==> /sys/block/mmcblk0/device/block <== head: error reading `/sys/block/mmcblk0/device/block': Is a directory
==> /sys/block/mmcblk0/device/cid <== 4134325344384742300040014300ab00
==> /sys/block/mmcblk0/device/csd <== 400e00325b5900003b4e7f800a400000
==> /sys/block/mmcblk0/device/date <== 11/2010
==> /sys/block/mmcblk0/device/driver <== head: error reading `/sys/block/mmcblk0/device/driver': Is a directory
==> /sys/block/mmcblk0/device/erase_size <== 512
==> /sys/block/mmcblk0/device/fwrev <== 0x0
==> /sys/block/mmcblk0/device/hwrev <== 0x3
==> /sys/block/mmcblk0/device/manfid <== 0x000041
==> /sys/block/mmcblk0/device/name <== SD8GB
==> /sys/block/mmcblk0/device/oemid <== 0x3432
==> /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 <== 0x00400143
==> /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=SD8GB MODALIAS=mmc:block
Disk /dev/mmcblk0: 7960 MB, 7960264704 bytes 245 heads, 62 sectors/track, 1023 cylinders, total 15547392 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 * 62 15539369 7769654 c W95 FAT32 (LBA) Partition 1 has different physical/logical endings: phys=(1023, 244, 62) logical=(1022, 244, 62)
arnd@klappe2:~/git/flashbench$ sudo ./flashbench -a /dev/mmcblk0 --blocksize=1024 --count=64 align 805306368 pre 832µs on 1.2ms post 853µs diff 359µs align 536870912 pre 854µs on 1.23ms post 869µs diff 364µs align 402653184 pre 814µs on 1.08ms post 895µs diff 225µs align 268435456 pre 927µs on 1.25ms post 888µs diff 342µs align 201326592 pre 748µs on 1.1ms post 896µs diff 273µs align 134217728 pre 770µs on 1.07ms post 886µs diff 242µs align 100663296 pre 734µs on 1.07ms post 886µs diff 262µs align 67108864 pre 809µs on 1.06ms post 879µs diff 217µs align 50331648 pre 855µs on 1.07ms post 888µs diff 200µs align 33554432 pre 831µs on 1.08ms post 897µs diff 216µs align 25165824 pre 866µs on 1.09ms post 890µs diff 214µs align 16777216 pre 807µs on 1.1ms post 888µs diff 256µs align 12582912 pre 785µs on 1.06ms post 854µs diff 243µs align 8388608 pre 787µs on 1.1ms post 878µs diff 266µs align 6291456 pre 1.06ms on 1.19ms post 863µs diff 229µs align 4194304 pre 720µs on 1.06ms post 862µs diff 265µs align 3145728 pre 1.05ms on 1.17ms post 856µs diff 218µs align 2097152 pre 1.05ms on 1.17ms post 853µs diff 218µs align 1572864 pre 1.05ms on 1.17ms post 855µs diff 219µs align 1048576 pre 1.05ms on 1.17ms post 855µs diff 216µs align 786432 pre 1.05ms on 1.17ms post 856µs diff 217µs align 524288 pre 1.06ms on 1.17ms post 854µs diff 217µs ^C
arnd@klappe2:~/git/flashbench$ sudo ./flashbench --open-au --erasesize=$[4096*1024] --blocksize=1024 --open-au-nr=1 /dev/mmcblk0 4MiB 9.42M/s 2MiB 6.17M/s 1MiB 6.31M/s 512KiB 7.18M/s 256KiB 8.41M/s 128KiB 8.87M/s 64KiB 9.47M/s 32KiB 7M/s 16KiB 6.01M/s 8KiB 2.29M/s 4KiB 1.04M/s 2KiB 500K/s 1KiB 244K/s
arnd@klappe2:~/git/flashbench$ sudo ./flashbench --open-au --erasesize=$[4096*1024] --blocksize=1024 --open-au-nr=1 /dev/mmcblk0 --random 4MiB 9.35M/s 2MiB 6.45M/s 1MiB 4.74M/s 512KiB 3.38M/s 256KiB 3.12M/s 128KiB 3.48M/s 64KiB 3.43M/s 32KiB 2.66M/s 16KiB 2.93M/s 8KiB 1.24M/s 4KiB 695K/s 2KiB 326K/s ^C
arnd@klappe2:~/git/flashbench$ sudo ./flashbench --open-au --erasesize=$[4096*1024] --blocksize=1024 --open-au-nr=2 /dev/mmcblk0 4MiB 6.69M/s 2MiB 9.32M/s 1MiB 9.5M/s 512KiB 9.49M/s 256KiB 9.51M/s 128KiB 9.5M/s 64KiB 9.49M/s 32KiB 7M/s 16KiB 6.04M/s 8KiB 1.91M/s 4KiB 1.04M/s
arnd@klappe2:~/git/flashbench$ sudo ./flashbench --open-au --erasesize=$[4096*1024] --blocksize=1024 --open-au-nr=7 /dev/mmcblk0 4MiB 9.32M/s 2MiB 9.48M/s 1MiB 9.5M/s 512KiB 9.49M/s 256KiB 9.5M/s 128KiB 9.3M/s 64KiB 9.38M/s 32KiB 6.93M/s 16KiB 6M/s ^C
arnd@klappe2:~/git/flashbench$ sudo ./flashbench --open-au --erasesize=$[4096*1024] --blocksize=1024 --open-au-nr=8 /dev/mmcblk0 4MiB 9.33M/s 2MiB 7.18M/s 1MiB 5.83M/s 512KiB 9.48M/s 256KiB 9.48M/s 128KiB 9.49M/s 64KiB 9.49M/s 32KiB 7.03M/s ^C
arnd@klappe2:~/git/flashbench$ sudo ./flashbench --open-au --erasesize=$[4096*1024] --blocksize=1024 --open-au-nr=9 /dev/mmcblk0 4MiB 8.92M/s 2MiB 4.85M/s 1MiB 4.6M/s
arnd@klappe2:~/git/flashbench$ sudo ./flashbench --open-au --erasesize=$[4096*1024] --blocksize=1024 --open-au-nr=9 /dev/mmcblk0 4MiB 8.92M/s 2MiB 4.85M/s 1MiB 4.6M/s 512KiB 1.8M/s ^C arnd@klappe2:~/git/flashbench$ sudo ./flashbench --open-au --erasesize=$[4096*1024] --blocksize=1024 --open-au-nr=4 /dev/mmcblk0 --random 4MiB 9.4M/s 2MiB 4.18M/s 1MiB 4.69M/s 512KiB 3.6M/s 256KiB 2.85M/s 128KiB 3.54M/s ^C arnd@klappe2:~/git/flashbench$ sudo ./flashbench --open-au --erasesize=$[4096*1024] --blocksize=1024 --open-au-nr=8 /dev/mmcblk0 --random 4MiB 8.29M/s 2MiB 4.42M/s 1MiB 2.81M/s
arnd@klappe2:~/git/flashbench$ sudo ./flashbench --open-au --erasesize=$[4096*1024] --blocksize=1024 --open-au-nr=5 /dev/mmcblk0 --random 4MiB 9.37M/s 2MiB 4.63M/s 1MiB 3.72M/s 512KiB 2.29M/s 256KiB 922K/s arnd@klappe2:~/git/flashbench$ sudo ./flashbench --open-au --erasesize=$[2048*1024] --blocksize=1024 --open-au-nr=5 /dev/mmcblk0 --random 2MiB 9.58M/s 1MiB 3.47M/s 512KiB 2M/s 256KiB 855K/s ^C