On Tuesday 03 May 2011 22:54:49 Arnd Bergmann wrote:
arnd@wuerfel:~/flashbench$ sudo ./flashbench /dev/sdd1 --open-au --blocksize=512 --erasesize=2097152 --open-au-nr=1 2MiB 15.2M/s 1MiB 13.3M/s
All wrong, used the partition instead of the device. Correct numbers follow:
arnd@wuerfel:~/flashbench$ sudo ./flashbench /dev/sdd --blocksize=4096 --erasesize=$[2*1024*1024] --findfat --fat-nr=10 --random 2MiB 11M/s 12.5M/s 11.4M/s 11.5M/s 11.5M/s 11.1M/s 11.1M/s 11.3M/s 25.2M/s 25.2M/s 1MiB 25.2M/s 24.8M/s 11.1M/s 11.2M/s 11.2M/s 10.7M/s 10.8M/s 9.18M/s 9.17M/s 9.13M/s 512KiB 11.1M/s 10.8M/s 16.9M/s 16.8M/s 16.8M/s 10.9M/s 10.9M/s 9.09M/s 9.11M/s 9.08M/s 256KiB 24.2M/s 10.8M/s 11.4M/s 11.4M/s 11.4M/s 12.4M/s 12.5M/s 12.4M/s 12.3M/s 12.3M/s 128KiB 9.4M/s 11.5M/s 11.6M/s 11.5M/s 11.6M/s 10.3M/s 10.3M/s 5.78M/s 5.77M/s 5.78M/s 64KiB 11.1M/s 10.9M/s 13.3M/s 13.3M/s 13.3M/s 10.9M/s 11M/s 11.1M/s 11M/s 11M/s 32KiB 18.7M/s 9.69M/s 9.65M/s 9.67M/s 9.61M/s 9.55M/s 9.66M/s 9.67M/s 9.63M/s 9.68M/s 16KiB 7.89M/s 5.63M/s 7.9M/s 7.91M/s 7.9M/s 7.89M/s 7.89M/s 5.08M/s 5.07M/s 5.06M/s
arnd@wuerfel:~/flashbench$ sudo ./flashbench /dev/sdd --blocksize=$[4096] --erasesize=$[2*1024*1024] --open-au --open-au-nr=4 2MiB 23M/s 1MiB 26.4M/s 512KiB 26.2M/s 256KiB 26.5M/s 128KiB 22.8M/s 64KiB 30.2M/s 32KiB 25.8M/s 16KiB 20.4M/s 8KiB 8.11M/s 4KiB 3.74M/s
arnd@wuerfel:~/flashbench$ sudo ./flashbench /dev/sdd --blocksize=$[4096] --erasesize=$[2*1024*1024] --open-au --open-au-nr=5 2MiB 26M/s 1MiB 18.9M/s 512KiB 7.36M/s 256KiB 3M/s 128KiB 1.58M/s 64KiB 817K/s 32KiB 409K/s
arnd@wuerfel:~/flashbench$ sudo ./flashbench /dev/sdd --blocksize=$[4096] --erasesize=$[2*1024*1024] --open-au --open-au-nr=4 --random 2MiB 25.6M/s 1MiB 17.6M/s 512KiB 25.1M/s 256KiB 10.2M/s 128KiB 10.6M/s 64KiB 24.9M/s 32KiB 9.56M/s 16KiB 4.77M/s 8KiB 3.55M/s 4KiB 1.79M/s
arnd@wuerfel:~/flashbench$ sudo ./flashbench /dev/sdd --blocksize=$[4096] --erasesize=$[2*1024*1024] --open-au --open-au-nr=4 --random 2MiB 9.95M/s 1MiB 17.7M/s 512KiB 25.1M/s 256KiB 10.2M/s 128KiB 10.7M/s 64KiB 24.9M/s 32KiB 9.54M/s 16KiB 4.77M/s 8KiB 3.55M/s 4KiB 1.79M/s
arnd@wuerfel:~/flashbench$ sudo ./flashbench /dev/sdd --blocksize=$[4096] --erasesize=$[2*1024*1024] --open-au --open-au-nr=5 --random 2MiB 11.4M/s 1MiB 16.5M/s 512KiB 6.34M/s 256KiB 3.14M/s 128KiB 1.58M/s ^C