==> /sys/block/mmcblk0/device/cid <== 2750485344344742207c107ae600a900
==> /sys/block/mmcblk0/device/csd <== 400e00325b5900001d7f7f800a400000
==> /sys/block/mmcblk0/device/date <== 09/2010
==> /sys/block/mmcblk0/device/fwrev <== 0x0
==> /sys/block/mmcblk0/device/hwrev <== 0x2
==> /sys/block/mmcblk0/device/manfid <== 0x000027
==> /sys/block/mmcblk0/device/name <== SD4GB
==> /sys/block/mmcblk0/device/oemid <== 0x5048
("PH")
==> /sys/block/mmcblk0/device/scr <== 0235000001000000
==> /sys/block/mmcblk0/device/serial <== 0x7c107ae6
==> /sys/block/mmcblk0/device/type <== SD
==> /sys/block/mmcblk0/device/uevent <== DRIVER=mmcblk MMC_TYPE=SD MMC_NAME=SD4GB MODALIAS=mmc:block
179 0 3866624 mmcblk0 179 1 3866593 mmcblk0p1 arnd@klappe2:~$ factor 3866624 3866624: 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 59
arnd@klappe2:~/git/flashbench$ sudo ./flashbench --open-au /dev/mmcblk0 --blocksize=$[1024] --open-au-nr=2 4MiB 4.9M/s 2MiB 4.13M/s 1MiB 1.76M/s 512KiB 841K/s 256KiB 414K/s 128KiB 206K/s 64KiB 103K/s 32KiB 51.5K/s ^C
arnd@klappe2:~/git/flashbench$ sudo ./flashbench --open-au /dev/mmcblk0 --blocksize=$[1024] --open-au-nr=1 4MiB 3.59M/s 2MiB 3.56M/s 1MiB 2.32M/s 512KiB 2.31M/s 256KiB 2.31M/s 128KiB 3.51M/s 64KiB 7.82M/s 32KiB 6.99M/s 16KiB 6.02M/s 8KiB 3.64M/s 4KiB 1.34M/s 2KiB 548K/s 1KiB 8.4K/s (!!!)
arnd@klappe2:~/git/flashbench$ sudo ./flashbench --findfat /dev/mmcblk0 --blocksize=$[1024] --open-au-nr=1 --fat-nr=8 4MiB 2.11M/s 2.51M/s 7.66M/s 7.66M/s 7.75M/s 7.65M/s 7.84M/s 7.65M/s 2MiB 2.86M/s 2.53M/s 7.65M/s 7.65M/s 7.83M/s 7.64M/s 7.71M/s 7.7M/s 1MiB 2.59M/s 2.83M/s 7.66M/s 7.69M/s 7.65M/s 7.85M/s 7.9M/s 7.64M/s 512KiB 2.56M/s 2.55M/s 7.67M/s 7.68M/s 7.62M/s 7.75M/s 7.84M/s 7.68M/s 256KiB 2.83M/s 2.58M/s 7.67M/s 7.69M/s 7.87M/s 7.85M/s 7.66M/s 7.71M/s 128KiB 2.56M/s 2.88M/s 7.63M/s 7.65M/s 7.66M/s 7.67M/s 7.81M/s 7.66M/s 64KiB 2.58M/s 2.82M/s 7.67M/s 7.66M/s 7.69M/s 7.82M/s 7.67M/s 7.69M/s 32KiB 2.37M/s 2.31M/s 6.82M/s 6.83M/s 6.97M/s 6.9M/s 6.95M/s 6.86M/s 16KiB 2.03M/s 2.09M/s 5.99M/s 6.02M/s 5.97M/s 6.05M/s 6.01M/s 6.15M/s 8KiB 1.44M/s 1.53M/s 3.68M/s 3.64M/s 3.6M/s 3.62M/s 3.63M/s 3.63M/s
arnd@klappe2:~/git/flashbench$ sudo ./flashbench --findfat /dev/mmcblk0 --blocksize=$[1024] --open-au-nr=1 --fat-nr=3 --random 4MiB 2.57M/s 2.82M/s 4.24M/s 2MiB 2.57M/s 2.8M/s 1.96M/s 1MiB 2.57M/s 2.85M/s 1.76M/s 512KiB 2.55M/s 2.56M/s 444K/s 256KiB 2.57M/s 2.82M/s 244K/s 128KiB 2.34M/s 2.81M/s 164K/s 64KiB 2.34M/s 2.53M/s 157K/s 32KiB 2.18M/s 2.51M/s 85.2K/s 16KiB 1.76M/s 1.93M/s 42K/s 8KiB 1.42M/s 1.54M/s 4KiB 858K/s 841K/s 2KiB 440K/s 446K/s 1KiB 231K/s 229K/s