Flashbench-results April 2011

flashbench-results@lists.linaro.org

4 participants
17 discussions

by Philippe De Muyter

Hello Arnd, Here are the results for the Kingston CF 2GB (Assy in TAIWAN). The one marked with (Assy in Japan) have another size, and probabbly other characteristics. Could the size be related to the number of open-au's ? Philippe tmp179:~ # cat /proc/partitions major minor #blocks name 8 0 244198584 sda 8 1 2103296 sda1 8 2 20972544 sda2 8 16 1982232 sdb 8 17 1975963 sdb1 tmp179:~ # ./flashbench -a -b 1024 /dev/sdb sched_setscheduler: Operation not permitted align 67108864 pre 343µs on 370µs post 321µs diff 37.5µs align 33554432 pre 342µs on 367µs post 319µs diff 36.5µs align 16777216 pre 342µs on 368µs post 320µs diff 36.5µs align 8388608 pre 343µs on 368µs post 318µs diff 37.1µs align 4194304 pre 342µs on 368µs post 319µs diff 37.1µs align 2097152 pre 343µs on 368µs post 319µs diff 37µs align 1048576 pre 344µs on 370µs post 320µs diff 38.3µs align 524288 pre 322µs on 350µs post 344µs diff 17.1µs align 262144 pre 320µs on 349µs post 344µs diff 16.8µs align 131072 pre 321µs on 349µs post 344µs diff 16.9µs align 65536 pre 321µs on 350µs post 344µs diff 17.2µs align 32768 pre 323µs on 351µs post 344µs diff 18µs align 16384 pre 320µs on 326µs post 321µs diff 5.4µs align 8192 pre 321µs on 325µs post 320µs diff 5µs align 4096 pre 320µs on 326µs post 321µs diff 5.6µs align 2048 pre 320µs on 325µs post 321µs diff 4.85µs tmp179:~ # hdparm -i /dev/sdb /dev/sdb: Model=CF CARD 2GB, FwRev=20071116, SerialNo=CF 2GB 20051F71 Config={ HardSect NotMFM Fixed DTR>10Mbs } RawCHS=3933/16/63, TrkSize=0, SectSize=576, ECCbytes=4 BuffType=DualPort, BuffSize=1kB, MaxMultSect=1, MultSect=off CurCHS=3933/16/63, CurSects=3964464, LBA=yes, LBAsects=3964464 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 AdvancedPM=no * signifies the current active mode tmp179:~ # for i in `seq 1 10`; do echo $i; ./flashbench --open-au --open-au-nr=$i --erasesize=$[1024 * 1024] --blocksize=16384 /dev/sdb; done 1 sched_setscheduler: Operation not permitted 1MiB 11M/s 512KiB 11.1M/s 256KiB 11M/s 128KiB 11M/s 64KiB 10.7M/s 32KiB 10M/s 16KiB 8.83M/s 2 sched_setscheduler: Operation not permitted 1MiB 11.1M/s 512KiB 11.1M/s 256KiB 11.1M/s 128KiB 11.1M/s 64KiB 10.7M/s 32KiB 10.1M/s 16KiB 8.87M/s 3 sched_setscheduler: Operation not permitted 1MiB 11.1M/s 512KiB 11.1M/s 256KiB 11.1M/s 128KiB 11.1M/s 64KiB 10.8M/s 32KiB 10.1M/s 16KiB 8.85M/s 4 sched_setscheduler: Operation not permitted 1MiB 11.1M/s 512KiB 8.32M/s 256KiB 4.56M/s 128KiB 2.39M/s ^C tmp179:~ # for i in `seq 1 10`; do echo $i; ./flashbench --open-au --open-au-nr=$i --erasesize=$[1024 * 1024] --blocksize=16384 /dev/sdb --random; done 1 sched_setscheduler: Operation not permitted 1MiB 11.1M/s 512KiB 11.1M/s 256KiB 7.38M/s 128KiB 6.18M/s 64KiB 6.12M/s 32KiB 6.47M/s 16KiB 7.04M/s 2 sched_setscheduler: Operation not permitted 1MiB 7.37M/s 512KiB 8.05M/s 256KiB 6.72M/s 128KiB 6.4M/s 64KiB 6.53M/s 32KiB 6.55M/s 16KiB 7.04M/s 3 sched_setscheduler: Operation not permitted 1MiB 8.66M/s 512KiB 9.11M/s 256KiB 6.79M/s 128KiB 5.55M/s 64KiB 4.24M/s 32KiB 4.05M/s 16KiB 3.92M/s 4 sched_setscheduler: Operation not permitted 1MiB 9.37M/s 512KiB 9.67M/s 256KiB 6.73M/s 128KiB 4.79M/s 64KiB 3.32M/s 32KiB 3.07M/s 16KiB 3.52M/s 5 sched_setscheduler: Operation not permitted 1MiB 9.8M/s 512KiB 7.8M/s 256KiB 4.75M/s 128KiB 4.21M/s 64KiB 2.99M/s 32KiB 2.46M/s 16KiB 2.75M/s 6 sched_setscheduler: Operation not permitted 1MiB 11.4M/s 512KiB 7.1M/s 256KiB 4.03M/s 128KiB 2.7M/s 64KiB 2.83M/s 32KiB 2.38M/s 16KiB 2.45M/s 7 sched_setscheduler: Operation not permitted 1MiB 11.4M/s 512KiB 6.71M/s 256KiB 3.73M/s 128KiB 2.43M/s 64KiB 2.49M/s 32KiB 2.07M/s 16KiB 2.11M/s 8 sched_setscheduler: Operation not permitted 1MiB 11.4M/s 512KiB 6.4M/s 256KiB 3.5M/s 128KiB 2.26M/s 64KiB 2.23M/s 32KiB 1.85M/s 16KiB 1.86M/s 9 sched_setscheduler: Operation not permitted 1MiB 11.4M/s 512KiB 6.18M/s 256KiB 3.33M/s 128KiB 2.1M/s 64KiB 2.04M/s 32KiB 1.65M/s 16KiB 1.66M/s 10 sched_setscheduler: Operation not permitted 1MiB 11.4M/s 512KiB 6M/s 256KiB 3.18M/s 128KiB 1.99M/s 64KiB 1.88M/s 32KiB 1.52M/s 16KiB 1.51M/s (reverse-i-search)`fat': ./flashbench --findfat --^Ct-nr=10 --erasesize=$[2 * 1024 * 1024] --blocksize=1024 /dev/sdb tmp179:~ # ./flashbench --findfat --fat-nr=10 --erasesize=$[1024 * 1024] --blocksize=1024 /dev/sdb sched_setscheduler: Operation not permitted 1MiB 4.32M/s 11.4M/s 11.4M/s 11.4M/s 11.4M/s 11.2M/s 11.3M/s 11.4M/s 11.3M/s 11.4M/s 512KiB 11.3M/s 11.4M/s 11.1M/s 11.4M/s 11.4M/s 11.4M/s 11.4M/s 11.4M/s 11M/s 11.4M/s 256KiB 11.4M/s 11.4M/s 11.2M/s 11.2M/s 11.2M/s 11.2M/s 11.3M/s 11.4M/s 11.4M/s 11.3M/s 128KiB 11.3M/s 11.3M/s 11.2M/s 11.4M/s 11.4M/s 11.4M/s 11.4M/s 11.2M/s 11.3M/s 11.4M/s 64KiB 11M/s 11M/s 11M/s 11M/s 10.8M/s 11M/s 11M/s 11M/s 11M/s 11M/s 32KiB 9.98M/s 10.3M/s 10.3M/s 10.3M/s 10.2M/s 10.1M/s 10.2M/s 10.2M/s 10.2M/s 10.3M/s 16KiB 8.99M/s 9.01M/s 9.01M/s 8.99M/s 8.94M/s 9.02M/s 9.03M/s 9.03M/s 9.01M/s 8.95M/s 8KiB 7.2M/s 7.23M/s 7.23M/s 7.22M/s 7.21M/s 7.23M/s 7.13M/s 7.23M/s 7.23M/s 7.22M/s 4KiB 4.98M/s 4.97M/s 4.83M/s 4.97M/s 4.97M/s 4.97M/s 4.92M/s 4.91M/s 4.93M/s 4.93M/s 2KiB 3.04M/s 3.06M/s 3.05M/s 3.06M/s 3.05M/s 3.06M/s 3.03M/s 3.06M/s 3.06M/s 3.06M/s 1KiB 1.26M/s 1.26M/s 1.26M/s 1.26M/s 1.25M/s 1.26M/s 1.26M/s 1.24M/s 1.26M/s 1.25M/s tmp179:~ # ./flashbench --findfat --fat-nr=10 --erasesize=$[1024 * 1024] --blocksize=1024 /dev/sdb sched_setscheduler: Operation not permitted 1MiB 11.2M/s 11.4M/s 11.4M/s 11.3M/s 11.4M/s 11.4M/s 11.4M/s 11.3M/s 11.4M/s 11.4M/s 512KiB 11.4M/s 11.2M/s 11.4M/s 11.4M/s 11.4M/s 11.4M/s 11.4M/s 11.4M/s 11.2M/s 11.3M/s 256KiB 11M/s 11.4M/s 11.4M/s 11.3M/s 11.4M/s 11.3M/s 11.1M/s 11.4M/s 11.4M/s 11M/s 128KiB 11.4M/s 11.2M/s 11.3M/s 11.4M/s 11.4M/s 11.3M/s 11.4M/s 11.3M/s 11.4M/s 11.3M/s 64KiB 11M/s 11M/s 11M/s 10.9M/s 11M/s 11M/s 11M/s 11M/s 11M/s 11M/s 32KiB 10.1M/s 10.2M/s 10M/s 10.4M/s 10.3M/s 10.3M/s 10.3M/s 10.3M/s 10.1M/s 10.3M/s 16KiB 9.03M/s 8.82M/s 9.02M/s 8.93M/s 8.94M/s 9.01M/s 9.03M/s 9M/s 9.02M/s 9.01M/s 8KiB 7.24M/s 7.22M/s 7.23M/s 7.21M/s 7.22M/s 7.17M/s 7.24M/s 7.23M/s 7.22M/s 7.23M/s 4KiB 4.97M/s 4.98M/s 4.92M/s 4.93M/s 4.84M/s 4.99M/s 4.97M/s 4.96M/s 4.97M/s 4.96M/s 2KiB 3.01M/s 3.06M/s 3.06M/s 2.97M/s 3.05M/s 3.03M/s 3.03M/s 3.05M/s 3.06M/s 3.05M/s 1KiB 1.26M/s 1.26M/s 1.26M/s 1.26M/s 1.26M/s 1.26M/s 1.26M/s 1.25M/s 1.24M/s 1.26M/s tmp179:~ # -- Philippe De Muyter +32 2 6101532 Macq SA rue de l'Aeronef 2 B-1140 Bruxelles

14 years, 9 months

Silicon Systems CF Card 2 GB

by Arnd Bergmann

# sudo fdisk /dev/sdc -lu Disk /dev/sdc: 2 GB, 2097446400 bytes 255 heads, 63 sectors/track, 255 cylinders, total 4096575 sectors Units = sectors of 1 * 512 = 512 bytes Device Boot Start End Blocks Id System /dev/sdc1 * 63 144584 72261 e FAT16 LBA /dev/sdc2 144585 4096574 1967962 83 Linux $ sudo ./flashbench -a /dev/sdc --blocksize=1024 --count=100 align 268435456 pre 611µs on 687µs post 608µs diff 77.3µs align 134217728 pre 598µs on 695µs post 597µs diff 97.8µs align 67108864 pre 601µs on 605µs post 601µs diff 4.26µs align 33554432 pre 598µs on 607µs post 602µs diff 7.52µs align 16777216 pre 600µs on 604µs post 603µs diff 3.1µs align 8388608 pre 603µs on 609µs post 606µs diff 4.29µs align 4194304 pre 589µs on 593µs post 591µs diff 3.13µs align 2097152 pre 593µs on 596µs post 591µs diff 3.28µs align 1048576 pre 606µs on 602µs post 592µs diff 3.37µs align 524288 pre 604µs on 610µs post 610µs diff 3.38µs align 262144 pre 588µs on 591µs post 591µs diff 1.42µs align 131072 pre 585µs on 606µs post 584µs diff 20.7µs align 65536 pre 592µs on 590µs post 590µs diff -344ns align 32768 pre 591µs on 587µs post 588µs diff -2848ns align 16384 pre 588µs on 588µs post 585µs diff 1.95µs align 8192 pre 591µs on 586µs post 590µs diff -4470ns align 4096 pre 586µs on 589µs post 584µs diff 3.41µs align 2048 pre 594µs on 593µs post 590µs diff 1.21µs $ sudo ./flashbench /dev/sdc2 --open-au --blocksize=512 --erasesize=$[1024 * 8192] 8MiB 5.21M/s 4MiB 5.23M/s 2MiB 5.24M/s 1MiB 5.24M/s 512KiB 5.31M/s 256KiB 5.28M/s 128KiB 5.27M/s 64KiB 5.24M/s 32KiB 5.21M/s 16KiB 5.09M/s 8KiB 4.85M/s 4KiB 4.43M/s 2KiB 3.9M/s 1KiB 2.64M/s 512B 1.35M/s arnd@wuerfel:~/flashbench$ sudo ./flashbench /dev/sdc2 --open-au --blocksize=512 --erasesize=$[1024 * 8192] --random 8MiB 5.25M/s 4MiB 5.24M/s 2MiB 5.23M/s 1MiB 5.24M/s 512KiB 5.26M/s 256KiB 5.34M/s 128KiB 5.26M/s 64KiB 3.2M/s 32KiB 1.8M/s 16KiB 970K/s 8KiB 509K/s ^C arnd@wuerfel:~/flashbench$ sudo ./flashbench /dev/sdc2 --open-au --blocksize=512 --erasesize=$[1024 * 128] --open-au-nr=2 128KiB 3.1M/s 64KiB 3.68M/s 32KiB 2.01M/s 16KiB 1.08M/s 8KiB 632K/s 4KiB 4.43M/s 2KiB 3.91M/s 1KiB 2.65M/s 512B 1.35M/s arnd@wuerfel:~/flashbench$ sudo ./flashbench /dev/sdc2 --open-au --blocksize=512 --erasesize=$[1024 * 512] --open-au-nr=4 512KiB 5.28M/s 256KiB 5.13M/s 128KiB 5.4M/s 64KiB 4.01M/s 32KiB 3.36M/s 16KiB 4.92M/s 8KiB 5.02M/s 4KiB 4.32M/s 2KiB 3.98M/s 1KiB 2.68M/s 512B 1.36M/s arnd@wuerfel:~/flashbench$ sudo ./flashbench /dev/sdc2 --open-au --blocksize=512 --erasesize=$[1024 * 512] --open-au-nr=5 512KiB 4.95M/s 256KiB 5.47M/s 128KiB 5.19M/s 64KiB 3.8M/s 32KiB 2.27M/s 16KiB 1.35M/s 8KiB 762K/s 4KiB 465K/s 2KiB 293K/s 1KiB 180K/s arnd@wuerfel:~/flashbench$ sudo ./flashbench /dev/sdc2 --open-au --blocksize=512 --erasesize=$[1024 * 512] --open-au-nr=6 512KiB 5.2M/s 256KiB 5.44M/s 128KiB 5.23M/s 64KiB 3.67M/s 32KiB 2.14M/s 16KiB 1.22M/s 8KiB 676K/s 4KiB 377K/s arnd@wuerfel:~/flashbench$ sudo ./flashbench /dev/sdc2 --open-au --blocksize=512 --erasesize=$[1024 * 1024] --open-au-nr=4 1MiB 5.02M/s 512KiB 5.4M/s 256KiB 5.28M/s 128KiB 5.24M/s 64KiB 5.26M/s 32KiB 5.19M/s 16KiB 5.25M/s 8KiB 4.85M/s 4KiB 4.53M/s 2KiB 3.89M/s 1KiB 2.66M/s 512B 1.35M/s arnd@wuerfel:~/flashbench$ sudo ./flashbench /dev/sdc2 --open-au --blocksize=512 --erasesize=$[1024 * 128] --open-au-nr=4 --random 128KiB 4.62M/s 64KiB 4.05M/s 32KiB 3.63M/s 16KiB 2.2M/s 8KiB 1.44M/s 4KiB 1.02M/s 2KiB 3.24M/s 1KiB 2.6M/s 512B 1.34M/s arnd@wuerfel:~/flashbench$ sudo ./flashbench /dev/sdc2 --open-au --blocksize=512 --erasesize=$[1024 * 128] --open-au-nr=4 --random 128KiB 5.29M/s 64KiB 5.28M/s 32KiB 5.24M/s 16KiB 5.12M/s 8KiB 4.79M/s 4KiB 4.44M/s 2KiB 3.91M/s 1KiB 2.64M/s 512B 1.35M/s arnd@wuerfel:~/flashbench$ sudo ./flashbench /dev/sdc2 --open-au --blocksize=512 --erasesize=$[1024 * 128] --open-au-nr=5 --random 128KiB 5.3M/s 64KiB 4.18M/s 32KiB 4.66M/s 16KiB 2.67M/s 8KiB 1.48M/s 4KiB 793K/s 2KiB 406K/s 1KiB 197K/s

15 years, 4 months

PQI 512MB compactflash

by Arnd Bergmann

Disk /dev/sdc: 515 MB, 515579904 bytes 16 heads, 63 sectors/track, 999 cylinders, total 1006992 sectors Units = sectors of 1 * 512 = 512 bytes Device Boot Start End Blocks Id System /dev/sdc1 * 63 1005983 502960 6 FAT16 arnd@wuerfel:~/flashbench$ sudo ./flashbench -a /dev/sdc --blocksize=1024 --count=100 align 67108864 pre 827µs on 990µs post 786µs diff 184µs align 33554432 pre 811µs on 992µs post 812µs diff 181µs align 16777216 pre 798µs on 992µs post 814µs diff 186µs align 8388608 pre 809µs on 994µs post 805µs diff 187µs align 4194304 pre 812µs on 995µs post 827µs diff 175µs align 2097152 pre 803µs on 986µs post 813µs diff 178µs align 1048576 pre 805µs on 849µs post 798µs diff 47.2µs align 524288 pre 809µs on 857µs post 811µs diff 47.5µs align 262144 pre 808µs on 861µs post 814µs diff 50.2µs align 131072 pre 804µs on 852µs post 812µs diff 44.1µs align 65536 pre 805µs on 854µs post 814µs diff 45µs align 32768 pre 829µs on 825µs post 808µs diff 5.79µs align 16384 pre 802µs on 810µs post 818µs diff 45ns align 8192 pre 814µs on 807µs post 813µs diff -6146ns align 4096 pre 806µs on 830µs post 808µs diff 22.6µs align 2048 pre 803µs on 806µs post 807µs diff 344ns arnd@wuerfel:~/flashbench$ sudo ./flashbench --open-au --erasesize=$[2*1024*1024] /dev/sdc --blocksize=512 2MiB 4.12M/s 1MiB 4.09M/s 512KiB 4.09M/s 256KiB 4.05M/s 128KiB 4M/s 64KiB 4M/s 32KiB 3.33M/s 16KiB 2.69M/s 8KiB 2.2M/s 4KiB 1.57M/s 2KiB 946K/s 1KiB 308K/s 512B 132K/s arnd@wuerfel:~/flashbench$ sudo ./flashbench --open-au --erasesize=$[2*1024*1024] /dev/sdc --blocksize=8192 --random 2MiB 4.12M/s 1MiB 4.12M/s 512KiB 4.1M/s 256KiB 4.07M/s 128KiB 3.96M/s 64KiB 3.93M/s 32KiB 2.35M/s 16KiB 1.31M/s 8KiB 777K/s arnd@wuerfel:~/flashbench$ sudo ./flashbench --open-au --erasesize=$[2*1024*1024] /dev/sdc --blocksize=65536 --random --open-au-nr=4 2MiB 4.07M/s 1MiB 4.14M/s 512KiB 4.08M/s 256KiB 4.05M/s 128KiB 3.93M/s 64KiB 3.87M/s arnd@wuerfel:~/flashbench$ sudo ./flashbench --open-au --erasesize=$[2*1024*1024] /dev/sdc --blocksize=65536 --random --open-au-nr=8 2MiB 4.08M/s 1MiB 4.12M/s 512KiB 4.05M/s 256KiB 4.01M/s 128KiB 3.85M/s 64KiB 3.72M/s arnd@wuerfel:~/flashbench$ sudo ./flashbench --open-au --erasesize=$[1024*512] /dev/sdc --blocksize=2048 --open-au-nr=8 512KiB 3.96M/s 256KiB 4.02M/s 128KiB 3.92M/s 64KiB 3.77M/s 32KiB 1.71M/s 16KiB 846K/s 8KiB 428K/s arnd@wuerfel:~/flashbench$ sudo ./flashbench --open-au --erasesize=$[1024*256] /dev/sdc --blocksize=2048 --open-au-nr=5 256KiB 4.09M/s 128KiB 3.82M/s 64KiB 3.72M/s 32KiB 3.65M/s 16KiB 2.9M/s 8KiB 2.1M/s 4KiB 1.46M/s 2KiB 869K/s arnd@wuerfel:~/flashbench$ sudo ./flashbench --open-au --erasesize=$[1024*256] /dev/sdc --blocksize=2048 --open-au-nr=6 256KiB 4.08M/s 128KiB 4.05M/s 64KiB 4.02M/s 32KiB 2.78M/s 16KiB 1.57M/s 8KiB 893K/s 4KiB 501K/s 2KiB 273K/s arnd@wuerfel:~/flashbench$ sudo ./flashbench --open-au --erasesize=$[1024*256] /dev/sdc --blocksize=2048 --open-au-nr=4 --random 256KiB 4.07M/s 128KiB 3.84M/s 64KiB 3.8M/s 32KiB 2.95M/s 16KiB 2.17M/s 8KiB 1.66M/s 4KiB 1.16M/s 2KiB 684K/s arnd@wuerfel:~/flashbench$ sudo ./flashbench --open-au --erasesize=$[1024*256] /dev/sdc --blocksize=2048 --open-au-nr=5 --random 256KiB 3.99M/s 128KiB 3.82M/s 64KiB 3.7M/s 32KiB 2.85M/s 16KiB 1.66M/s 8KiB 745K/s 4KiB 369K/s 2KiB 200K/s arnd@wuerfel:~/flashbench$ sudo ./flashbench --erasesize=$[1024*256] /dev/sdc --blocksize=2048 --findfat --fat-nr=8 --random 256KiB 4.44M/s 4.01M/s 4.31M/s 4.04M/s 4.33M/s 4.02M/s 4.34M/s 3.52M/s 128KiB 3.94M/s 3.91M/s 4.11M/s 3.95M/s 4.27M/s 3.96M/s 4.26M/s 3.39M/s 64KiB 4.12M/s 3.99M/s 4.25M/s 3.93M/s 4.33M/s 4.03M/s 4.22M/s 3.38M/s 32KiB 3.48M/s 3.51M/s 3.54M/s 2.56M/s 3.29M/s 2.03M/s 2.75M/s 2.32M/s 16KiB 2.3M/s 2.19M/s 2.81M/s 1.9M/s 2.8M/s 1.57M/s 2.71M/s 1.31M/s 8KiB 1.86M/s 1.19M/s 1.76M/s 1.23M/s 1.73M/s 1.14M/s 1.75M/s 1.24M/s 4KiB 1.18M/s 879K/s 1.23M/s 1.06M/s 1.27M/s 1.07M/s 1.24M/s 1.05M/s 2KiB 744K/s 708K/s 771K/s 778K/s 813K/s 743K/s 838K/s 767K/s

15 years, 4 months

8 GB Transcend CF 133x

by Arnd Bergmann

Disk /dev/sdc: 8 GB, 8011422720 bytes 255 heads, 63 sectors/track, 974 cylinders Units = cylinders of 16065 * 512 = 8225280 bytes Device Boot Start End Blocks Id System /dev/sdc1 * 1 973 7815591 b FAT32 arnd@wuerfel:~/flashbench$ sudo ./flashbench -a /dev/sdc --blocksize=1024 align 1073741824 pre 614µs on 711µs post 616µs diff 96.2µs align 536870912 pre 599µs on 702µs post 597µs diff 104µs align 268435456 pre 591µs on 717µs post 592µs diff 126µs align 134217728 pre 598µs on 686µs post 590µs diff 92.2µs align 67108864 pre 595µs on 688µs post 596µs diff 92.2µs align 33554432 pre 600µs on 722µs post 595µs diff 124µs align 16777216 pre 595µs on 705µs post 591µs diff 112µs align 8388608 pre 594µs on 672µs post 601µs diff 74.1µs align 4194304 pre 611µs on 706µs post 616µs diff 92.6µs align 2097152 pre 611µs on 722µs post 611µs diff 110µs align 1048576 pre 603µs on 619µs post 619µs diff 7.93µs align 524288 pre 613µs on 616µs post 615µs diff 1.22µs align 262144 pre 610µs on 614µs post 617µs diff 923ns align 131072 pre 611µs on 617µs post 614µs diff 4.7µs align 65536 pre 614µs on 619µs post 620µs diff 1.61µs align 32768 pre 609µs on 618µs post 615µs diff 5.75µs align 16384 pre 612µs on 617µs post 617µs diff 2.55µs align 8192 pre 609µs on 611µs post 609µs diff 1.91µs align 4096 pre 605µs on 604µs post 606µs diff -1900ns align 2048 pre 609µs on 617µs post 616µs diff 4.75µs arnd@wuerfel:~/flashbench$ sudo ./flashbench --erasesize=2097152 /dev/sdc --open-au --open-au-nr=1 --blocksize=512 2MiB 15.9M/s 1MiB 15.8M/s 512KiB 15.5M/s 256KiB 15.5M/s 128KiB 13.8M/s 64KiB 17.2M/s 32KiB 16.5M/s 16KiB 14.8M/s 8KiB 5.39M/s 4KiB 2.78M/s 2KiB 1.41M/s 1KiB 827K/s 512B 440K/s arnd@wuerfel:~/flashbench$ sudo ./flashbench --erasesize=2097152 /dev/sdc --open-au --open-au-nr=3 --blocksize=512 2MiB 15.7M/s 1MiB 10.2M/s 512KiB 15.6M/s 256KiB 15.7M/s 128KiB 13.9M/s 64KiB 17.5M/s 32KiB 16.8M/s 16KiB 14.6M/s 8KiB 5.4M/s 4KiB 2.7M/s 2KiB 1.41M/s 1KiB 814K/s 512B 442K/s arnd@wuerfel:~/flashbench$ sudo ./flashbench --erasesize=2097152 /dev/sdc --open-au --blocksize=8192 --random --open-au-nr=3 2MiB 15.8M/s 1MiB 11M/s 512KiB 5.81M/s 256KiB 4.11M/s 128KiB 5.5M/s 64KiB 5.85M/s 32KiB 2.97M/s 16KiB 2.69M/s 8KiB 1.68M/s (again:) arnd@wuerfel:~/flashbench$ sudo ./flashbench --erasesize=2097152 /dev/sdc --open-au --blocksize=8192 --random --open-au-nr=3 2MiB 5.2M/s 1MiB 5.2M/s 512KiB 5.13M/s 256KiB 5.19M/s 128KiB 4.89M/s 64KiB 4.07M/s 32KiB 3.83M/s 16KiB 2.89M/s 8KiB 1.61M/s arnd@wuerfel:~/flashbench$ sudo ./flashbench --erasesize=2097152 /dev/sdc --open-au --blocksize=8192 --open-au-nr=3 2MiB 5.94M/s 1MiB 4.58M/s 512KiB 5.97M/s 256KiB 5.09M/s 128KiB 5.9M/s 64KiB 5.66M/s 32KiB 9.88M/s 16KiB 14.8M/s 8KiB 5.42M/s arnd@wuerfel:~/flashbench$ sudo ./flashbench --erasesize=2097152 /dev/sdc --open-au --blocksize=8192 --open-au-nr=3 2MiB 15.8M/s 1MiB 16M/s 512KiB 16M/s 256KiB 15.7M/s 128KiB 13.8M/s 64KiB 17.7M/s 32KiB 16.8M/s 16KiB 14.8M/s 8KiB 5.2M/s arnd@wuerfel:~/flashbench$ sudo ./flashbench --erasesize=2097152 /dev/sdc --open-au --blocksize=8192 --open-au-nr=4 2MiB 11.4M/s 1MiB 11.2M/s 512KiB 4.9M/s 256KiB 2.2M/s 128KiB 941K/s 64KiB 433K/s 32KiB 214K/s 16KiB 107K/s 8KiB 53.2K/s arnd@wuerfel:~/flashbench$ sudo ./flashbench --erasesize=2097152 /dev/sdc --open-au --blocksize=8192 --open-au-nr=4 --random 2MiB 6.25M/s 1MiB 6.79M/s 512KiB 4.98M/s 256KiB 4.19M/s 128KiB 4.62M/s 64KiB 5.88M/s 32KiB 3.39M/s 16KiB 3.2M/s 8KiB 1.42M/s arnd@wuerfel:~/flashbench$ sudo ./flashbench --erasesize=2097152 /dev/sdc --open-au --blocksize=8192 --open-au-nr=5 --random 2MiB 6.84M/s 1MiB 6.59M/s 512KiB 4.48M/s 256KiB 3.33M/s 128KiB 2.57M/s 64KiB 1.45M/s 32KiB 780K/s 16KiB 398K/s 8KiB 199K/s arnd@wuerfel:~/flashbench$ sudo ./flashbench --erasesize=2097152 /dev/sdc --blocksize=8192 -f --fat-nr=8 2MiB 16M/s 16.1M/s 15.9M/s 16M/s 15.8M/s 16M/s 15.8M/s 16M/s 1MiB 16.1M/s 16M/s 16.3M/s 16.1M/s 15.7M/s 16M/s 16.3M/s 16.2M/s 512KiB 15.9M/s 16.1M/s 16.2M/s 16M/s 16M/s 16.1M/s 16.1M/s 15.9M/s 256KiB 16M/s 15.4M/s 15.7M/s 15.8M/s 15.7M/s 15.5M/s 15.9M/s 16.1M/s 128KiB 14.1M/s 14M/s 14M/s 14.1M/s 14.3M/s 14M/s 14M/s 14M/s 64KiB 17.5M/s 17.7M/s 17.9M/s 17.9M/s 17.9M/s 17.8M/s 17.9M/s 17.9M/s 32KiB 16.8M/s 16.8M/s 17M/s 16.8M/s 16.9M/s 16.7M/s 16.6M/s 16.7M/s 16KiB 14.7M/s 14.8M/s 14.8M/s 14.9M/s 14.9M/s 14.9M/s 10.8M/s 14.8M/s 8KiB 5.55M/s 5.51M/s 5.43M/s 5.49M/s 5.55M/s 5.51M/s 5.49M/s 5.49M/s

15 years, 5 months

USB Stick: 8GB SanDisk Cruzer Micro (2008)

by Sitsofe Wheeler

I'm not really sure how to generate useful results so here's what I've got so far: # lsusb Bus 001 Device 004: ID 0781:5151 SanDisk Corp. Cruzer Micro Flash Drive # ./flashbench -a /dev/sdb --blocksize=1024 align 2147483648 pre 687µs on 599µs post 495µs diff 7.44µs align 1073741824 pre 635µs on 657µs post 499µs diff 90.3µs align 536870912 pre 601µs on 634µs post 495µs diff 86.1µs align 268435456 pre 602µs on 635µs post 490µs diff 89.5µs align 134217728 pre 621µs on 638µs post 496µs diff 79.5µs align 67108864 pre 602µs on 636µs post 509µs diff 80.4µs align 33554432 pre 606µs on 622µs post 494µs diff 71.8µs align 16777216 pre 614µs on 625µs post 498µs diff 69.3µs align 8388608 pre 602µs on 620µs post 490µs diff 73.2µs align 4194304 pre 601µs on 637µs post 508µs diff 83µs align 2097152 pre 601µs on 653µs post 495µs diff 106µs align 1048576 pre 494µs on 584µs post 511µs diff 81.5µs align 524288 pre 491µs on 510µs post 495µs diff 17µs align 262144 pre 491µs on 511µs post 494µs diff 18.2µs align 131072 pre 493µs on 510µs post 494µs diff 16.3µs align 65536 pre 495µs on 513µs post 494µs diff 18.8µs align 32768 pre 490µs on 511µs post 489µs diff 21.6µs align 16384 pre 493µs on 511µs post 494µs diff 17.9µs align 8192 pre 511µs on 514µs post 495µs diff 11µs align 4096 pre 538µs on 530µs post 496µs diff 12.9µs align 2048 pre 506µs on 515µs post 513µs diff 5.52µs # ./flashbench -f /dev/sdb 4MiB 7.41M/s 7.35M/s 7.37M/s 7.33M/s 7.47M/s 7.39M/s 2MiB 7.37M/s 7.38M/s 7.42M/s 7.3M/s 7.1M/s 4.45M/s 1MiB 7.21M/s 7.06M/s 7.05M/s 7.07M/s 7.14M/s 7.22M/s 512KiB 6.97M/s 6.93M/s 6.92M/s 6.79M/s 6.95M/s 6.95M/s 256KiB 7M/s 6.82M/s 6.95M/s 6.89M/s 7.02M/s 6.71M/s 128KiB 7.51M/s 7.8M/s 7.64M/s 7.43M/s 7.6M/s 7.6M/s 64KiB 10.4M/s 10.2M/s 10.1M/s 10.1M/s 10.1M/s 10.2M/s 32KiB 4.53M/s 4.55M/s 4.48M/s 4.53M/s 4.47M/s 4.45M/s 16KiB 3.77M/s 3.73M/s 3.75M/s 3.75M/s 3.74M/s 3.75M/s A further question is how do I use these results so as to get good performance? Should I be setting the first partition in any particular way and/or passing any special options to mkfs.vfat? -- Sitsofe

15 years, 5 months

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, 5 months

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, 5 months

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, 5 months

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, 5 months

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, 5 months

2026

2025

2024

2023

2022

2021

2020

2019

2018

2017

2016

2015

2014

2013

2012

2011

Flashbench-results April 2011