extrmemory 16 GB class 6 performance - Flashbench-results

19 Apr 2011


      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