <== head: error reading `/sys/block/mmcblk0/device/subsystem': Is a directory ==> /sys/block/mmcblk0/device/type <== SD Disk /dev/mmcblk0: 3951 MB, 3951034368 bytes 255 heads, 63 sectors/track, 480 cylinders, total 7716864 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 Device Boot Start End Blocks Id System /dev/mmcblk0p1 * 63 240974 120456 c W95 FAT32 (LBA) /dev/mmcblk0p2 240975 7132859 3445942+ 83 Linux $ sudo ./flashbench -a /dev/mmcblk0 --blocksize 1024align 402653184 pre 1.51ms on 2.84ms post 1.66ms diff 1.25ms align 268435456 pre 1.49ms on 2.86ms post 1.66ms diff 1.28ms align 201326592 pre 1.51ms on 2.85ms post 1.66ms diff 1.26ms align 134217728 pre 1.53ms on 2.88ms post 1.68ms diff 1.28ms align 100663296 pre 1.52ms on 2.87ms post 1.67ms diff 1.27ms align 67108864 pre 1.52ms on 2.86ms post 1.66ms diff 1.26ms align 50331648 pre 1.53ms on 2.85ms post 1.66ms diff 1.26ms align 33554432 pre 1.52ms on 2.85ms post 1.66ms diff 1.26ms align 25165824 pre 1.52ms on 2.85ms post 1.66ms diff 1.26ms align 16777216 pre 1.51ms on 2.84ms post 1.66ms diff 1.25ms align 12582912 pre 1.51ms on 2.84ms post 1.66ms diff 1.25ms align 8388608 pre 1.42ms on 2.75ms post 1.66ms diff 1.21ms align 6291456 pre 1.54ms on 1.56ms post 1.55ms diff 14.4µs align 4194304 pre 1.41ms on 2.63ms post 1.54ms diff 1.15ms align 3145728 pre 1.55ms on 2.66ms post 1.55ms diff 1.11ms align 2097152 pre 1.54ms on 1.56ms post 1.55ms diff 14.2µs align 1572864 pre 1.54ms on 2.65ms post 1.54ms diff 1.11ms align 1048576 pre 1.54ms on 1.56ms post 1.54ms diff 16.2µs align 786432 pre 1.54ms on 2.65ms post 1.54ms diff 1.11ms align 524288 pre 1.54ms on 1.56ms post 1.54ms diff 15.8µs align 393216 pre 1.54ms on 2.65ms post 1.54ms diff 1.11ms align 262144 pre 1.54ms on 1.56ms post 1.54ms diff 15.6µs align 196608 pre 1.54ms on 2.65ms post 1.54ms diff 1.11ms align 131072 pre 1.54ms on 1.56ms post 1.54ms diff 16.1µs align 98304 pre 1.54ms on 2.65ms post 1.54ms diff 1.11ms align 65536 pre 1.54ms on 1.56ms post 1.54ms diff 16.1µs align 49152 pre 1.54ms on 2.64ms post 1.54ms diff 1.1ms align 32768 pre 1.54ms on 1.55ms post 1.54ms diff 15.5µs align 24576 pre 1.54ms on 2.65ms post 1.54ms diff 1.11ms align 16384 pre 1.54ms on 1.56ms post 1.54ms diff 15.6µs align 12288 pre 1.54ms on 1.54ms post 1.54ms diff -649ns align 8192 pre 1.54ms on 1.56ms post 1.54ms diff 15.7µs align 6144 pre 1.54ms on 1.54ms post 1.54ms diff 660ns align 4096 pre 1.54ms on 1.54ms post 1.54ms diff 458ns align 3072 pre 1.54ms on 1.54ms post 1.54ms diff -132ns align 2048 pre 1.54ms on 1.54ms post 1.54ms diff -1008ns $ sudo ./flashbench --open-au --open-au-nr=1 --erasesize=$[4*1024*1024] --blocksize=512 /dev/mmcblk0 --offset=$[32 * 1024 * 1024] 4MiB 3.35M/s 2MiB 2.56M/s 1MiB 1.77M/s 512KiB 1.76M/s 256KiB 1.76M/s 128KiB 2.54M/s 64KiB 4.59M/s 32KiB 4.46M/s 16KiB 3.54M/s 8KiB 2.93M/s 4KiB 2.25M/s 2KiB 22.1K/s arnd@klappe2:~/git/flashbench$ sudo ./flashbench --open-au --open-au-nr=2 --erasesize=$[4*1024*1024] --blocksize=512 /dev/mmcblk0 --offset=$[32 * 1024 * 1024] 4MiB 4.17M/s 2MiB 2.76M/s 1MiB 1.38M/s 512KiB 700K/s 256KiB 355K/s ^C arnd@klappe2:~/git/flashbench$ sudo ./flashbench --open-au --open-au-nr=1 --erasesize=$[4*1024*1024] --blocksize=512 /dev/mmcblk0 --offset=$[32 * 1024 * 1024] --random 4MiB 3.05M/s 2MiB 1.18M/s 1MiB 1.4M/s 512KiB 556K/s 256KiB 310K/s 128KiB 141K/s ^C

15 years

1
0
0 0

Mobile phone factory

by Picasa Web Albums

Dear Friends and partners , Our company focus on the OEM and ODM business with mobile phone. Anything more you want to know, please send us email. Best wishes Juce Tel: 86-0755-85282599 Fax: 86-0755-81752355 E-mail: elink(a)vip.188.com / sales(a)elink-mobile.com Web size: www.elink-mobile.com Factory Address: 5/F, Building 21, ChenTian Industrial Park, Shenzhen, GuangDong Province, China

15 years

1
0
0 0

Sandisk Extreme III (2007)

by Arnd Bergmann

==> /sys/block/mmcblk0/device/block <== head: error reading `/sys/block/mmcblk0/device/block': Is a directory ==> /sys/block/mmcblk0/device/cid <== 03534453443034478030cd99b2007600 ==> /sys/block/mmcblk0/device/csd <== 400e00325b5900001e5c7f800a404000 ==> /sys/block/mmcblk0/device/date <== 06/2007 ==> /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 <== 0x8 ==> /sys/block/mmcblk0/device/manfid <== 0x000003 ==> /sys/block/mmcblk0/device/name <== SD04G ==> /sys/block/mmcblk0/device/oemid <== 0x5344 ==> /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 <== 0235000000000000 ==> /sys/block/mmcblk0/device/serial <== 0x30cd99b2 ==> /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 --blocksize 1024 align 805306368 pre 781µs on 816µs post 639µs diff 106µs align 536870912 pre 783µs on 836µs post 662µs diff 113µs align 402653184 pre 823µs on 857µs post 665µs diff 113µs align 268435456 pre 831µs on 867µs post 659µs diff 122µs align 201326592 pre 768µs on 806µs post 609µs diff 117µs align 134217728 pre 833µs on 868µs post 663µs diff 120µs align 100663296 pre 777µs on 806µs post 611µs diff 111µs align 67108864 pre 722µs on 785µs post 592µs diff 128µs align 50331648 pre 706µs on 782µs post 671µs diff 93.7µs align 33554432 pre 744µs on 797µs post 576µs diff 136µs align 25165824 pre 554µs on 649µs post 572µs diff 85.3µs align 16777216 pre 637µs on 681µs post 567µs diff 79.4µs align 12582912 pre 648µs on 677µs post 581µs diff 62.2µs align 8388608 pre 650µs on 678µs post 582µs diff 61.8µs align 6291456 pre 714µs on 747µs post 586µs diff 96.7µs align 4194304 pre 729µs on 772µs post 662µs diff 76.5µs align 3145728 pre 650µs on 684µs post 586µs diff 65.4µs align 2097152 pre 720µs on 747µs post 582µs diff 95.8µs align 1572864 pre 731µs on 745µs post 669µs diff 45.3µs align 1048576 pre 781µs on 837µs post 658µs diff 117µs align 786432 pre 690µs on 692µs post 671µs diff 11.1µs align 524288 pre 732µs on 745µs post 666µs diff 45.7µs align 393216 pre 704µs on 686µs post 673µs diff -1998ns align 262144 pre 694µs on 689µs post 671µs diff 6.82µs align 196608 pre 701µs on 687µs post 674µs diff -594ns align 131072 pre 690µs on 685µs post 670µs diff 5.34µs align 98304 pre 702µs on 690µs post 670µs diff 4.34µs align 65536 pre 704µs on 685µs post 670µs diff -2468ns align 49152 pre 685µs on 697µs post 658µs diff 25.7µs align 32768 pre 701µs on 688µs post 671µs diff 2.15µs align 24576 pre 604µs on 679µs post 675µs diff 39.4µs align 16384 pre 694µs on 691µs post 656µs diff 15.7µs align 12288 pre 651µs on 656µs post 642µs diff 9.39µs align 8192 pre 625µs on 669µs post 671µs diff 21µs align 6144 pre 641µs on 626µs post 632µs diff -10210n sudo ./flashbench --open-au --erasesize=$[2*512*1024] --blocksize=8192 /dev/mmcblk0 --open-au-nr=3 --random 1MiB 8.38M/s 512KiB 8.38M/s 256KiB 7.01M/s 128KiB 7.06M/s 64KiB 6.93M/s 32KiB 5.54M/s 16KiB 5.42M/s 8KiB 2.26M/s --blocksize=8192 /dev/mmcblk0 --open-au-nr=3 --random 1MiB 6.85M/s 512KiB 8.35M/s 256KiB 8.37M/s 128KiB 7.01M/s 64KiB 7.01M/s 32KiB 6.67M/s 16KiB 5.43M/s 8KiB 2.26M/s arnd@klappe2:~/git/flashbench$ sudo ./flashbench --open-au --erasesize=$[1024*1024] --blocksize=8192 /dev/mmcblk0 --open-au-nr=4 --random 1MiB 7.89M/s 512KiB 9.3M/s 256KiB 7.98M/s 128KiB 4.76M/s 64KiB 3.55M/s ^C arnd@klappe2:~/git/flashbench$ sudo ./flashbench --open-au --erasesize=$[1024*1024] --blocksize=8192 /dev/mmcblk0 --open-au-nr=4 --random 1MiB 7.98M/s 512KiB 8.01M/s 256KiB 7.04M/s 128KiB 5.2M/s 64KiB 3.38M/s 32KiB 1.95M/s 16KiB 1.01M/s 8KiB 498K/s arnd@klappe2:~/git/flashbench$ sudo ./flashbench --open-au --erasesize=$[1024*1024] --blocksize=8192 /dev/mmcblk0 --open-au-nr=7 1MiB 12M/s 512KiB 10.7M/s 256KiB 10.6M/s 128KiB 10.6M/s 64KiB 10.6M/s 32KiB 12M/s 16KiB 8.91M/s 8KiB 6.15M/s arnd@klappe2:~/git/flashbench$ sudo ./flashbench --open-au --erasesize=$[1024*1024] --blocksize=8192 /dev/mmcblk0 --open-au-nr=10 1MiB 12.3M/s 512KiB 6.71M/s 256KiB 3.46M/s 128KiB 1.68M/s arnd@klappe2:~/git/flashbench$ sudo ./flashbench --open-au --erasesize=$[1024*1024] --blocksize=512 /dev/mmcblk0 --open-au-nr=7 1MiB 8.21M/s 512KiB 10.5M/s 256KiB 10.4M/s 128KiB 10.4M/s 64KiB 10.5M/s 32KiB 11.7M/s 16KiB 8.93M/s 8KiB 6.1M/s 4KiB 3.32M/s 2KiB 1.62M/s

15 years

1
0
0 0

Save your money and time in exhibition, this is the best supplier for mobile phone

by Picasa Web Albums

Hey guys, Our company focus on the OEM and ODM business with mobile phone. Attached is our new items, please kindly check. New price come out, please contact us for the detail. Best Regards Juce Mobile: 86-13424432252 Tel:(86)755-85282599 Fax:(86)755-81752355 Web Size: www.elink-mobile.com E-mail: elink(a)vip.188.com / sales(a)elink-mobile.com

15 years

1
0
0 0

Re: [Flashbench] IPPBX For Distributor

by Alex

Dear Product Manager From google, we get to know that you focus on communication pruducts with high reputation.We are professional IP-PBX,GSM gateway manufacturer with high-quality and competitive price. MyPBX STD V4 is the newest version that supports PSTN,GSM,VoIP trunks with FXS / FXO / PRI / BRI (ISDN) ports. It is embedded hybrid IP-PBX which caters for the small businesses. Please feel free to contact me to get further information to open our cooperation relationship in 2011. Thanks&Best Regards Alex Yeastar Technology Co.,Ltd Web: www.yeastar.com MSN: hqy(a)yeastar.com Skype: Yeastar.hqy Tel: +86 592 5503309 Ext.8026 Add: 202,No.23 Wanghai Road, 2nd Software Park, Xiamen, China --------------------------------------------------------------------------------

15 years

1
0
0 0

Results for Sandisk class 4 "SDHC card"

by Sascha Silbe

sascha.silbe@flatty:~$ find /sys/block/mmcblk0/device/ -maxdepth 1 -type f -printf '\n%f:\n' -exec cat \{\} \; uevent: DRIVER=mmcblk MMC_TYPE=SD MMC_NAME=SD04G MODALIAS=mmc:block cid: 0353445344303447800218eb1900a900 csd: 400e00325b5900001d8a7f800a404000 scr: 0235800000000000 date: 09/2010 fwrev: 0x0 hwrev: 0x8 manfid: 0x000003 name: SD04G oemid: 0x5344 serial: 0x0218eb19 type: SD Size: 3965190144B = 3872256 KiB flashtest@flatty:~/flashbench$ ./flashbench -a /dev/mmcblk0 --blocksize=1024 --count=1000 align 1073741824 pre 3.05ms on 3.83ms post 3.03ms diff 791µs align 536870912 pre 2.92ms on 3.79ms post 2.97ms diff 840µs align 268435456 pre 2.93ms on 3.85ms post 3.03ms diff 871µs align 134217728 pre 2.91ms on 3.78ms post 2.97ms diff 839µs align 67108864 pre 2.94ms on 3.84ms post 3.04ms diff 855µs align 33554432 pre 2.88ms on 3.78ms post 2.97ms diff 853µs align 16777216 pre 2.94ms on 3.85ms post 3.03ms diff 862µs align 8388608 pre 2.62ms on 3.5ms post 2.66ms diff 858µs align 4194304 pre 2.61ms on 3.49ms post 2.65ms diff 857µs align 2097152 pre 2.61ms on 3.51ms post 2.66ms diff 868µs align 1048576 pre 2.62ms on 3.5ms post 2.66ms diff 862µs align 524288 pre 2.63ms on 3.51ms post 2.67ms diff 859µs align 262144 pre 2.66ms on 2.94ms post 2.67ms diff 280µs align 131072 pre 2.66ms on 2.94ms post 2.66ms diff 281µs align 65536 pre 2.67ms on 2.97ms post 2.67ms diff 300µs align 32768 pre 2.66ms on 2.96ms post 2.67ms diff 293µs align 16384 pre 2.7ms on 2.95ms post 2.67ms diff 264µs align 8192 pre 2.69ms on 2.95ms post 2.67ms diff 272µs align 4096 pre 2.66ms on 2.71ms post 2.66ms diff 52.5µs align 2048 pre 2.67ms on 2.67ms post 2.67ms diff 2.51µs Trying to determine max. number of open AUs in non-random mode, 5 samples each: EBS=524288 ; for NUMAU in $(seq 1 10) ; do echo "Trying $NUMAU open AUs:" ; ./flashbench --open-au --open-au-nr=$NUMAU --erasesize=$EBS /dev/mmcblk0 |tr -s ' ' |tr ' ' '\t' > out.1 ; for nr in $(seq 2 5) ; do ./flashbench --open-au --open-au-nr=$NUMAU --erasesize=$EBS /dev/mmcblk0 |tr -s ' '|cut -d ' ' -f 2 > out.$nr ; done ; paste out.* ; done Trying 1 open AUs: 512KiB 5.95M/s 4.96M/s 4.99M/s 4.92M/s 5M/s 256KiB 6.47M/s 4.25M/s 5.15M/s 4.63M/s 3.21M/s 128KiB 6.48M/s 4.99M/s 4.83M/s 4.83M/s 3.34M/s 64KiB 6.5M/s 5.5M/s 4.95M/s 4.95M/s 3.19M/s 32KiB 6.13M/s 5.38M/s 5.01M/s 5.06M/s 3.85M/s 16KiB 5.35M/s 5.32M/s 5.29M/s 5.34M/s 3.35M/s Trying 2 open AUs: 512KiB 4.6M/s 4.06M/s 1.64M/s 4.68M/s 4.4M/s 256KiB 4.4M/s 3.71M/s 4.32M/s 3.7M/s 4.24M/s 128KiB 3.71M/s 4.03M/s 4M/s 3.65M/s 4.19M/s 64KiB 3.89M/s 4.14M/s 4.07M/s 3.63M/s 4.45M/s 32KiB 4.38M/s 4.01M/s 3.92M/s 4.34M/s 3.81M/s 16KiB 3.25M/s 2.7M/s 3.68M/s 3.05M/s 3.72M/s Trying 3 open AUs: 512KiB 4.56M/s 4.68M/s 4.36M/s 4.48M/s 4.13M/s 256KiB 4.37M/s 4.39M/s 4.18M/s 3.8M/s 3.99M/s 128KiB 4.3M/s 4.12M/s 4.16M/s 3.72M/s 2.3M/s 64KiB 5.33M/s 4.21M/s 4.82M/s 4.28M/s 4.7M/s 32KiB 3.82M/s 4.14M/s 3.8M/s 3.7M/s 4.2M/s 16KiB 3.38M/s 3.15M/s 3.52M/s 3.45M/s 3.19M/s Trying 4 open AUs: 512KiB 4.48M/s 3.86M/s 4.72M/s 4.43M/s 4.25M/s 256KiB 4.29M/s 2.84M/s 3.64M/s 3.85M/s 3.6M/s 128KiB 4.54M/s 1.69M/s 1.47M/s 4.06M/s 2.41M/s 64KiB 4.58M/s 4.2M/s 4.74M/s 1.93M/s 4.55M/s 32KiB 4.11M/s 4.03M/s 3.71M/s 4.5M/s 1.46M/s 16KiB 3.32M/s 2.64M/s 2.14M/s 3.2M/s 3.13M/s Trying 5 open AUs: 512KiB 4.19M/s 1.4M/s 4.26M/s 4.21M/s 4.53M/s 256KiB 4.35M/s 4.31M/s 2.07M/s 1.92M/s 3.85M/s 128KiB 4.8M/s 4.65M/s 4.55M/s 3.71M/s 3.89M/s 64KiB 3.54M/s 4.2M/s 4.05M/s 4.33M/s 4.48M/s 32KiB 1.87M/s 3.95M/s 4.07M/s 3.91M/s 3.85M/s 16KiB 2.71M/s 2.63M/s 1.7M/s 1.17M/s 873K/s Trying 6 open AUs: 512KiB 4.31M/s 4.02M/s 3.91M/s 4.03M/s 4.51M/s 256KiB 4.13M/s 3.87M/s 3.92M/s 3.97M/s 3.99M/s 128KiB 4.1M/s 4.24M/s 4.13M/s 4.09M/s 4.06M/s 64KiB 4.25M/s 4.52M/s 4.47M/s 4.09M/s 4.13M/s 32KiB 4.03M/s 4.09M/s 2.41M/s 4.13M/s 4.4M/s 16KiB 879K/s 1.11M/s 826K/s 889K/s 1.06M/s Trying 7 open AUs: 512KiB 4.19M/s 4.06M/s 4.11M/s 4.11M/s 4.18M/s 256KiB 4.04M/s 4.38M/s 4.39M/s 4.03M/s 4M/s 128KiB 4.35M/s 4.39M/s 4.49M/s 4.18M/s 4.2M/s 64KiB 4.17M/s 3.87M/s 4.17M/s 3.84M/s 4.17M/s 32KiB 1.15M/s 1M/s 3.82M/s 1.76M/s 1.03M/s 16KiB 1.54M/s 1.44M/s 868K/s 1.29M/s 1.99M/s Trying 8 open AUs: 512KiB 4.14M/s 4.24M/s 4.33M/s 4.41M/s 4.2M/s 256KiB 4.03M/s 4.12M/s 4.14M/s 3.07M/s 4.04M/s 128KiB 4.28M/s 4.33M/s 3.89M/s 2.19M/s 4.46M/s 64KiB 2.07M/s 1.05M/s 1.49M/s 1.53M/s 1.91M/s 32KiB 1.24M/s 3.85M/s 1.01M/s 2.17M/s 1.56M/s 16KiB 1.59M/s 1.67M/s 3.3M/s 1.03M/s 1.36M/s Trying 9 open AUs: 512KiB 4.15M/s 4.19M/s 4.06M/s 3.34M/s 4.07M/s 256KiB 4.07M/s 4.19M/s 4.02M/s 4.09M/s 3.97M/s 128KiB 2.55M/s 1.59M/s 4.38M/s 2.62M/s 2.78M/s 64KiB 1.42M/s 2.97M/s 2.88M/s 1.72M/s 2.72M/s 32KiB 1.46M/s 1.05M/s 995K/s 1.42M/s 1.13M/s 16KiB 3.3M/s 1.27M/s 1.98M/s 1.73M/s 1.54M/s Trying 10 open AUs: 512KiB 4.18M/s 3.57M/s 4.04M/s 4.07M/s 4.15M/s 256KiB 4.18M/s 4.15M/s 3.9M/s 4.1M/s 4.16M/s 128KiB 3.53M/s 2.73M/s 2.48M/s 2.38M/s 3.05M/s 64KiB 1.66M/s 1.72M/s 2.6M/s 2.09M/s 2.63M/s 32KiB 2.71M/s 1.22M/s 1.37M/s 1.19M/s 977K/s 16KiB 906K/s 1.39M/s 1.21M/s 1.44M/s 1.55M/s Trying to determine max. number of open AUs in random mode, 5 samples each: EBS=524288 ; for NUMAU in $(seq 1 10) ; do echo "Trying $NUMAU open AUs:" ; ./flashbench --open-au --random --open-au-nr=$NUMAU --erasesize=$EBS /dev/mmcblk0 |tr -s ' ' |tr ' ' '\t' > out.1 ; for nr in $(seq 2 5) ; do ./flashbench --open-au --random --open-au-nr=$NUMAU --erasesize=$EBS /dev/mmcblk0 |tr -s ' '|cut -d ' ' -f 2 > out.$nr ; done ; paste out.* ; done Trying 1 open AUs: 512KiB 6.03M/s 4.23M/s 3.99M/s 3.82M/s 4.49M/s 256KiB 6.47M/s 3.83M/s 3.74M/s 3.61M/s 4.14M/s 128KiB 6.48M/s 3.69M/s 3.51M/s 3.62M/s 3.56M/s 64KiB 6.46M/s 3.36M/s 3.14M/s 3.54M/s 3.33M/s 32KiB 5.95M/s 3.94M/s 3.87M/s 3.76M/s 3.76M/s 16KiB 5.15M/s 3.77M/s 2.68M/s 3.8M/s 3.72M/s Trying 2 open AUs: 512KiB 4.58M/s 4.7M/s 4.58M/s 5.04M/s 4.56M/s 256KiB 4.39M/s 3.98M/s 4.19M/s 4.08M/s 4.3M/s 128KiB 4.07M/s 4.14M/s 4.1M/s 3.99M/s 3.47M/s 64KiB 3.44M/s 4.55M/s 3.43M/s 4.05M/s 3.67M/s 32KiB 4.42M/s 4.34M/s 4.38M/s 3.85M/s 4.39M/s 16KiB 3.33M/s 3.44M/s 3.28M/s 3.28M/s 3.3M/s Trying 3 open AUs: 512KiB 3.89M/s 4.2M/s 3.93M/s 4.17M/s 4.43M/s 256KiB 4.59M/s 3.86M/s 3.89M/s 4.07M/s 4.09M/s 128KiB 4.07M/s 4.17M/s 3.71M/s 4.15M/s 4.17M/s 64KiB 3.5M/s 4.81M/s 3.86M/s 4.7M/s 4.64M/s 32KiB 1.05M/s 3.92M/s 4.23M/s 4.2M/s 3.96M/s 16KiB 3.35M/s 3.46M/s 3.15M/s 3.19M/s 3.44M/s Trying 4 open AUs: 512KiB 3.99M/s 3.88M/s 4.13M/s 4.1M/s 2.56M/s 256KiB 4.53M/s 2.87M/s 4M/s 3.8M/s 4.29M/s 128KiB 4.44M/s 4.04M/s 3.11M/s 4.29M/s 4.19M/s 64KiB 4.92M/s 1.45M/s 4.85M/s 3.24M/s 3.58M/s 32KiB 3.89M/s 4.01M/s 1.44M/s 1.56M/s 4.44M/s 16KiB 3.42M/s 3.36M/s 3.4M/s 3.35M/s 2.61M/s Trying 5 open AUs: 512KiB 3.97M/s 2.08M/s 1.5M/s 3.9M/s 4.03M/s 256KiB 2.45M/s 2.96M/s 4.5M/s 2.28M/s 1.66M/s 128KiB 4.26M/s 4.39M/s 4.56M/s 1.45M/s 2.16M/s 64KiB 3.46M/s 3.88M/s 4.42M/s 4.74M/s 4.21M/s 32KiB 2.28M/s 3.19M/s 4.27M/s 4.46M/s 3.77M/s 16KiB 2.06M/s 1.81M/s 3.26M/s 3.34M/s 2.69M/s Trying 6 open AUs: 512KiB 4.23M/s 3.91M/s 4.05M/s 4.46M/s 4.2M/s 256KiB 1.65M/s 3.89M/s 4.51M/s 4.29M/s 3.98M/s 128KiB 4.29M/s 4.27M/s 4.27M/s 4.31M/s 4.09M/s 64KiB 2.13M/s 4.38M/s 4.13M/s 4.11M/s 4.28M/s 32KiB 3.82M/s 3.84M/s 3.96M/s 4.33M/s 1.78M/s 16KiB 1.07M/s 646K/s 975K/s 1.13M/s 1.17M/s Trying 7 open AUs: 512KiB 4.19M/s 4.29M/s 4.39M/s 4.13M/s 4.03M/s 256KiB 3.97M/s 3.98M/s 4.08M/s 4.23M/s 4.13M/s 128KiB 4.14M/s 4.31M/s 4.37M/s 4.54M/s 4.25M/s 64KiB 4.35M/s 4.4M/s 4.27M/s 4.58M/s 3.18M/s 32KiB 3.09M/s 1.44M/s 2.32M/s 1.12M/s 1.04M/s 16KiB 1.03M/s 966K/s 787K/s 1.84M/s 3.23M/s Trying 8 open AUs: 512KiB 4.33M/s 3.81M/s 4.02M/s 3.99M/s 4.02M/s 256KiB 4.08M/s 4.13M/s 4.06M/s 4.03M/s 3.87M/s 128KiB 4.35M/s 4.33M/s 4.69M/s 4.31M/s 1.85M/s 64KiB 2.83M/s 1.52M/s 1.38M/s 2.55M/s 3.81M/s 32KiB 1.54M/s 3.25M/s 1.7M/s 1.01M/s 1.43M/s 16KiB 883K/s 1.29M/s 1.04M/s 1.7M/s 1.21M/s Trying 9 open AUs: 512KiB 3.92M/s 2.78M/s 4.01M/s 4.01M/s 3.7M/s 256KiB 4.13M/s 3.77M/s 4.11M/s 4.04M/s 4.05M/s 128KiB 4.31M/s 3.25M/s 1.88M/s 4.4M/s 2.81M/s 64KiB 4.42M/s 1.8M/s 2.05M/s 2.8M/s 1.84M/s 32KiB 1.51M/s 1.46M/s 1.37M/s 1.2M/s 1.32M/s 16KiB 1.24M/s 1.68M/s 1.31M/s 1.71M/s 1.46M/s Trying 10 open AUs: 512KiB 4.03M/s 4.4M/s 4.08M/s 4.22M/s 4.14M/s 256KiB 3.98M/s 3.79M/s 3.93M/s 4M/s 4.07M/s 128KiB 3M/s 1.71M/s 4.23M/s 4.04M/s 1.62M/s 64KiB 2.87M/s 1.99M/s 2.01M/s 1.89M/s 3.44M/s 32KiB 1.02M/s 1.01M/s 1.23M/s 1.75M/s 1.17M/s 16KiB 1.67M/s 972K/s 1.11M/s 970K/s 1.58M/s flashtest@flatty:~/flashbench$ ./flashbench --findfat --random --erasesize=524288 /dev/mmcblk0 512KiB 5.33M/s 6.24M/s 6.23M/s 6.24M/s 6.23M/s 6.23M/s 256KiB 6.21M/s 6.23M/s 6.22M/s 6.25M/s 6.25M/s 6.08M/s 128KiB 6.23M/s 6.25M/s 6.25M/s 6.26M/s 6M/s 5.75M/s 64KiB 6.02M/s 6.04M/s 6.15M/s 4M/s 4.01M/s 4.5M/s 32KiB 5.2M/s 5.9M/s 5.9M/s 5.88M/s 5.91M/s 5.91M/s 16KiB 5.2M/s 5.2M/s 5.19M/s 5.17M/s 5.21M/s 5.19M/s flashtest@flatty:~/flashbench$ I hope you can read more into that data than I do. I have a feeling 5 samples are not enough to reliably determine the number of open AUs for this card. Sascha -- http://sascha.silbe.org/ http://www.infra-silbe.de/

15 years

2
10
0 0

intel x25 SSD

by Arnd Bergmann

# need to disable write cache for meaningful tests $ sudo hdparm -W0 /dev/sdb /dev/sdb: setting drive write-caching to 0 (off) # erase size is 10 MB apparently, need a large count to get meaningful data $ sudo ./flashbench -a --blocksize=10240 /dev/sdb7 --count=1000 align 2013265920 pre 76.5µs on 77.4µs post 74.8µs diff 1.77µs align 1342177280 pre 61.1µs on 62.2µs post 61.3µs diff 989ns align 1006632960 pre 73.8µs on 74.9µs post 73.6µs diff 1.22µs align 671088640 pre 73.7µs on 74.8µs post 73.6µs diff 1.16µs align 503316480 pre 88.7µs on 89.8µs post 86.9µs diff 1.98µs align 335544320 pre 88.9µs on 90.8µs post 87µs diff 2.79µs align 251658240 pre 91.5µs on 92.7µs post 88.2µs diff 2.85µs align 167772160 pre 91.6µs on 92.7µs post 88µs diff 2.87µs align 125829120 pre 91.6µs on 92.5µs post 88µs diff 2.71µs align 83886080 pre 92µs on 92.9µs post 88.2µs diff 2.82µs align 62914560 pre 91.6µs on 92.6µs post 88.3µs diff 2.71µs align 41943040 pre 92.1µs on 92.7µs post 88.5µs diff 2.41µs align 31457280 pre 92µs on 92.9µs post 88.2µs diff 2.78µs align 20971520 pre 92.1µs on 92.9µs post 88.4µs diff 2.65µs align 15728640 pre 92.1µs on 92.1µs post 88.4µs diff 1.85µs align 10485760 pre 92.5µs on 93µs post 88.3µs diff 2.64µs align 7864320 pre 91.7µs on 91.8µs post 88.3µs diff 1.75µs align 5242880 pre 91.7µs on 91.8µs post 88.5µs diff 1.67µs align 3932160 pre 90µs on 89.2µs post 87.2µs diff 611ns align 2621440 pre 89.9µs on 89.1µs post 87.1µs diff 625ns align 1966080 pre 89.7µs on 89.2µs post 87.1µs diff 786ns align 1310720 pre 89.9µs on 89.2µs post 87.1µs diff 685ns align 983040 pre 90.1µs on 89.2µs post 87.2µs diff 489ns align 655360 pre 89.7µs on 88.9µs post 87µs diff 605ns align 491520 pre 89µs on 88.8µs post 86.9µs diff 827ns align 327680 pre 89.5µs on 89.1µs post 86.9µs diff 866ns align 245760 pre 92µs on 91.6µs post 88.4µs diff 1.44µs align 163840 pre 89.5µs on 89.1µs post 87.3µs diff 668ns align 122880 pre 89.2µs on 89.1µs post 87.1µs diff 923ns align 81920 pre 86.4µs on 86.5µs post 85.7µs diff 430ns align 61440 pre 86.1µs on 86µs post 85.9µs diff 1ns align 40960 pre 86.8µs on 86.6µs post 85.8µs diff 265ns align 30720 pre 85.5µs on 85.5µs post 87.3µs diff -866ns align 20480 pre 86.1µs on 86.1µs post 85.4µs diff 284ns # page size is 32 KB $ sudo ./flashbench --open-au --open-au-nr=5 /dev/sdb7 --blocksize=512 --erasesize=$[1024 * 1024] 1MiB 75.8M/s 512KiB 80.4M/s 256KiB 67.5M/s 128KiB 59M/s 64KiB 43.4M/s 32KiB 28M/s 16KiB 15.5M/s 8KiB 8.48M/s 4KiB 4.25M/s 2KiB 2.18M/s 1KiB 1.1M/s 512B 553K/s # similar numbers for using 10 MB: $ sudo ./flashbench --open-au --open-au-nr=1 /dev/sdb7 --blocksize=5120 --erasesize=$[10240 * 1024] 10MiB 70.9M/s 5MiB 73.8M/s 2.5MiB 76.8M/s 1.25MiB 77M/s 640KiB 71.9M/s 320KiB 80.5M/s 160KiB 60M/s 80KiB 54.5M/s 40KiB 36.5M/s 20KiB 19.6M/s 10KiB 9.92M/s 5KiB 5.28M/s #trying larger number of open au: $ sudo ./flashbench --open-au /dev/sdb7 --blocksize=$[5120 * 8] --erasesize=$[10240 * 1024] --open-au-nr=2 10MiB 76.5M/s 5MiB 78M/s 2.5MiB 77.8M/s 1.25MiB 73.9M/s 640KiB 70.1M/s 320KiB 63.9M/s 160KiB 56.3M/s 80KiB 53.2M/s 40KiB 33M/s arnd@klappe2:~/git/flashbench$ sudo ./flashbench --open-au /dev/sdb7 --blocksize=$[5120 * 8] --erasesize=$[10240 * 1024] --open-au-nr=3 10MiB 79.1M/s 5MiB 79.1M/s 2.5MiB 79M/s 1.25MiB 73.2M/s 640KiB 68.6M/s 320KiB 63M/s 160KiB 60M/s 80KiB 54.6M/s 40KiB 33.1M/s arnd@klappe2:~/git/flashbench$ sudo ./flashbench --open-au /dev/sdb7 --blocksize=$[5120 * 8] --erasesize=$[10240 * 1024] --open-au-nr=4 10MiB 76.4M/s 5MiB 76.9M/s 2.5MiB 76.5M/s 1.25MiB 46.1M/s 640KiB 56.4M/s 320KiB 51M/s 160KiB 43.5M/s 80KiB 53.9M/s 40KiB 26.5M/s arnd@klappe2:~/git/flashbench$ sudo ./flashbench --open-au /dev/sdb7 --blocksize=$[5120 * 8] --erasesize=$[10240 * 1024] --open-au-nr=4 10MiB 78.4M/s 5MiB 78.5M/s 2.5MiB 54.5M/s 1.25MiB 58M/s 640KiB 54.7M/s 320KiB 44.7M/s 160KiB 44.4M/s 80KiB 41.1M/s 40KiB 30.5M/s arnd@klappe2:~/git/flashbench$ sudo ./flashbench --open-au /dev/sdb7 --blocksize=$[5120 * 8] --erasesize=$[10240 * 1024] --open-au-nr=4 10MiB 24.1M/s 5MiB 44.2M/s 2.5MiB 77.6M/s 1.25MiB 73.9M/s 640KiB 74.2M/s 320KiB 80.5M/s 160KiB 63.1M/s 80KiB 54.3M/s 40KiB 36.3M/s arnd@klappe2:~/git/flashbench$ sudo ./flashbench --open-au /dev/sdb7 --blocksize=$[5120 * 16] --erasesize=$[10240 * 1024] --open-au-nr=60 10MiB 64.4M/s 5MiB 70.2M/s 2.5MiB 78.4M/s 1.25MiB 71M/s 640KiB 60.4M/s 320KiB 69.9M/s arnd@klappe2:~/git/flashbench$ sudo ./flashbench --open-au /dev/sdb7 --blocksize=$[5120 * 16] --erasesize=$[10240 * 1024] --open-au-nr=130 10MiB 72.5M/s 5MiB 73.5M/s 2.5MiB 73.1M/s 1.25MiB 69M/s 640KiB 68.2M/s 320KiB 69.1M/s 160KiB 58.5M/s Absolutely no effects can be measured based on number of open erase blocks. Arnd

15 years, 1 month

1
0
0 0

Patriot Rage XT 16 GB (inconclusive)

by Arnd Bergmann

$ lsusb Bus 001 Device 024: ID 13fe:3800 Kingston Technology Company Inc. # The device can access 12 12 MB erase blocks: arnd@klappe2:~/git/flashbench$ sudo ./flashbench /dev/sdc --open-au --blocksize=$[3 * 8192] --erasesize=$[3 * 4096 * 1024] --open-au-nr=20 12MiB 12.9M/s 6MiB 10.8M/s 3MiB 7.49M/s 1.5MiB 4.66M/s ^C arnd@klappe2:~/git/flashbench$ sudo ./flashbench /dev/sdc --open-au --blocksize=$[3 * 8192] --erasesize=$[3 * 4096 * 1024] --open-au-nr=12 12MiB 10.2M/s 6MiB 13.8M/s 3MiB 13.5M/s 1.5MiB 13.2M/s 768KiB 13.1M/s 384KiB 12.8M/s 192KiB 12.7M/s 96KiB 15.3M/s ^C arnd@klappe2:~/git/flashbench$ sudo ./flashbench /dev/sdc --open-au --blocksize=$[3 * 8192] --erasesize=$[3 * 4096 * 1024] --open-au-nr=16 12MiB 14.2M/s 6MiB 11M/s 3MiB 7.64M/s 1.5MiB 4.78M/s 768KiB 2.69M/s 384KiB 1.45M/s 192KiB 767K/s ^C arnd@klappe2:~/git/flashbench$ sudo ./flashbench /dev/sdc --open-au --blocksize=$[3 * 8192] --erasesize=$[3 * 4096 * 1024] --open-au-nr=13 12MiB 12.9M/s 6MiB 11.5M/s 3MiB 8.35M/s 1.5MiB 5.13M/s 768KiB 2.89M/s 384KiB 1.54M/s 192KiB 758K/s 96KiB 732K/s ^C arnd@klappe2:~/git/flashbench$ sudo ./flashbench /dev/sdc --open-au --blocksize=$[3 * 8192] --erasesize=$[3 * 4096 * 1024] --open-au-nr=12 [sudo] password for arnd: 12MiB 16.2M/s 6MiB 13.2M/s 3MiB 13M/s 1.5MiB 13M/s 768KiB 13.1M/s 384KiB 12.5M/s 192KiB 12.5M/s 96KiB 14.9M/s 48KiB 9.55M/s # This also works with 8 MB units (properly aligned to 24 MB by modifying flashbench): $ sudo ./flashbench /dev/sdc --open-au --blocksize=$[2 * 8192] --erasesize=$[ 2 * 4096 * 1024] --open-au-nr=12 8MiB 12.8M/s 4MiB 11.8M/s 2MiB 10.3M/s 1MiB 16.6M/s 512KiB 17M/s 256KiB 15.6M/s 128KiB 13.6M/s 64KiB 18.4M/s 32KiB 11.9M/s 16KiB 3.41M/s arnd@klappe2:~/git/flashbench$ sudo ./flashbench /dev/sdc --open-au --blocksize=$[2 * 8192] --erasesize=$[ 2 * 4096 * 1024] --open-au-nr=13 8MiB 16.4M/s 4MiB 16.6M/s 2MiB 14.4M/s 1MiB 13.1M/s 512KiB 10.4M/s 256KiB 6.55M/s 128KiB 3.87M/s ^C $ sudo ./flashbench /dev/sdc --open-au --blocksize=$[2 * 8192] --erasesize=$[4 * 4096 * 1024] --open-au-nr=12 16MiB 13.4M/s 8MiB 13.4M/s 4MiB 11.6M/s 2MiB 14.4M/s 1MiB 16.4M/s 512KiB 16.8M/s 256KiB 15M/s The results are still not conlusive, especially after doing more tests with --random. Will have to revisit.

15 years, 1 month

1
0
0 0

16 GB Patriot xporter XT Boost

by Arnd Bergmann

# this is a 16 GB Patriot xporter XT Boost USB flash drive, lsusb claim # 2 GB, but that is understandable $ lsusb Bus 001 Device 023: ID 13fe:3100 Kingston Technology Company Inc. 2 GB USB stick # The erase block size is clearly 8 MB, page size is not clear from this: $ sudo ./flashbench /dev/sdc -a --blocksize=1024 align 1610612736 pre 545µs on 872µs post 721µs diff 239µs align 1073741824 pre 527µs on 811µs post 659µs diff 218µs align 805306368 pre 547µs on 818µs post 673µs diff 208µs align 536870912 pre 536µs on 814µs post 664µs diff 214µs align 402653184 pre 548µs on 819µs post 666µs diff 212µs align 268435456 pre 541µs on 822µs post 673µs diff 215µs align 201326592 pre 548µs on 818µs post 658µs diff 215µs align 134217728 pre 547µs on 822µs post 651µs diff 223µs align 100663296 pre 554µs on 822µs post 654µs diff 218µs align 67108864 pre 540µs on 823µs post 662µs diff 222µs align 50331648 pre 528µs on 817µs post 644µs diff 231µs align 33554432 pre 557µs on 815µs post 672µs diff 200µs align 25165824 pre 543µs on 821µs post 680µs diff 209µs align 16777216 pre 548µs on 822µs post 675µs diff 211µs align 12582912 pre 666µs on 688µs post 660µs diff 25.3µs align 8388608 pre 543µs on 819µs post 656µs diff 219µs align 6291456 pre 658µs on 697µs post 663µs diff 36.3µs align 4194304 pre 651µs on 697µs post 656µs diff 44.2µs align 3145728 pre 668µs on 692µs post 672µs diff 21.7µs align 2097152 pre 660µs on 688µs post 673µs diff 21.2µs align 1572864 pre 664µs on 695µs post 666µs diff 30µs align 1048576 pre 669µs on 696µs post 659µs diff 32.2µs align 786432 pre 664µs on 697µs post 652µs diff 39.6µs align 524288 pre 670µs on 698µs post 656µs diff 35.1µs align 393216 pre 664µs on 697µs post 651µs diff 40µs align 262144 pre 661µs on 696µs post 667µs diff 32.6µs align 196608 pre 665µs on 695µs post 663µs diff 30.8µs align 131072 pre 657µs on 680µs post 666µs diff 18.7µs align 98304 pre 670µs on 684µs post 669µs diff 14.3µs align 65536 pre 663µs on 684µs post 660µs diff 22.3µs align 49152 pre 653µs on 895µs post 668µs diff 235µs align 32768 pre 664µs on 684µs post 669µs diff 17.7µs align 24576 pre 667µs on 685µs post 667µs diff 18.1µs align 16384 pre 652µs on 894µs post 659µs diff 239µs align 12288 pre 665µs on 685µs post 659µs diff 23.1µs align 8192 pre 653µs on 681µs post 669µs diff 20.2µs align 6144 pre 656µs on 683µs post 667µs diff 21.9µs align 4096 pre 663µs on 676µs post 672µs diff 8.79µs align 3072 pre 670µs on 670µs post 665µs diff 2.62µs align 2048 pre 661µs on 677µs post 658µs diff 17.1µs # Optimum I/O size is 64 KB, page size looks like 32 KB effective sudo ./flashbench --erasesize=$[8*1024*1024] --open-au --open-au-nr=3 /dev/sdc --blocksize=4096 8MiB 15M/s 4MiB 14.9M/s 2MiB 14.9M/s 1MiB 15.4M/s 512KiB 15.7M/s 256KiB 13.1M/s 128KiB 13.1M/s 64KiB 16.4M/s 32KiB 10.9M/s 16KiB 3.12M/s 8KiB 1.67M/s 4KiB 861K/s # six erase blocks is still fine $ sudo ./flashbench --erasesize=$[8*1024*1024] --open-au --open-au-nr=6 /dev/sdc 8MiB 15.3M/s 4MiB 14.6M/s 2MiB 14.2M/s 1MiB 14.9M/s 512KiB 15.4M/s 256KiB 13.5M/s 128KiB 12.3M/s 64KiB 16M/s 32KiB 10.6M/s 16KiB 3.16M/s # ten erase block not so, gradual decline hints at log-structured writes: $ sudo ./flashbench --erasesize=$[8*1024*1024] --open-au --open-au-nr=10 /dev/sdc 8MiB 14.8M/s 4MiB 12.9M/s 2MiB 10.5M/s 1MiB 6.79M/s 512KiB 4.25M/s ^C # get the stick into fast case again, by writing to it with six blocks: $ sudo ./flashbench --erasesize=$[8*1024*1024] --open-au --open-au-nr=6 /dev/sdc --blocksize=$[4 * 1024 * 1024] 8MiB 12.8M/s 4MiB 12.6M/s $ sudo ./flashbench --erasesize=$[8*1024*1024] --open-au --open-au-nr=6 /dev/sdc --blocksize=$[4 * 1024 * 1024] 8MiB 14.6M/s 4MiB 14.3M/s # seven block still ok: $ sudo ./flashbench --erasesize=$[8*1024*1024] --open-au --open-au-nr=7 /dev/sdc --blocksize=$[1 * 1024 * 1024] 8MiB 14.3M/s 4MiB 14.4M/s 2MiB 14M/s 1MiB 14.5M/s # eight blocks ok: $ sudo ./flashbench --erasesize=$[8*1024*1024] --open-au --open-au-nr=8 /dev/sdc --blocksize=$[32 * 1024] 8MiB 14.7M/s 4MiB 14.1M/s 2MiB 14.5M/s 1MiB 14.9M/s 512KiB 15M/s 256KiB 13.3M/s 128KiB 12M/s 64KiB 16.4M/s 32KiB 10.4M/s # nine blocks is where we hit the wall, though 16 KB and smaller is ok: $ sudo ./flashbench --erasesize=$[8*1024*1024] --open-au --open-au-nr=9 /dev/sdc --blocksize=$[32 * 1024] 8MiB 14.7M/s 4MiB 13.9M/s 2MiB 12.3M/s 1MiB 10M/s 512KiB 7.11M/s 256KiB 4.8M/s 128KiB 2.51M/s 64KiB 1.44M/s 32KiB 726K/s 16KiB 3.02M/s 8KiB 1.51M/s 4KiB 782K/s # resetting the device by writing 8 blocks again: $ sudo ./flashbench --erasesize=$[8*1024*1024] --open-au --open-au-nr=8 /dev/sdc --blocksize=$[4 * 1024 * 1024] 8MiB 14.6M/s 4MiB 14.6M/s # trying eight blocks with random access, the device copes ok, but not # perfect, another indication for log-structured: $ sudo ./flashbench --erasesize=$[8*1024*1024] --open-au --open-au-nr=8 /dev/sdc --blocksize=$[4 * 1024] --random 8MiB 15M/s 4MiB 11.6M/s 2MiB 8.3M/s 1MiB 7.84M/s 512KiB 5.3M/s 256KiB 6.53M/s 128KiB 4.79M/s 64KiB 7.37M/s 32KiB 6.69M/s 16KiB 3.08M/s 8KiB 1.55M/s 4KiB 787K/s # nine blocks random I/O: somewhat worse than 9 blocks linear, 16 KB # blocks are still as fast as always $ sudo ./flashbench --erasesize=$[8*1024*1024] --open-au --open-au-nr=9 /dev/sdc --blocksize=$[4 * 1024] --random 8MiB 14.6M/s 4MiB 11.3M/s 2MiB 7.05M/s 1MiB 4.74M/s 512KiB 3.21M/s 256KiB 1.8M/s 128KiB 1.13M/s 64KiB 694K/s 32KiB 376K/s 16KiB 2.96M/s 8KiB 1.45M/s 4KiB 739K/s # Looking for FAT optimizations, nothing there: $ sudo ./flashbench --erasesize=$[8*1024*1024] --findfat --fat-nr=4 /dev/sdc --blocksize=$[4 * 1024] --random 8MiB 15.2M/s 16.3M/s 14.3M/s 14.1M/s 4MiB 11.4M/s 11.4M/s 11.7M/s 12M/s 2MiB 8.32M/s 8.3M/s 8.32M/s 8.41M/s 1MiB 7.93M/s 7.93M/s 7.93M/s 7.89M/s 512KiB 5.34M/s 5.32M/s 5.33M/s 5.34M/s 256KiB 6.6M/s 6.51M/s 6.6M/s 6.59M/s 128KiB 4.85M/s 4.86M/s 4.85M/s 4.85M/s 64KiB 7.48M/s 7.51M/s 7.52M/s 7.48M/s 32KiB 6.79M/s 6.91M/s 6.96M/s 6.97M/s 16KiB 3.18M/s 3.19M/s 3.2M/s 3.2M/s 8KiB 1.61M/s 1.62M/s 1.62M/s 1.61M/s 4KiB 820K/s 819K/s 812K/s 818K/s Verdict: Decent algorithm, the stick assumes random writes when accessed with 16 KB blocks but linear writes for anything larger. Linear write performance good, even across many erase blocks.

15 years, 1 month

1
0
0 0

Re: [Flashbench] USB Stick: Corsair Flash Voyager GT

by Arnd Bergmann

On Thursday 24 March 2011, Michael Monnerie wrote: > We could speak german, I guess? Yes, but I'd prefer to keep the discussion on the mailing list if interesting results come up. > On Donnerstag, 24. März 2011 Arnd Bergmann wrote: > > > > Are these results reproducible? It's not at all clear to me that the > > erase size is really 4 MB, it could also be 1 MB for instance, > > especially if your stick is from before 2010. You can rerun the > > command with --count=100 or more, or with larger block sizes to get > > a better feeling. > > # ./flashbench -a /dev/sde --blocksize=4096 --count=100 > sched_setscheduler: Operation not permitted > align 536870912 pre 703µs on 798µs post 666µs diff 114µs > align 268435456 pre 700µs on 753µs post 681µs diff 62.8µs > align 134217728 pre 786µs on 783µs post 645µs diff 67.4µs > align 67108864 pre 723µs on 772µs post 675µs diff 73.3µs > align 33554432 pre 701µs on 762µs post 674µs diff 74.4µs > align 16777216 pre 701µs on 741µs post 685µs diff 48.3µs > align 8388608 pre 695µs on 749µs post 668µs diff 66.8µs > align 4194304 pre 706µs on 791µs post 671µs diff 102µs > align 2097152 pre 674µs on 707µs post 692µs diff 23.9µs > align 1048576 pre 683µs on 726µs post 701µs diff 34.3µs > align 524288 pre 671µs on 726µs post 717µs diff 32.3µs > align 262144 pre 698µs on 713µs post 687µs diff 20.7µs > align 131072 pre 682µs on 740µs post 704µs diff 46.9µs > align 65536 pre 687µs on 727µs post 697µs diff 35.1µs > align 32768 pre 712µs on 722µs post 692µs diff 19.9µs > align 16384 pre 667µs on 699µs post 674µs diff 27.9µs > align 8192 pre 702µs on 770µs post 686µs diff 75.8µs Ok, this is much clearer: I'm pretty sure that it's either 4 MB or 8 MB, based on this result. Note how all diff values below 4 MB are smaller than all diff values above 4 MB. Something strange is going at at 4 MB, so it's not clear whether it belongs to the upper or lower half. > # ./flashbench -a /dev/sde --blocksize=8192 --count=50 > sched_setscheduler: Operation not permitted > align 536870912 pre 879µs on 899µs post 858µs diff 30.9µs > align 268435456 pre 847µs on 906µs post 842µs diff 61.1µs > align 134217728 pre 996µs on 968µs post 836µs diff 52µs > align 67108864 pre 811µs on 839µs post 757µs diff 55µs > align 33554432 pre 871µs on 908µs post 847µs diff 48.7µs > align 16777216 pre 854µs on 914µs post 818µs diff 78µs > align 8388608 pre 851µs on 908µs post 850µs diff 58.2µs > align 4194304 pre 892µs on 880µs post 908µs diff -20511n > align 2097152 pre 828µs on 849µs post 885µs diff -7708ns > align 1048576 pre 874µs on 886µs post 862µs diff 17.9µs > align 524288 pre 852µs on 869µs post 915µs diff -15025n > align 262144 pre 844µs on 895µs post 940µs diff 2.73µs > align 131072 pre 848µs on 884µs post 907µs diff 6.1µs > align 65536 pre 837µs on 857µs post 840µs diff 18µs > align 32768 pre 831µs on 864µs post 861µs diff 17.7µs > align 16384 pre 855µs on 841µs post 826µs diff 201ns > > Could it be some linux cache is in the way? No, all I/O is done with O_DIRECT, which completely bypasses the page cache. In theory, there could be a cache on the stick, but that's rarely the case. The USB protocol adds some jitter here, and for some reason you cannot use real-time scheduling, which makes the results less accurate. > > Another helpful indication would be the output of 'fdisk -lu > > /dev/sde': It will show the start of the partition and the size of > > the drive, both should be a multiple of the erase block size. > > # fdisk -lu /dev/sde > > Disk /dev/sde: 16.2 GB, 16240345088 bytes > 255 heads, 63 sectors/track, 1974 cylinders, total 31719424 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: 0x925df597 Ok, 16240345088 bytes is 121 times 128 MiB, so it's certainly not using 4128 KiB blocks or some other strange unit. > Device Boot Start End Blocks Id System > /dev/sde1 63 31712309 15856123+ 7 HPFS/NTFS/exFAT > > I didn't use sde1 but sde for the tests, so it shouldn't have a meaning. > I'll change the partition to start at 2048 or whatever I find the erasesize to be. Be careful here. The original FAT layout is typically made specifically for this stick, so it's probably a good idea to make a backup of the first few blocks. > > Finally, a third way is to look at a gnuplot chart on the output of > > > > flashbench -s -o output.plot /dev/sde --scatter-order=10 > > --scatter-span=2 --blocksize=8192 gnuplot -p -e 'plot "output.plot"' > > > > On many drives, the boundaries between erase blocks show up as spikes > > in the chart. > > Phew, two lines, more or less, and spikes everwhere (see attached). Right, nothing to see here yet. It only shows the first 8 MB, so if the spike is every 8 MB, it won't show up here. Use --scatter-order=12 to show more. Also, the jitter from the USB protocol may hide some details, which might get better with a larger --count= value, but that would make the test run much longer. It's probably good enough to assume that the size is actually 8 MB or 4 MB, and keep going from there. > > Also, please post the USB ID and name output from 'lsusb' for > > reference. > > # lsusb -v > Bus 001 Device 005: ID 1b1c:1a90 Ok. > Now with 16 I got it slower, still no visible border: > > # ./flashbench -O --erasesize=$[4 * 1024 * 1024] --blocksize=$[64 * 1024] /dev/sde --open-au-nr=4 > sched_setscheduler: Operation not permitted > 4MiB 7.3M/s > 2MiB 11.2M/s > 1MiB 15.7M/s > 512KiB 19.2M/s > 256KiB 14.5M/s > 128KiB 12.8M/s > 64KiB 18.8M/s > # ./flashbench -O --erasesize=$[4 * 1024 * 1024] --blocksize=$[64 * 1024] /dev/sde --open-au-nr=16 > sched_setscheduler: Operation not permitted > 4MiB 9.77M/s > 2MiB 3.41M/s > 1MiB 7.38M/s > 512KiB 5.69M/s > ^C (took too long) If it takes too long, that's a good indication that something interesting is happening ;-) > Seems that stick wants to hide it's internals? Not completely unusual, but somewhat harder than most. I've committed some updates now that might help make the --open-au results a bit clearer, and faster. What I would recommend now is to update to the latest git version (just uploaded), and then try increasing numbers of --open-au-nr= with 4 MB erasesize, until you hit the cutoff. Try the same with --random, for the last fast one and the first slow one: ./flashbench -O --erasesize=$[4 * 1024 * 1024] /dev/sde --open-au-nr=5 ./flashbench -O --erasesize=$[4 * 1024 * 1024] /dev/sde --open-au-nr=6 ./flashbench -O --erasesize=$[4 * 1024 * 1024] /dev/sde --open-au-nr=7 ... ./flashbench -O --erasesize=$[4 * 1024 * 1024] /dev/sde --open-au-nr=N => N is the number of 4 MB blocks that can not be handled ./flashbench -O --erasesize=$[4 * 1024 * 1024] /dev/sde --open-au-nr=(N-1) --random ./flashbench -O --erasesize=$[4 * 1024 * 1024] /dev/sde --open-au-nr=N --random => Verify that the (N-1) --random case is still fast ./flashbench -O --erasesize=$[8 * 1024 * 1024] /dev/sde --open-au-nr=((N-1)/2) --random ./flashbench -O --erasesize=$[8 * 1024 * 1024] /dev/sde --open-au-nr=(N-1) --random ./flashbench -O --erasesize=$[8 * 1024 * 1024] /dev/sde --open-au-nr=(N-1) --random Arnd

15 years, 1 month

2
11
0 0

Re: [Flashbench] IPPBX For Distributor

by Alex

Dear Product Manager From google, we get to know that you focus on communication pruducts with high reputation.We are professional IP-PBX,GSM gateway manufacturer with high-quality and competitive price. MyPBX STD V4 is the newest version that supports PSTN,GSM,VoIP trunks with FXS / FXO / PRI / BRI (ISDN) ports. It is embedded hybrid IP-PBX which caters for the small businesses. Please feel free to contact me to get further information to open our cooperation relationship in 2011. Thanks&Best Regards Alex Yeastar Technology Co.,Ltd Web: www.yeastar.com MSN: hqy(a)yeastar.com Skype: Yeastar.hqy Tel: +86 592 5503309 Ext.8026 Add: 202,No.23 Wanghai Road, 2nd Software Park, Xiamen, China --------------------------------------------------------------------------------

15 years, 1 month

1
0
0 0

Better Air Price to Brazil +ACI- Sam BSI-THREE+ACI-

by Sam Peng / BSI-SZX

Dear Sir & Madam, Have a nice day ! This is Sam Peng from BSI (BEST SERVICES INT'L FREIGHT LTD) in China.we are as agent of Lufthansa Cargo / LH ; Lan Chile / LAN ; Bringer Air Cargo / E6 in China. We specialize in Air freight / Sea shipping to Brazil in China. It's my pleasure to send the the below air price for your reference. Shenzhen / Guangzhou / Dongguan ; China to San Paulo ; Brazil : 1) A/Freight : USD7.10/KG (more than 1000kgs) 2) Frequency : Fri 3) Airways : Emirates Skycargo Airlines / EK 4) Transit Time: 3~4days 5) Departure : from HongKong 6) Flight Route : HongKong--Dubai--San Paulo ***we can help you to pick up the goods from any city in China to Brazil*** Our Promise: -- Closely keep in touch with you & Supplier. -- Keep working with you in the same time as you to know all update information for your order in time. -- Combine the shipment from different supplier and make the combine packing list & commercial invoice to one set original document -- Assist you to check new supplier's company credit. -- Ensure Cargo to be loaded at the soonest. -- Ensure to provide best logsitics project to save your purchase cost. -- Keep update the cargo tracking information for you. Our Certifications: -- IATA: International Air Transport Association. -- NVOCC: Non Vessel Operating Common Carrier. -- WCA: Member of World Cargo Alliance. -- CATA: China Civil Air Transport Sales (Class A) Agency Services. I expect you to try our services for your air cargo to Brazil. I'm sure that our sincerely services can make you feel satisfied.Please don't hesitate to contact with me in any time. B. regards! Sam Peng Sales Dept BEST SERVICES INTERNATIONAL FREIGHT LTD Rm.B13-19, 10/F, Regalia Place, Jiabin Rd, Shenzhen, China. Tel : 86-755-25904212 Fax : 86-755-25901937 / 25901911 Cell Phone : +86-13760303532 E-mail : sales4.szx(a)bsigroup.cc MSN : sampeng8210(a)hotmail.com Skype : sampeng821007 Website: http://www.bestservices.com.cn IATA: 08-3 1624 CATA: ZN30165 FMC: 022856 NVOCC: MOC-NV03395 BSI Offices : Shenzhen, HongKong, Guangzhou, Shanghai, Ningbo, Xiamen, Dongguan, Zhongshan, Jiangmen. BSI representative offices : Qingdao, Dalian, Tianjin, Beijing, Lianyungang, Yantai, Fuzhou, Zhuhai, Shantou, Chongqing, Chengdu and others. All transactions are subject to the Company's Standard Trading Conditions ( copy is available upon request ), which in certain circumstances limit or exempt the Company's liability.

15 years, 1 month

1
0
0 0

USB Stick: Corsair Flash Voyager GT

by Michael Monnerie

I can't interpret the numbers for the AUs, can you help me? # ./flashbench -a /dev/sde --blocksize=1024 sched_setscheduler: Operation not permitted align 536870912 pre 745µs on 756µs post 696µs diff 36.2µs align 268435456 pre 698µs on 882µs post 670µs diff 198µs align 134217728 pre 722µs on 899µs post 715µs diff 180µs align 67108864 pre 720µs on 712µs post 669µs diff 17.1µs align 33554432 pre 750µs on 765µs post 639µs diff 70.1µs align 16777216 pre 727µs on 777µs post 684µs diff 71.8µs align 8388608 pre 691µs on 727µs post 646µs diff 58.3µs align 4194304 pre 689µs on 769µs post 675µs diff 87.3µs align 2097152 pre 697µs on 879µs post 715µs diff 173µs align 1048576 pre 716µs on 899µs post 789µs diff 147µs align 524288 pre 659µs on 775µs post 724µs diff 83.4µs align 262144 pre 657µs on 735µs post 685µs diff 63.6µs align 131072 pre 656µs on 706µs post 756µs diff -248ns align 65536 pre 655µs on 715µs post 650µs diff 62.3µs align 32768 pre 732µs on 792µs post 743µs diff 54.1µs align 16384 pre 685µs on 808µs post 767µs diff 82.6µs align 8192 pre 732µs on 764µs post 697µs diff 49.8µs align 4096 pre 661µs on 692µs post 681µs diff 20.7µs align 2048 pre 671µs on 657µs post 653µs diff -5465ns # ./flashbench -O --erasesize=$[4 * 1024 * 1024] --blocksize=$[256 * 1024] /dev/sde --open-au-nr=2 sched_setscheduler: Operation not permitted 4MiB 6.69M/s 2MiB 11.1M/s 1MiB 13.2M/s 512KiB 14.4M/s 256KiB 14.6M/s # ./flashbench -O --erasesize=$[4 * 1024 * 1024] --blocksize=$[256 * 1024] /dev/sde --open-au-nr=3 sched_setscheduler: Operation not permitted 4MiB 6.68M/s 2MiB 11.2M/s 1MiB 12.9M/s 512KiB 14.5M/s 256KiB 14.8M/s # ./flashbench -O --erasesize=$[4 * 1024 * 1024] --blocksize=$[256 * 1024] /dev/sde --open-au-nr=4 sched_setscheduler: Operation not permitted 4MiB 6.8M/s 2MiB 10.9M/s 1MiB 13M/s 512KiB 14.4M/s 256KiB 14.6M/s # ./flashbench -O --erasesize=$[4 * 1024 * 1024] --blocksize=$[256 * 1024] /dev/sde --open-au-nr=6 sched_setscheduler: Operation not permitted 4MiB 7.45M/s 2MiB 9.24M/s 1MiB 16.4M/s 512KiB 17.4M/s 256KiB 7.98M/s -- 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/

15 years, 1 month

2
1
0 0

You could find the competitive price mobile phone without B2B

by Picasa Web Albums

Dear Sir or Madam, Glad to hear that you're on the market for mobile phone. We, Wei Wan Technology are a professional manufacturer for mobile phone. Dual Sim card and Triple Sim card etc Please contact me if any questions. Sincerely hope to find a way to cooperate with your esteemed company! Thanks & best regards Juce E-mail: elink(a)vip.188.com Factory Address: 5/F, Building 21, ChenTian Industrial Park, BaoTian 2nd Road, Xixiang Town, Bao'anDistrict, Shenzhen, GuangDong Province, China

15 years, 1 month

1
0
0 0

Kingston microSD 2 GB (2010 model)

by Arnd Bergmann

$ head /sys/block/mmcblk0/device/{c*,scr,*rev,*id,serial,*size,name,date} ==> /sys/block/mmcblk0/device/cid <== 02544d534130324705200a985700a700 ==> /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 <== 02544d534130324705200a985700a700 ==> /sys/block/mmcblk0/device/manfid <== 0x000002 ==> /sys/block/mmcblk0/device/oemid <== 0x544d ==> /sys/block/mmcblk0/device/serial <== 0x200a9857 ==> /sys/block/mmcblk0/device/erase_size <== 512 ==> /sys/block/mmcblk0/device/preferred_erase_size <== 4194304 ==> /sys/block/mmcblk0/device/name <== SA02G ==> /sys/block/mmcblk0/device/date <== 07/2010 $ sudo ./flashbench -a /dev/mmcblk0 --blocksize 1024 --count=50 [sudo] password for arnd: align 268435456 pre 1.45ms on 2.14ms post 1.19ms diff 819µs align 134217728 pre 1.77ms on 2.39ms post 1.26ms diff 874µs align 67108864 pre 1.78ms on 2.16ms post 1.19ms diff 677µs align 33554432 pre 1.77ms on 2.17ms post 1.21ms diff 680µs align 16777216 pre 1.58ms on 2.18ms post 1.21ms diff 788µs align 8388608 pre 1.26ms on 2.13ms post 1.21ms diff 900µs align 4194304 pre 1.3ms on 2.16ms post 1.21ms diff 911µs align 2097152 pre 1.5ms on 2.16ms post 1.18ms diff 822µs align 1048576 pre 1.21ms on 1.41ms post 1.24ms diff 186µs align 524288 pre 1.21ms on 1.27ms post 1.21ms diff 60.4µs align 262144 pre 1.21ms on 1.27ms post 1.21ms diff 59.3µs align 131072 pre 1.21ms on 1.27ms post 1.21ms diff 59.2µs align 65536 pre 1.21ms on 1.27ms post 1.21ms diff 59.2µs align 32768 pre 1.21ms on 1.27ms post 1.21ms diff 60.3µs align 16384 pre 1.22ms on 1.27ms post 1.21ms diff 57.8µs align 8192 pre 1.21ms on 1.28ms post 1.21ms diff 61.7µs align 4096 pre 1.21ms on 1.26ms post 1.21ms diff 41.6µs align 2048 pre 1.21ms on 1.26ms post 1.21ms diff 41.1µs $ sudo ./flashbench --findfat --fat-nr=4 /dev/mmcblk0 --blocksize=1024 --erasesize=$[2* 1024 * 1024] 2MiB 2.33M/s 4.67M/s 9.32M/s 9.57M/s 1MiB 3.4M/s 9.49M/s 9.31M/s 9.59M/s 512KiB 3.41M/s 9.54M/s 9.57M/s 9.51M/s 256KiB 4.95M/s 9.73M/s 9.63M/s 9.62M/s 128KiB 5.79M/s 9.76M/s 9.64M/s 9.72M/s 64KiB 6.04M/s 9.59M/s 9.9M/s 9.85M/s 32KiB 4.35M/s 8.92M/s 8.82M/s 8.87M/s 16KiB 2.98M/s 7.23M/s 7.25M/s 7.31M/s 8KiB 1.68M/s 4.67M/s 4.59M/s 4.62M/s 4KiB 847K/s 1.45M/s 1.56M/s 1.55M/s 2KiB 431K/s 726K/s 715K/s 736K/s 1KiB 218K/s 137K/s 137K/s 126K/s $ sudo ./flashbench --findfat --fat-nr=4 /dev/mmcblk0 --blocksize=4096 --erasesize=$[2* 1024 * 1024] --random 2MiB 2.3M/s 9.48M/s 9.29M/s 9.22M/s 1MiB 3.42M/s 5.89M/s 3.01M/s 3M/s 512KiB 4.51M/s 2.03M/s 1.85M/s 1.82M/s 256KiB 4.89M/s 1.32M/s 1.31M/s 1.31M/s 128KiB 4.93M/s 696K/s 696K/s 694K/s 64KiB 5.58M/s 850K/s 853K/s 849K/s 32KiB 4.56M/s 325K/s 326K/s 327K/s ^C $ sudo ./flashbench --open-au --open-au-nr=1 /dev/mmcblk0 --erasesize=$[2 * 1024 * 1024] --blocksize=1024 2MiB 8.25M/s 1MiB 2.65M/s 512KiB 2.67M/s 256KiB 2.67M/s 128KiB 4.16M/s 64KiB 9.48M/s 32KiB 8.56M/s 16KiB 6.59M/s 8KiB 4M/s 4KiB 1.32M/s 2KiB 544K/s 1KiB 14.1K/s (!!!) $ sudo ./flashbench --open-au --open-au-nr=1 /dev/mmcblk0 --erasesize=$[4 * 1024 * 1024] --blocksize=1024 4MiB 9.37M/s 2MiB 4.17M/s 1MiB 4.17M/s 512KiB 4.17M/s 256KiB 4.17M/s 128KiB 5.8M/s 64KiB 9.54M/s 32KiB 8.47M/s 16KiB 6.5M/s 8KiB 3.94M/s 4KiB 1.26M/s 2KiB 538K/s ^C $ sudo ./flashbench --open-au --open-au-nr=2 /dev/mmcblk0 --erasesize=$[2 * 1024 * 1024] --blocksize=1024 2MiB 5.82M/s 1MiB 3.62M/s 512KiB 1.43M/s 256KiB 658K/s 128KiB 318K/s 64KiB 232K/s ^C $ sudo ./flashbench --open-au --open-au-nr=2 /dev/mmcblk0 --erasesize=$[4 * 1024 * 1024] --blocksize=1024 4MiB 8.52M/s 2MiB 5.78M/s 1MiB 2.79M/s 512KiB 1.34M/s 256KiB 639K/s 128KiB 314K/s 64KiB 233K/s 32KiB 116K/s ^C

15 years, 1 month

1
0
0 0

Sandisk white label 2GB (from Versatile Express board)

by Arnd Bergmann

This is the first Sandisk Card that I've seen that does not have any optimizations for random access. It's particularly bad since this card was specifically shipped with a Linux box for the purpose of installing Debian on it. The label says "15 MB/s read, 7 MB/s write". Arnd --- $ head /sys/block/mmcblk0/device/{c*,scr,*rev,*id,serial,*size} ==> /sys/block/mmcblk0/device/cid <== 035344534430324780019b8975009b00 ==> /sys/block/mmcblk0/device/csd <== 002600325f5a83aefefbcfff92804000 ==> /sys/block/mmcblk0/device/scr <== 0225000000000000 ==> /sys/block/mmcblk0/device/fwrev <== 0x0 ==> /sys/block/mmcblk0/device/hwrev <== 0x8 ==> /sys/block/mmcblk0/device/cid <== 035344534430324780019b8975009b00 ==> /sys/block/mmcblk0/device/manfid <== 0x000003 ==> /sys/block/mmcblk0/device/oemid <== 0x5344 ==> /sys/block/mmcblk0/device/serial <== 0x019b8975 ==> /sys/block/mmcblk0/device/erase_size <== 512 ==> /sys/block/mmcblk0/device/preferred_erase_size <== 4194304 $ sudo ./flashbench -a /dev/mmcblk0 --blocksize 1024 --count=50 align 268435456 pre 896µs on 1.14ms post 697µs diff 345µs align 134217728 pre 671µs on 983µs post 641µs diff 327µs align 67108864 pre 748µs on 1.02ms post 615µs diff 336µs align 33554432 pre 615µs on 699µs post 582µs diff 99.9µs align 16777216 pre 671µs on 807µs post 634µs diff 154µs align 8388608 pre 759µs on 822µs post 698µs diff 93.2µs align 4194304 pre 716µs on 822µs post 692µs diff 118µs align 2097152 pre 745µs on 824µs post 701µs diff 101µs align 1048576 pre 633µs on 662µs post 669µs diff 11.5µs align 524288 pre 636µs on 668µs post 656µs diff 22µs align 262144 pre 630µs on 673µs post 657µs diff 29.6µs align 131072 pre 629µs on 673µs post 661µs diff 28.4µs align 65536 pre 640µs on 670µs post 665µs diff 17.2µs align 32768 pre 629µs on 671µs post 667µs diff 23.1µs align 16384 pre 618µs on 664µs post 658µs diff 25.5µs align 8192 pre 643µs on 643µs post 637µs diff 3.5µs align 4096 pre 657µs on 661µs post 645µs diff 10.1µs align 2048 pre 661µs on 669µs post 656µs diff 10.8µs $ sudo ./flashbench --open-au --open-au-nr=1 /dev/mmcblk0 --erasesize=$[2 * 1024 * 1024] --blocksize=1024 --random 2MiB 11.1M/s 1MiB 3.72M/s 512KiB 3.26M/s 256KiB 1.38M/s 128KiB 1.89M/s 64KiB 1.43M/s 32KiB 918K/s 16KiB 350K/s 8KiB 1.16M/s 4KiB 542K/s 2KiB 254K/s 1KiB 121K/s sudo ./flashbench --open-au --open-au-nr=1 /dev/mmcblk0 --erasesize=$[2 * 1024 * 1024] --blocksize=1024 2MiB 6.91M/s 1MiB 6.1M/s 512KiB 6.06M/s 256KiB 6.11M/s 128KiB 6.39M/s 64KiB 12.1M/s 32KiB 9.97M/s 16KiB 6.74M/s 8KiB 3.66M/s 4KiB 2.04M/s 2KiB 945K/s 1KiB 461K/s $ sudo ./flashbench --open-au --open-au-nr=6 /dev/mmcblk0 --erasesize=$[2 * 1024 * 1024] --blocksize=1024 --random 2MiB 11.5M/s 1MiB 10.1M/s 512KiB 7.91M/s 256KiB 3M/s 128KiB 2.2M/s 64KiB 1.21M/s 32KiB 645K/s 16KiB 310K/s 8KiB 176K/s 4KiB 86.8K/s ^C $ sudo ./flashbench --open-au --open-au-nr=6 /dev/mmcblk0 --erasesize=$[2 * 1024 * 1024] --blocksize=1024 2MiB 9.79M/s 1MiB 11.7M/s 512KiB 11.9M/s 256KiB 11.8M/s 128KiB 11.7M/s 64KiB 11.8M/s 32KiB 9.77M/s 16KiB 6.64M/s 8KiB 4.13M/s 4KiB 2M/s 2KiB 929K/s 1KiB 445K/s $ sudo ./flashbench --open-au --open-au-nr=7 /dev/mmcblk0 --erasesize=$[2 * 1024 * 1024] --blocksize=1024 --random 2MiB 12M/s 1MiB 6.1M/s 512KiB 3.23M/s 256KiB 1.55M/s 128KiB 772K/s 64KiB 384K/s 32KiB 192K/s 16KiB 95.8K/s 8KiB 47.7K/s ^C $ sudo ./flashbench --open-au --open-au-nr=7 /dev/mmcblk0 --erasesize=$[2 * 1024 * 1024] --blocksize=1024 2MiB 11M/s 1MiB 7.75M/s 512KiB 3.2M/s 256KiB 1.54M/s 128KiB 768K/s 64KiB 384K/s ^C $ sudo ./flashbench --findfat --fat-nr=4 /dev/mmcblk0 --blocksize=1024 --erasesize=$[2* 1024 * 1024] --random 2MiB 11.9M/s 12M/s 11.7M/s 12M/s 1MiB 5.54M/s 5.69M/s 5.11M/s 7.73M/s 512KiB 7.08M/s 4.65M/s 4.35M/s 4.35M/s 256KiB 6.98M/s 2.26M/s 2.27M/s 2.26M/s 128KiB 7.98M/s 5.47M/s 5.48M/s 5.47M/s 64KiB 8.4M/s 5.62M/s 5.57M/s 5.45M/s 32KiB 7.16M/s 4.89M/s 4.94M/s 4.83M/s 16KiB 5.3M/s 2.32M/s 2.32M/s 2.27M/s 8KiB 2.31M/s 2.33M/s 2.33M/s 2.33M/s 4KiB 943K/s 945K/s 942K/s 944K/s 2KiB 411K/s 408K/s 410K/s 410K/s 1KiB 190K/s 187K/s 192K/s 192K/s

15 years, 1 month

1
0
0 0

Results for danelec 16G class 4 micro SD card manfid 0x000002 oemid 0x544d

by Tim Small

root@netboot:~# (cd /sys/block/mmcblk0/device/ ; for i in * ; do if [ -f $i ] ; then echo -n "$i: " ; cat $i ; fi ; done) cid: 02544d534431364760dcbf359a00a800 csd: 400e00325b590000777f7f800a400000 date: 08/2010 fwrev: 0x0 hwrev: 0x6 manfid: 0x000002 name: SD16G oemid: 0x544d scr: 02b5800026027102 serial: 0xdcbf359a type: SD uevent: DRIVER=mmcblk MMC_TYPE=SD MMC_NAME=SD16G MODALIAS=mmc:block root@netboot:~# ~/flashbench/flashbench -a /dev/mmcblk0 --blocksize=1024 align 536870912 pre 838µs on 1.12ms post 960µs diff 222µs align 268435456 pre 859µs on 1.09ms post 955µs diff 186µs align 134217728 pre 860µs on 1.1ms post 957µs diff 196µs align 67108864 pre 861µs on 1.11ms post 957µs diff 203µs align 33554432 pre 860µs on 1.11ms post 960µs diff 197µs align 16777216 pre 861µs on 1.11ms post 953µs diff 203µs align 8388608 pre 859µs on 1.11ms post 961µs diff 198µs align 4194304 pre 863µs on 1.1ms post 925µs diff 211µs align 2097152 pre 862µs on 1.11ms post 965µs diff 199µs align 1048576 pre 954µs on 978µs post 970µs diff 15.8µs align 524288 pre 951µs on 977µs post 973µs diff 14.8µs align 262144 pre 947µs on 977µs post 967µs diff 19.8µs align 131072 pre 947µs on 983µs post 969µs diff 25.5µs align 65536 pre 951µs on 981µs post 956µs diff 26.9µs align 32768 pre 948µs on 977µs post 963µs diff 21.6µs align 16384 pre 950µs on 978µs post 950µs diff 27.7µs align 8192 pre 963µs on 960µs post 963µs diff -3106ns align 4096 pre 962µs on 969µs post 956µs diff 10.1µs align 2048 pre 963µs on 953µs post 951µs diff -3893ns >From which I guess 2M erase block size. Not sure how to interpret the last 4 rows. Only 1 open allocation unit by the look of the following :-( root@netboot:~# ~/flashbench/flashbench --open-au --open-au-nr=1 --erasesize=$[2 * 1024 * 1024] --blocksize=$[256 * 1024] /dev/mmcblk0 2MiB 3.68M/s 1MiB 3.16M/s 512KiB 3.06M/s 256KiB 3.33M/s root@netboot:~# ~/flashbench/flashbench --open-au --open-au-nr=2 --erasesize=$[2 * 1024 * 1024] --blocksize=$[256 * 1024] /dev/mmcblk0 2MiB 3.09M/s 1MiB 2.01M/s 512KiB 1.43M/s 256KiB 618K/s root@netboot:~# ~/flashbench/flashbench -f /dev/mmcblk04MiB 2.51M/s 2.46M/s 3.73M/s 3.72M/s 3.72M/s 3.72M/s 2MiB 3.7M/s 2.46M/s 3.73M/s 3.73M/s 3.72M/s 3.72M/s 1MiB 3.7M/s 2.46M/s 3.73M/s 3.74M/s 3.72M/s 3.72M/s 512KiB 3.7M/s 2.45M/s 3.72M/s 3.7M/s 3.73M/s 3.73M/s 256KiB 3.71M/s 2.63M/s 3.72M/s 3.73M/s 3.72M/s 3.72M/s 128KiB 3.71M/s 2.82M/s 3.73M/s 3.72M/s 3.72M/s 3.72M/s 64KiB 3.71M/s 3.01M/s 3.72M/s 3.72M/s 3.72M/s 3.72M/s 32KiB 3.58M/s 2.73M/s 3.57M/s 3.57M/s 3.58M/s 3.57M/s 16KiB 2.95M/s 2.25M/s 2.94M/s 2.95M/s 2.94M/s 2.95M/s The --scatter-order=<n> --scatter-span=<m> arguments are not really documented, so I didn't know how I should be using them, so I didn't. There are some strange outliers on the plot, most of which seem to end up consistently in the same place. This card has had an HD image file copied over it (with dd) prior to any of these results being generated.

15 years, 1 month

2
1
0 0

2026

2025

2024

2023

2022

2021

2020

2019

2018

2017

2016

2015

2014

2013

2012

2011

Flashbench-results