Flashbench-results May 2011

flashbench-results@lists.linaro.org

4 participants
28 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

13 years, 5 months

Corsair Voyager 3.0 16GB

by Michael Monnerie

Just bought a new stick, is USB 3.0 capable, I only got a USB 2.0 slot for testing, these are the results: (kernel 2.6.38.6) # lsusb -v Bus 001 Device 005: ID 1b1c:1a00 Device Descriptor: bLength 18 bDescriptorType 1 bcdUSB 2.10 bDeviceClass 0 (Defined at Interface level) bDeviceSubClass 0 bDeviceProtocol 0 bMaxPacketSize0 64 idVendor 0x1b1c idProduct 0x1a00 bcdDevice a.00 iManufacturer 1 Corsair iProduct 2 Voyager 3.0 iSerial 3 09021000000000000000001038 bNumConfigurations 1 Configuration Descriptor: bLength 9 bDescriptorType 2 wTotalLength 32 bNumInterfaces 1 bConfigurationValue 1 iConfiguration 0 bmAttributes 0x80 (Bus Powered) MaxPower 500mA Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 0 bAlternateSetting 0 bNumEndpoints 2 bInterfaceClass 8 Mass Storage bInterfaceSubClass 6 SCSI bInterfaceProtocol 80 Bulk (Zip) iInterface 0 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x02 EP 2 OUT bmAttributes 2 Transfer Type Bulk Synch Type None Usage Type Data wMaxPacketSize 0x0200 1x 512 bytes bInterval 0 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x81 EP 1 IN bmAttributes 2 Transfer Type Bulk Synch Type None Usage Type Data wMaxPacketSize 0x0200 1x 512 bytes bInterval 0 Device Status: 0x0000 # ./flashbench -a /dev/sdd --blocksize=1024 align 4294967296 pre 868µs on 1.16ms post 866µs diff 290µs align 2147483648 pre 870µs on 1.28ms post 864µs diff 413µs align 1073741824 pre 865µs on 1.12ms post 864µs diff 252µs align 536870912 pre 855µs on 1.11ms post 866µs diff 253µs align 268435456 pre 863µs on 999µs post 854µs diff 140µs align 134217728 pre 866µs on 1.1ms post 863µs diff 233µs align 67108864 pre 858µs on 1.11ms post 865µs diff 254µs align 33554432 pre 866µs on 996µs post 867µs diff 129µs align 16777216 pre 868µs on 1.12ms post 867µs diff 252µs align 8388608 pre 867µs on 1.12ms post 865µs diff 253µs align 4194304 pre 819µs on 872µs post 865µs diff 29.9µs align 2097152 pre 837µs on 872µs post 862µs diff 23µs align 1048576 pre 852µs on 871µs post 870µs diff 9.95µs align 524288 pre 857µs on 870µs post 859µs diff 12.2µs align 262144 pre 842µs on 870µs post 866µs diff 15.7µs align 131072 pre 848µs on 867µs post 870µs diff 7.85µs align 65536 pre 852µs on 870µs post 859µs diff 14.6µs align 32768 pre 864µs on 866µs post 865µs diff 1.15µs align 16384 pre 861µs on 870µs post 867µs diff 5.94µs align 8192 pre 860µs on 989µs post 864µs diff 127µs align 4096 pre 868µs on 968µs post 865µs diff 101µs align 2048 pre 865µs on 869µs post 860µs diff 6.97µs # ./flashbench -a /dev/sdd --blocksize=$[256 * 1024] align 4294967296 pre 7.83ms on 8.15ms post 7.73ms diff 373µs align 2147483648 pre 7.84ms on 8.19ms post 7.77ms diff 388µs align 1073741824 pre 7.68ms on 7.87ms post 7.67ms diff 194µs align 536870912 pre 7.72ms on 7.97ms post 7.66ms diff 277µs align 268435456 pre 7.74ms on 7.95ms post 7.68ms diff 240µs align 134217728 pre 7.78ms on 7.99ms post 7.69ms diff 256µs align 67108864 pre 7.81ms on 7.99ms post 7.74ms diff 211µs align 33554432 pre 7.79ms on 7.99ms post 7.64ms diff 271µs align 16777216 pre 7.82ms on 7.98ms post 7.69ms diff 227µs align 8388608 pre 7.78ms on 7.99ms post 7.66ms diff 274µs align 4194304 pre 7.78ms on 7.75ms post 7.76ms diff -22205n align 2097152 pre 7.84ms on 7.84ms post 7.87ms diff -10279n align 1048576 pre 7.76ms on 7.76ms post 7.74ms diff 10.1µs align 524288 pre 7.75ms on 7.76ms post 7.76ms diff 3.1µs # ./flashbench -a /dev/sdd --blocksize=$[512 * 1024] align 4294967296 pre 14.7ms on 15ms post 14.7ms diff 268µs align 2147483648 pre 14.4ms on 14.8ms post 14.4ms diff 417µs align 1073741824 pre 14.5ms on 14.7ms post 14.4ms diff 235µs align 536870912 pre 14.4ms on 14.6ms post 14.4ms diff 229µs align 268435456 pre 14.5ms on 14.8ms post 14.4ms diff 371µs align 134217728 pre 14.5ms on 14.7ms post 14.5ms diff 186µs align 67108864 pre 14.5ms on 14.7ms post 14.5ms diff 247µs align 33554432 pre 14.5ms on 14.7ms post 14.5ms diff 199µs align 16777216 pre 14.5ms on 14.6ms post 14.4ms diff 140µs align 8388608 pre 14.5ms on 14.7ms post 14.5ms diff 221µs align 4194304 pre 14.5ms on 14.5ms post 14.5ms diff -25738n align 2097152 pre 14.6ms on 14.6ms post 14.5ms diff 12.9µs align 1048576 pre 14.6ms on 14.6ms post 14.5ms diff 30.9µs # ./flashbench -a /dev/sdd --blocksize=$[1024 * 1024] align 4294967296 pre 27.9ms on 28.5ms post 28.4ms diff 340µs align 2147483648 pre 28.1ms on 28.4ms post 28.1ms diff 295µs align 1073741824 pre 28ms on 28.3ms post 28ms diff 244µs align 536870912 pre 28.1ms on 28.3ms post 28.2ms diff 199µs align 268435456 pre 28.4ms on 28.5ms post 28.2ms diff 233µs align 134217728 pre 28.3ms on 28.3ms post 27.9ms diff 228µs align 67108864 pre 28.1ms on 28.4ms post 28.1ms diff 289µs align 33554432 pre 28.2ms on 28.4ms post 28ms diff 240µs align 16777216 pre 28.2ms on 28.4ms post 28.1ms diff 232µs align 8388608 pre 28.1ms on 28.3ms post 28.1ms diff 264µs align 4194304 pre 28ms on 28.2ms post 28.2ms diff 159µs align 2097152 pre 28ms on 28ms post 28.1ms diff -10985n # ./flashbench --open-au --open-au-nr=2 --erasesize=$[4 * 1024 * 1024] /dev/sdd --blocksize=$[256 * 1024] 4MiB 22M/s 2MiB 5.91M/s 1MiB 21.5M/s 512KiB 5.88M/s 256KiB 20.9M/s # ./flashbench --open-au --open-au-nr=2 --erasesize=$[8 * 1024 * 1024] /dev/sdd --blocksize=$[256 * 1024] 8MiB 21.3M/s 4MiB 21.1M/s 2MiB 21M/s 1MiB 20.9M/s 512KiB 20.7M/s 256KiB 20.2M/s # ./flashbench --open-au --open-au-nr=4 --erasesize=$[8 * 1024 * 1024] /dev/sdd --blocksize=$[256 * 1024] 8MiB 21.3M/s 4MiB 21.1M/s 2MiB 21.1M/s 1MiB 20.9M/s 512KiB 20.7M/s 256KiB 20.2M/s # ./flashbench --open-au --open-au-nr=5 --erasesize=$[8 * 1024 * 1024] /dev/sdd --blocksize=$[256 * 1024] 8MiB 21.2M/s 4MiB 16.7M/s 2MiB 15.2M/s 1MiB 14.5M/s 512KiB 14.1M/s 256KiB 13.7M/s # ./flashbench --open-au --open-au-nr=6 --erasesize=$[8 * 1024 * 1024] /dev/sdd --blocksize=$[256 * 1024] 8MiB 21.3M/s 4MiB 14.8M/s 2MiB 12.8M/s 1MiB 12M/s 512KiB 11.6M/s 256KiB 11.2M/s # ./flashbench --open-au --open-au-nr=2 --erasesize=$[16 * 1024 * 1024] /dev/sdd --blocksize=$[256 * 1024] 16MiB 21.5M/s 8MiB 21.3M/s 4MiB 21.3M/s 2MiB 21.2M/s 1MiB 21.1M/s 512KiB 20.8M/s 256KiB 20.3M/s # ./flashbench --open-au --open-au-nr=3 --erasesize=$[16 * 1024 * 1024] /dev/sdd --blocksize=$[256 * 1024] 16MiB 21.5M/s 8MiB 21.3M/s 4MiB 21.2M/s 2MiB 21.1M/s 1MiB 21.2M/s 512KiB 21.2M/s 256KiB 20.6M/s # ./flashbench --open-au --open-au-nr=4 --erasesize=$[16 * 1024 * 1024] /dev/sdd --blocksize=$[256 * 1024] 16MiB 21.7M/s 8MiB 21.5M/s 4MiB 21.5M/s 2MiB 21.3M/s 1MiB 21.2M/s 512KiB 21M/s 256KiB 20.4M/s # ./flashbench --open-au --open-au-nr=5 --erasesize=$[16 * 1024 * 1024] /dev/sdd --blocksize=$[256 * 1024] 16MiB 21.4M/s 8MiB 21.3M/s 4MiB 16.9M/s 2MiB 15.3M/s 1MiB 14.6M/s 512KiB 14.1M/s 256KiB 13.7M/s # ./flashbench --open-au --open-au-nr=6 --erasesize=$[16 * 1024 * 1024] /dev/sdd --blocksize=$[256 * 1024] 16MiB 21.3M/s 8MiB 21.2M/s 4MiB 14.8M/s 2MiB 12.8M/s 1MiB 12M/s 512KiB 9.32M/s 256KiB 11.2M/s # ./flashbench --open-au --open-au-nr=4 --erasesize=$[8 * 1024 * 1024] /dev/sdd --random 8MiB 21.2M/s 4MiB 21.4M/s 2MiB 12.8M/s 1MiB 8.06M/s 512KiB 6.77M/s 256KiB 6.01M/s 128KiB 5.92M/s 64KiB 5.58M/s 32KiB 3.15M/s 16KiB 2.64M/s # ./flashbench --open-au --open-au-nr=5 --erasesize=$[8 * 1024 * 1024] /dev/sdd --random 8MiB 21.3M/s 4MiB 17M/s 2MiB 11.1M/s 1MiB 7.7M/s 512KiB 5.67M/s 256KiB 6.19M/s 128KiB 5.13M/s 64KiB 5.69M/s 32KiB 3.19M/s 16KiB 2.2M/s Can you guide me with what I should test next? -- mit freundlichen Grüssen, Michael Monnerie, Ing. BSc it-management Internet Services: Protéger http://proteger.at [gesprochen: Prot-e-schee] Tel: +43 660 / 415 6531 // ****** Radiointerview zum Thema Spam ****** // http://www.it-podcast.at/archiv.html#podcast-100716 // // Haus zu verkaufen: http://zmi.at/langegg/

13 years, 12 months

Swissbit SFCF8192H3BK4SA

by Arnd Bergmann

Disk /dev/sdc: 8 GB, 8195604480 bytes 16 heads, 63 sectors/track, 15880 cylinders, total 16007040 sectors Units = sectors of 1 * 512 = 512 bytes Device Boot Start End Blocks Id System /dev/sdc1 256 19839 10048 83 Linux Warning: Partition 1 does not end on cylinder boundary. /dev/sdc2 19840 996479 488376 83 Linux Warning: Partition 2 does not end on cylinder boundary. /dev/sdc3 996480 1973119 488376 83 Linux Warning: Partition 3 does not end on cylinder boundary. /dev/sdc4 1973120 16007039 7016688 5 Extended /dev/sdc5 1974672 15697583 6860952 83 Linux Warning: Partition 5 does not end on cylinder boundary. /dev/sdc6 15697647 16007039 154224 83 Linux Warning: Partition 6 does not end on cylinder boundary. align 536870912 pre 481µs on 481µs post 484µs diff -1367ns align 268435456 pre 479µs on 480µs post 480µs diff 244ns align 134217728 pre 483µs on 483µs post 484µs diff -375ns align 67108864 pre 478µs on 481µs post 479µs diff 2.88µs align 33554432 pre 481µs on 483µs post 482µs diff 1.18µs align 16777216 pre 480µs on 484µs post 480µs diff 3.4µs align 8388608 pre 479µs on 478µs post 477µs diff -144ns align 4194304 pre 482µs on 482µs post 478µs diff 1.98µs align 2097152 pre 484µs on 486µs post 486µs diff 674ns align 1048576 pre 489µs on 489µs post 490µs diff -893ns align 524288 pre 487µs on 491µs post 490µs diff 2.52µs align 262144 pre 484µs on 486µs post 486µs diff 878ns align 131072 pre 477µs on 477µs post 479µs diff -489ns align 65536 pre 485µs on 490µs post 489µs diff 3.58µs align 32768 pre 487µs on 489µs post 490µs diff 544ns align 16384 pre 479µs on 486µs post 487µs diff 2.38µs align 8192 pre 477µs on 478µs post 479µs diff 75ns align 4096 pre 484µs on 484µs post 486µs diff -912ns align 2048 pre 477µs on 479µs post 479µs diff 844ns arnd@wuerfel:~/flashbench$ sudo ./flashbench /dev/sdc6 --open-au --erasesize=524288 --open-au-nr=4 --random --blocksize=512 512KiB 15.6M/s 256KiB 15.6M/s 128KiB 15.4M/s 64KiB 15.3M/s 32KiB 14.8M/s 16KiB 14M/s 8KiB 12.7M/s 4KiB 8.04M/s 2KiB 4.23M/s 1KiB 2.7M/s 512B 1.33M/s arnd@wuerfel:~/flashbench$ sudo ./flashbench /dev/sdc6 --open-au --erasesize=524288 --open-au-nr=5 --random --blocksize=512 512KiB 15.5M/s 256KiB 8.61M/s 128KiB 5.96M/s 64KiB 2.74M/s 32KiB 1.34M/s 16KiB 669K/s 8KiB 339K/s 4KiB 169K/s arnd@wuerfel:~/flashbench$ sudo ./flashbench /dev/sdc6 --open-au --erasesize=524288 --open-au-nr=4 --blocksize=512 512KiB 15.7M/s 256KiB 15.8M/s 128KiB 15.6M/s 64KiB 15.5M/s 32KiB 14.8M/s 16KiB 14M/s 8KiB 12.6M/s 4KiB 8.03M/s 2KiB 4.22M/s 1KiB 2.71M/s 512B 1.36M/s arnd@wuerfel:~/flashbench$ sudo ./flashbench /dev/sdc6 --open-au --erasesize=524288 --open-au-nr=5 --blocksize=512 512KiB 14.5M/s 256KiB 9.09M/s 128KiB 5.04M/s 64KiB 3.03M/s 32KiB 1.38M/s 16KiB 689K/s 8KiB 350K/s 4KiB 174K/s arnd@wuerfel:~/flashbench$ sudo ./flashbench /dev/sdc --blocksize=512 --erasesize=$[512*1024] --findfat --fat-nr=6 512KiB 16.2M/s 15.8M/s 15.5M/s 15.8M/s 16.4M/s 15.8M/s 256KiB 15.6M/s 15.5M/s 15.5M/s 16.1M/s 16.1M/s 15.8M/s 128KiB 15.6M/s 15.5M/s 15.5M/s 15.3M/s 15.4M/s 15.4M/s 64KiB 16M/s 15.3M/s 15.1M/s 15.9M/s 15.3M/s 15.2M/s 32KiB 15.1M/s 14.9M/s 14.8M/s 14.9M/s 15.3M/s 14.9M/s 16KiB 14M/s 14M/s 14M/s 14M/s 14M/s 14M/s 8KiB 12.5M/s 12.7M/s 12.7M/s 12.6M/s 12.7M/s 12.7M/s 4KiB 7.93M/s 8.02M/s 8.03M/s 8.02M/s 8.02M/s 8.03M/s 2KiB 4.07M/s 4.16M/s 4.17M/s 4.11M/s 4.16M/s 4.13M/s 1KiB 2.68M/s 2.71M/s 2.71M/s 2.71M/s 2.71M/s 2.71M/s 512B 1.35M/s 1.36M/s 1.36M/s 1.36M/s 1.33M/s 1.34M/s

13 years, 12 months

Sandisk Cruzer Blade 8GB USB

by Arnd Bergmann

Bus 002 Device 002: ID 0781:5567 SanDisk Corp. Cruszer Blade Device Descriptor: bLength 18 bDescriptorType 1 bcdUSB 2.00 bDeviceClass 0 (Defined at Interface level) bDeviceSubClass 0 bDeviceProtocol 0 bMaxPacketSize0 64 idVendor 0x0781 SanDisk Corp. idProduct 0x5567 Cruszer Blade bcdDevice 1.00 iManufacturer 1 iProduct 2 iSerial 3 bNumConfigurations 1 Configuration Descriptor: bLength 9 bDescriptorType 2 wTotalLength 32 bNumInterfaces 1 bConfigurationValue 1 iConfiguration 0 bmAttributes 0x80 (Bus Powered) MaxPower 200mA Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 0 bAlternateSetting 0 bNumEndpoints 2 bInterfaceClass 8 Mass Storage bInterfaceSubClass 6 SCSI bInterfaceProtocol 80 Bulk (Zip) iInterface 0 arnd@klappe2:~$ sudo sdparm -v /dev/sdc /dev/sdc: SanDisk Cruzer Blade 1.00 >> Read write error recovery mode page [0x1] not found >> Caching (SBC) mode page [0x8] not found >> Control mode page [0xa] not found >> Informational exceptions control mode page [0x1c] failed Disk /dev/sdc: 8000 MB, 8000110592 bytes 160 heads, 19 sectors/track, 5139 cylinders, total 15625216 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/sdc1 32 15625215 7812592 b W95 FAT32 sudo ./flashbench -a /dev/sdc --blocksize=1024 align 25165824 pre 685µs on 1.05ms post 682µs diff 363µs align 16777216 pre 735µs on 892µs post 746µs diff 151µs align 12582912 pre 696µs on 1.06ms post 697µs diff 360µs align 8388608 pre 694µs on 809µs post 696µs diff 113µs align 6291456 pre 717µs on 1.08ms post 697µs diff 376µs align 4194304 pre 710µs on 858µs post 714µs diff 146µs align 3145728 pre 721µs on 848µs post 705µs diff 136µs align 2097152 pre 720µs on 858µs post 717µs diff 139µs align 1572864 pre 720µs on 733µs post 710µs diff 18.1µs align 1048576 pre 707µs on 846µs post 710µs diff 137µs align 786432 pre 719µs on 732µs post 710µs diff 17.1µs align 524288 pre 708µs on 722µs post 722µs diff 7µs align 393216 pre 720µs on 735µs post 710µs diff 20.3µs align 262144 pre 708µs on 722µs post 710µs diff 12.7µs align 196608 pre 710µs on 735µs post 710µs diff 25.1µs align 131072 pre 710µs on 722µs post 722µs diff 5.96µs align 98304 pre 710µs on 735µs post 709µs diff 25.6µs align 65536 pre 707µs on 722µs post 722µs diff 7.49µs # Trying 4 MB erase blocks -> 2 arnd@klappe2:~/git/flashbench$ sudo ./flashbench --open-au --erasesize=$[4*1024*1024] /dev/sdc --blocksize=4096 --open-au-nr=1 4MiB 17.6M/s 2MiB 18M/s 1MiB 18M/s 512KiB 18.1M/s 256KiB 17.8M/s 128KiB 17.7M/s 64KiB 16M/s 32KiB 15.5M/s 16KiB 13.4M/s 8KiB 8.82M/s 4KiB 3.14M/s arnd@klappe2:~/git/flashbench$ sudo ./flashbench --open-au --erasesize=$[4*1024*1024] /dev/sdc --blocksize=4096 --open-au-nr=2 4MiB 7.39M/s 2MiB 18M/s 1MiB 18M/s 512KiB 18M/s 256KiB 17.8M/s 128KiB 17.8M/s 64KiB 16M/s 32KiB 16.5M/s 16KiB 13.6M/s 8KiB 8.73M/s 4KiB 3.15M/s arnd@klappe2:~/git/flashbench$ sudo ./flashbench --open-au --erasesize=$[4*1024*1024] /dev/sdc --blocksize=4096 --open-au-nr=3 4MiB 3.55M/s 2MiB 4.13M/s 1MiB 3.93M/s 512KiB 4.23M/s 256KiB 3.9M/s 128KiB 3.48M/s 64KiB 4.79M/s 32KiB 3.98M/s 16KiB 3.18M/s 8KiB 3.87M/s 4KiB 2.12M/s # trying 2 MB erase blocks -> 5 arnd@klappe2:~/git/flashbench$ sudo ./flashbench --open-au --erasesize=$[2*1024*1024] /dev/sdc --blocksize=4096 --open-au-nr=5 2MiB 8.89M/s 1MiB 18.1M/s 512KiB 18.2M/s 256KiB 17.9M/s 128KiB 18M/s 64KiB 16.3M/s 32KiB 16.8M/s 16KiB 13.7M/s 8KiB 8.8M/s 4KiB 3.07M/s arnd@klappe2:~/git/flashbench$ sudo ./flashbench --open-au --erasesize=$[2*1024*1024] /dev/sdc --blocksize=4096 --open-au-nr=6 2MiB 3.21M/s 1MiB 4.81M/s 512KiB 4.03M/s 256KiB 4.18M/s 128KiB 3.85M/s 64KiB 3.84M/s 32KiB 4.15M/s 16KiB 3.78M/s 8KiB 3.08M/s 4KiB 1.84M/s # trying 1 MB erase blocks -> 10 arnd@klappe2:~/git/flashbench$ sudo ./flashbench --open-au --erasesize=$[1*1024*1024] /dev/sdc --blocksize=4096 --open-au-nr=10 1MiB 4.28M/s 512KiB 9.07M/s 256KiB 17.9M/s 128KiB 17.8M/s 64KiB 16.2M/s 32KiB 16.8M/s 16KiB 13.7M/s 8KiB 8.75M/s 4KiB 2.88M/s 2KiB 1.36M/s 1KiB 656K/s arnd@klappe2:~/git/flashbench$ sudo ./flashbench --open-au --erasesize=$[1*1024*1024] /dev/sdc --blocksize=4096 --open-au-nr=11 1MiB 1.93M/s 512KiB 718K/s 256KiB 346K/s # trying 512 KB erase blocks -> 10 arnd@klappe2:~/git/flashbench$ sudo ./flashbench --open-au --erasesize=$[512*1024] /dev/sdc --blocksize=4096 --open-au-nr=10 512KiB 17.6M/s 256KiB 17.6M/s 128KiB 17.7M/s 64KiB 15.9M/s 32KiB 16.6M/s 16KiB 13.4M/s 8KiB 8.59M/s 4KiB 3.01M/s arnd@klappe2:~/git/flashbench$ sudo ./flashbench --open-au --erasesize=$[512*1024] /dev/sdc --blocksize=4096 --open-au-nr=11 512KiB 979K/s 256KiB 349K/s ^C # Trying random access: arnd@klappe2:~/git/flashbench$ sudo ./flashbench --open-au --erasesize=$[1*1024*1024] /dev/sdc --blocksize=4096 --open-au-nr=1 --random 1MiB 14.2M/s 512KiB 17.9M/s 256KiB 17.5M/s 128KiB 4.9M/s 64KiB 1.62M/s 32KiB 888K/s 16KiB 514K/s 8KiB 1.55M/s 4KiB 1.66M/s arnd@klappe2:~/git/flashbench$ sudo ./flashbench --open-au --erasesize=$[1*1024*1024] /dev/sdc --blocksize=4096 --open-au-nr=10 --random 1MiB 17.9M/s 512KiB 18.1M/s 256KiB 17.4M/s 128KiB 4.94M/s 64KiB 1.61M/s 32KiB 894K/s 16KiB 515K/s 8KiB 1.5M/s 4KiB 1.57M/s arnd@klappe2:~/git/flashbench$ sudo ./flashbench --open-au --erasesize=$[1*1024*1024] /dev/sdc --blocksize=4096 --open-au-nr=11 --random 1MiB 1.61M/s 512KiB 714K/s 256KiB 343K/s ^C arnd@klappe2:~/git/flashbench$ sudo ./flashbench --open-au --erasesize=$[3*1024*1024] /dev/sdc --blocksize=$[3*1024*1024] --open-au-nr=20 --offset=$[21 * 1024*1024] 3MiB 4.87M/s arnd@klappe2:~/git/flashbench$ sudo ./flashbench --open-au --erasesize=$[2*1024*1024] /dev/sdc --blocksize=$[2*1024*1024] --open-au-nr=20 --offset=$[24 * 1024*1024] 2MiB 2.96M/s

14 years

STEC M2+ CF 9.0.2 SLCF16M2PU

by Arnd Bergmann

arnd@klappe2:~/git/flashbench$ sudo hdparm -I /dev/sdc /dev/sdc: HDIO_DRIVE_CMD(identify) failed: Invalid exchange arnd@klappe2:~/git/flashbench$ sudo hdparm -I /dev/sdg /dev/sdg: CompactFlash ATA device Model Number: STEC M2+ CF 9.0.2 Serial Number: STIM2MT410135051121 Firmware Revision: K1169-2 Standards: Supported: 6 5 4 Likely used: 6 Configuration: Logical max current cylinders 16383 30681 heads 16 16 sectors/track 63 63 -- CHS current addressable sectors: 30926448 LBA user addressable sectors: 30926448 Logical/Physical Sector size: 512 bytes device size with M = 1024*1024: 15100 MBytes device size with M = 1000*1000: 15834 MBytes (15 GB) cache/buffer size = unknown Capabilities: LBA, IORDY(cannot be disabled) Standby timer values: spec'd by Standard R/W multiple sector transfer: Max = 1 Current = 1 DMA: mdma0 mdma1 *mdma2 udma0 udma1 udma2 udma3 udma4 Cycle time: min=120ns recommended=120ns PIO: pio0 pio1 pio2 pio3 pio4 Cycle time: no flow control=120ns IORDY flow control=120ns Commands/features: Enabled Supported: Security Mode feature set * Power Management feature set * Host Protected Area feature set * WRITE_BUFFER command * READ_BUFFER command * NOP cmd * CFA feature set CFA max advanced io_udma cycle time: 80ns CFA max advanced mem_udma cycle time: 80ns * CFA advanced modes: pio5 *pio6 mdma3 *mdma4 io_udma4 io_udma5 *io_udma6 io_udma7 io_udma8 mem_udma4 mem_udma5 *mem_udma6 mem_udma7 mem_udma8 Security: Master password revision code = 65534 supported not enabled not locked not frozen not expired: security count not supported: enhanced erase Integrity word not set (found 0x0000, expected 0x80a5) Disk /dev/sdg: 15.8 GB, 15834341376 bytes 255 heads, 63 sectors/track, 1925 cylinders, total 30926448 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: 0x000bd02f Device Boot Start End Blocks Id System /dev/sdg1 2048 30924799 15461376 83 Linux ==> card_id <== 0x0000 ==> func_id <== 0x04 ==> function <== 0x00 ==> manf_id <== 0x0000 ==> modalias <== pcmcia:m0000c0000f04fn00pfn00paC709C891pbFE591B16pc00000000pd00000000 ==> prod_id1 <== STEC M2+ CF 9.0.2 ==> prod_id2 <== M2P # Cannot tell erase block size: align 805306368 pre 737µs on 781µs post 737µs diff 43.4µs align 536870912 pre 725µs on 729µs post 725µs diff 3.52µs align 402653184 pre 738µs on 752µs post 725µs diff 20.7µs align 268435456 pre 738µs on 808µs post 753µs diff 62.4µs align 201326592 pre 737µs on 813µs post 754µs diff 67.6µs align 134217728 pre 726µs on 765µs post 739µs diff 32.9µs align 100663296 pre 724µs on 761µs post 739µs diff 29.9µs align 67108864 pre 722µs on 775µs post 736µs diff 45.2µs align 50331648 pre 721µs on 764µs post 752µs diff 27.1µs align 33554432 pre 734µs on 790µs post 750µs diff 47.5µs align 25165824 pre 740µs on 790µs post 748µs diff 46.3µs align 16777216 pre 722µs on 765µs post 744µs diff 31.8µs align 12582912 pre 728µs on 767µs post 736µs diff 35.4µs align 8388608 pre 731µs on 779µs post 737µs diff 44.7µs align 6291456 pre 760µs on 805µs post 761µs diff 43.7µs align 4194304 pre 752µs on 816µs post 753µs diff 63.8µs align 3145728 pre 730µs on 789µs post 750µs diff 49.1µs align 2097152 pre 715µs on 754µs post 737µs diff 28µs align 1572864 pre 729µs on 849µs post 805µs diff 82.9µs align 1048576 pre 732µs on 941µs post 894µs diff 128µs align 786432 pre 736µs on 912µs post 830µs diff 129µs align 524288 pre 724µs on 890µs post 818µs diff 119µs align 393216 pre 722µs on 867µs post 806µs diff 103µs align 262144 pre 723µs on 847µs post 792µs diff 89.3µs align 196608 pre 726µs on 827µs post 767µs diff 80.6µs align 131072 pre 724µs on 803µs post 759µs diff 62µs align 98304 pre 723µs on 802µs post 763µs diff 58.4µs align 65536 pre 724µs on 814µs post 764µs diff 70.6µs align 49152 pre 728µs on 802µs post 765µs diff 56µs align 32768 pre 724µs on 802µs post 764µs diff 58µs align 24576 pre 726µs on 803µs post 766µs diff 57.2µs align 16384 pre 726µs on 805µs post 761µs diff 61.5µs align 12288 pre 765µs on 801µs post 726µs diff 55.4µs align 8192 pre 725µs on 805µs post 765µs diff 60.4µs # no random access: arnd@klappe2:~/git/flashbench$ sudo ./flashbench --open-au /dev/sdc -b 1024 --erasesize=1048576 --random --open-au-nr=1 1MiB 10.4M/s 512KiB 1.36M/s 256KiB 1.66M/s 128KiB 1.36M/s 64KiB 813K/s 32KiB 448K/s 16KiB 305K/s 8KiB 298K/s 4KiB 177K/s # erase blocks don't really match arnd@klappe2:~/git/flashbench$ sudo ./flashbench --open-au /dev/sdc -b 1024 --erasesize=1048576 --open-au-nr=1 1MiB 7.51M/s 512KiB 2.13M/s 256KiB 4.12M/s 128KiB 6.73M/s 64KiB 7.38M/s 32KiB 7.17M/s 16KiB 5.9M/s 8KiB 4.82M/s 4KiB 3.25M/s 2KiB 2.37M/s 1KiB 1.66M/s arnd@klappe2:~/git/flashbench$ sudo ./flashbench --open-au /dev/sdc -b 1024 --erasesize=2097152 --open-au-nr=1 2MiB 10.9M/s 1MiB 4.56M/s 512KiB 3.82M/s 256KiB 6.8M/s 128KiB 10M/s 64KiB 10.7M/s 32KiB 10.1M/s 16KiB 8.33M/s 8KiB 6.61M/s 4KiB 4.21M/s 2KiB 3M/s 1KiB 1.9M/s arnd@klappe2:~/git/flashbench$ sudo ./flashbench --open-au /dev/sdc -b 1024 --erasesize=4194304 --open-au-nr=1 4MiB 13.7M/s 2MiB 7.41M/s 1MiB 7.5M/s 512KiB 6.54M/s 256KiB 10M/s 128KiB 12.9M/s 64KiB 14M/s 32KiB 12.9M/s 16KiB 10.5M/s 8KiB 7.77M/s 4KiB 5.12M/s 2KiB 3.32M/s 1KiB 2.02M/s arnd@klappe2:~/git/flashbench$ sudo ./flashbench --open-au /dev/sdc -b 1024 --erasesize=2097152 --open-au-nr=2 2MiB 11.3M/s 1MiB 7.37M/s 512KiB 4.53M/s 256KiB 2.56M/s 128KiB 1.37M/s 64KiB 737K/s 32KiB 377K/s arnd@klappe2:~/git/flashbench$ sudo ./flashbench --open-au /dev/sdc -b 1024 --erasesize=2097152 --open-au-nr=4 2MiB 10.9M/s 1MiB 7.39M/s 512KiB 4.54M/s 256KiB 2.55M/s 128KiB 1.4M/s 64KiB 735K/s 32KiB 376K/s # Linear writing is ok arnd@klappe2:~/git/flashbench$ sudo ./flashbench /dev/sdc --blocksize=1024 --erasesize=2097152 --findfat --fat-nr=6 2MiB 14.2M/s 19M/s 18.8M/s 19M/s 18.8M/s 18.9M/s 1MiB 6.04M/s 19M/s 18.9M/s 18.7M/s 18.9M/s 19.5M/s 512KiB 4.8M/s 18.7M/s 18.9M/s 18.8M/s 18.5M/s 18.7M/s 256KiB 7.52M/s 19.1M/s 19.2M/s 18.5M/s 18.4M/s 18.4M/s 128KiB 12.2M/s 18M/s 17.8M/s 17.4M/s 18M/s 18.1M/s 64KiB 12.5M/s 18.6M/s 18.3M/s 18.4M/s 18.3M/s 18.3M/s 32KiB 11.8M/s 16.7M/s 16.8M/s 16.8M/s 16.9M/s 16.7M/s 16KiB 9.86M/s 13.5M/s 13.6M/s 13.5M/s 13.5M/s 13.3M/s 8KiB 7.61M/s 9.4M/s 9.4M/s 9.42M/s 9.39M/s 9.22M/s 4KiB 5.47M/s 6.24M/s 6.05M/s 6.32M/s 6.17M/s 6.27M/s 2KiB 3.56M/s 3.78M/s 3.74M/s 3.72M/s 3.63M/s 3.67M/s 1KiB 1.9M/s 2.21M/s 2.23M/s 2.23M/s 2.22M/s 2.21M/s ################## # Further low-level testing revealed 992 KiB erase blocks, which gives us good performance: arnd@klappe2:~/git/flashbench$ sudo ./flashbench /dev/sdc --erasesize=$[512 * 1024] --blocksize=512 --open-au --open-au-nr=1 512KiB 20.2M/s 256KiB 3.77M/s 128KiB 16.8M/s 64KiB 18.5M/s 32KiB 16.5M/s 16KiB 12.9M/s 8KiB 9.23M/s 4KiB 6.39M/s 2KiB 3.23M/s 1KiB 1.6M/s 512B 812K/s # The same with 2 open erase blocks does not work at all: arnd@klappe2:~/git/flashbench$ sudo ./flashbench /dev/sdc --erasesize=$[512 * 1024] --blocksize=512 --open-au --open-au-nr=2 512KiB 2.83M/s 256KiB 1.99M/s 128KiB 1.43M/s 64KiB 763K/s 32KiB 376K/s 16KiB 293K/s 8KiB 282K/s 4KiB 184K/s 2KiB 102K/s 1KiB 85.9K/s 512B 75K/s # nor does random access: arnd@klappe2:~/git/flashbench$ sudo ./flashbench /dev/sdc --erasesize=$[512 * 1024] --blocksize=512 --open-au --open-au-nr=1 --random 512KiB 19.4M/s 256KiB 1.73M/s 128KiB 2.49M/s 64KiB 1.22M/s 32KiB 670K/s 16KiB 390K/s 8KiB 318K/s 4KiB 194K/s 2KiB 119K/s 1KiB 95K/s 512B 78.6K/s

14 years

Better Air Price to Brazil BSI SAM EIGHT

by Sam Peng / BSI-SZX

Dear Sir & Madam, Have a nice day ! This is Sam Peng from BSI (BEST SERVICES INT'L FREIGHT LTD) in China.we are as agent of Lufthansa Cargo / LH ; Lan Chile / LAN ; Bringer Air Cargo / E6 in China. We specialize in Air freight / Sea shipping to Brazil in China. It's my pleasure to send the the below air price for your reference. Shenzhen / Guangzhou / Dongguan ; China to San Paulo ; Brazil : ***we can help you to pick up the goods from any city in China to Brazil*** Our Promise: -- Closely keep in touch with you & Supplier. -- Keep working with you in the same time as you to know all update information for your order in time. -- Combine the shipment from different supplier and make the combine packing list & commercial invoice to one set original document -- Assist you to check new supplier's company credit. -- Ensure Cargo to be loaded at the soonest. -- Ensure to provide best logsitics project to save your purchase cost. -- Keep update the cargo tracking information for you. Our Certifications: -- IATA: International Air Transport Association. -- NVOCC: Non Vessel Operating Common Carrier. -- WCA: Member of World Cargo Alliance. -- CATA: China Civil Air Transport Sales (Class A) Agency Services. I expect you to try our services for your air cargo to Brazil. I'm sure that our sincerely services can make you feel satisfied.Please don't hesitate to contact with me in any time. B. regards! Sam Peng Sales Dept BEST SERVICES INTERNATIONAL FREIGHT LTD Rm.B13-19, 10/F, Regalia Place, Jiabin Rd, Shenzhen, China. Tel : 86-755-25904212 Fax : 86-755-25901937 / 25901911 Cell Phone : +86-13760303532 E-mail : sales4.szx(a)bsigroup.cc MSN : sampeng8210(a)hotmail.com Skype : sampeng821007 Website: http://www.bestservices.com.cn IATA: 08-3 1624 CATA: ZN30165 FMC: 022856 NVOCC: MOC-NV03395 BSI Own Offices: Shenzhen, Hong Kong, Guangzhou, Zhongshan, Jiangmen, Dongguan, Xiamen, Ningbo, Shanghai, Beijing, Tianjin, Qingdao, Zhengzhou. BSI representative offices: Zhuhai, Shantou, Foshan, Changsha, Nanchang, Fuzhou, Hangzhou, Nanjing, Wuhan, Dalian, Yantai, Lianyungang, Kunming, Chongqing, Chendu and others. All transactions are subject to the Company's Standard Trading Conditions ( copy is available upon request ), which in certain circumstances limit or exempt the Company's liability.

14 years

XCeedCF "SMART CF" (20080820), SMI233

by Arnd Bergmann

arnd@klappe2:~/linux-2.6$ sudo fdisk -lu /dev/sdg Disk /dev/sdg: 16.0 GB, 16039018496 bytes 255 heads, 63 sectors/track, 1949 cylinders, total 31326208 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/sdg1 * 63 31326207 15663072+ c W95 FAT32 (LBA) arnd@klappe2:~/linux-2.6$ sudo hdparm -I /dev/sdg /dev/sdg: CompactFlash ATA device Model Number: SMART CF Serial Number: 2010052503008EDA8EDA Firmware Revision: 20080820 Standards: Supported: 4 Likely used: 6 Configuration: Logical max current cylinders 16383 16383 heads 15 15 sectors/track 63 63 -- CHS current addressable sectors: 15481935 LBA user addressable sectors: 31326208 Logical/Physical Sector size: 512 bytes device size with M = 1024*1024: 15296 MBytes device size with M = 1000*1000: 16039 MBytes (16 GB) cache/buffer size = 1 KBytes (type=DualPort) Capabilities: LBA, IORDY(may be)(cannot be disabled) Standby timer values: spec'd by Vendor R/W multiple sector transfer: Max = 1 Current = 0 Advanced power management level: disabled DMA: not supported PIO: pio0 pio1 pio2 pio3 pio4 Cycle time: no flow control=120ns IORDY flow control=120ns Commands/features: Enabled Supported: SMART feature set Security Mode feature set Power Management feature set WRITE_BUFFER command READ_BUFFER command NOP cmd CFA feature set Advanced Power Management feature set SMART error logging * SMART self-test CFA max advanced io_udma cycle time: 80ns CFA max advanced mem_udma cycle time: 80ns * CFA advanced modes: pio5 *pio6 mdma3 mdma4 *io_udma4 io_udma5 io_udma6 io_udma7 io_udma8 io_udma9 *mem_udma4 mem_udma5 mem_udma6 mem_udma7 mem_udma8 mem_udma9 * CFA Power Level 1 (max 500mA) Security: Master password revision code = 65534 supported not enabled not locked not frozen not expired: security count not supported: enhanced erase 2min for SECURITY ERASE UNIT. HW reset results: CBLID- above Vih Device num = 1 Integrity word not set (found 0x0000, expected 0x1da5) arnd@klappe2:~/git/flashbench$ sudo ./flashbench --open-au /dev/sdc -b 1024 --erasesize=1048576 1MiB 10.8M/s 512KiB 9.21M/s 256KiB 11.2M/s 128KiB 11.1M/s 64KiB 10.9M/s 32KiB 9.63M/s 16KiB 6.66M/s 8KiB 4.63M/s 4KiB 2.04M/s 2KiB 1.82M/s 1KiB 970K/s arnd@klappe2:~/git/flashbench$ sudo ./flashbench --open-au /dev/sdc -b 1024 --erasesize=2097152 2MiB 12.7M/s 1MiB 15.5M/s 512KiB 15M/s 256KiB 17.1M/s 128KiB 15.9M/s 64KiB 16.7M/s 32KiB 15.1M/s 16KiB 11.7M/s 8KiB 6.72M/s 4KiB 3.82M/s 2KiB 2.03M/s 1KiB 1.03M/s arnd@klappe2:~/git/flashbench$ sudo ./flashbench --open-au /dev/sdc -b 1024 --erasesize=4194304 4MiB 17.2M/s 2MiB 17.3M/s 1MiB 17.4M/s 512KiB 17.4M/s 256KiB 16.8M/s 128KiB 16M/s 64KiB 17.1M/s 32KiB 14.8M/s 16KiB 11.8M/s 8KiB 6.96M/s 4KiB 3.77M/s 2KiB 2.02M/s 1KiB 1.03M/s arnd@klappe2:~/git/flashbench$ sudo ./flashbench --open-au /dev/sdc -b 1024 --erasesize=4194304 --random 4MiB 17.4M/s 2MiB 17.2M/s 1MiB 15.5M/s 512KiB 12.8M/s 256KiB 10.5M/s 128KiB 11.9M/s 64KiB 7.63M/s 32KiB 7.96M/s 16KiB 7.55M/s 8KiB 3.36M/s 4KiB 1.83M/s arnd@klappe2:~/git/flashbench$ sudo ./flashbench --open-au /dev/sdc -b 1024 --erasesize=4194304 --random --open-au-nr=3 4MiB 14.9M/s 2MiB 14.8M/s 1MiB 11.3M/s 512KiB 11.8M/s 256KiB 8.63M/s 128KiB 5.46M/s 64KiB 3.78M/s 32KiB 2.2M/s 16KiB 1.15M/s ^C # Assuming 2 MB erase blocks, the card can open 4 of them: arnd@klappe2:~/git/flashbench$ sudo ./flashbench --open-au /dev/sdc -b 1024 --erasesize=2097152 --random --open-au-nr=3 2MiB 14.6M/s 1MiB 13.2M/s 512KiB 11.2M/s 256KiB 8.48M/s 128KiB 10.3M/s 64KiB 10.8M/s 32KiB 7.65M/s 16KiB 6.68M/s 8KiB 2.99M/s 4KiB 1.78M/s ^C arnd@klappe2:~/git/flashbench$ sudo ./flashbench --open-au /dev/sdc -b 1024 --erasesize=2097152 --random --open-au-nr=4 2MiB 13.5M/s 1MiB 13.5M/s 512KiB 13.7M/s 256KiB 9.41M/s 128KiB 11.5M/s 64KiB 10.2M/s 32KiB 7.41M/s 16KiB 6.49M/s 8KiB 3.22M/s 4KiB 1.71M/s arnd@klappe2:~/git/flashbench$ sudo ./flashbench --open-au /dev/sdc -b 1024 --erasesize=2097152 --random --open-au-nr=5 2MiB 13.1M/s 1MiB 14M/s 512KiB 11.8M/s 256KiB 8.4M/s 128KiB 6.77M/s 64KiB 4.66M/s 32KiB 2.81M/s 16KiB 1.46M/s # Not 1 MB erase blocks: arnd@klappe2:~/git/flashbench$ sudo ./flashbench --open-au /dev/sdc -b 1024 --erasesize=1048576 --random --open-au-nr=4 1MiB 13M/s 512KiB 10.4M/s 256KiB 11.7M/s 128KiB 11.2M/s 64KiB 8.9M/s 32KiB 8.34M/s 16KiB 6.22M/s 8KiB 3.23M/s 4KiB 1.76M/s 2KiB 884K/s 1KiB 452K/s arnd@klappe2:~/git/flashbench$ sudo ./flashbench --open-au /dev/sdc -b 1024 --erasesize=1048576 --random --open-au-nr=5 1MiB 12.5M/s 512KiB 10.4M/s 256KiB 10.7M/s 128KiB 6.76M/s 64KiB 5M/s 32KiB 2.77M/s 16KiB 1.48M/s 8KiB 751K/s 4KiB 381K/s 2KiB 189K/s 1KiB 85.4K/s # Something terribly wrong here: arnd@klappe2:~/git/flashbench$ sudo ./flashbench --open-au /dev/sdc -b 1024 --erasesize=2097152 --open-au-nr=4 2MiB 9.72M/s 1MiB 11.1M/s 512KiB 11M/s 256KiB 13.8M/s 128KiB 14.1M/s 64KiB 14.1M/s 32KiB 5.14M/s 16KiB 318K/s 8KiB 158K/s 4KiB 78.9K/s # Repeat: arnd@klappe2:~/git/flashbench$ sudo ./flashbench --open-au /dev/sdc -b 1024 --erasesize=2097152 --open-au-nr=4 2MiB 17.7M/s 1MiB 14.2M/s 512KiB 8.32M/s 256KiB 4.42M/s 128KiB 2.37M/s 64KiB 1.25M/s 32KiB 634K/s # But works with up to three erase blocks: arnd@klappe2:~/git/flashbench$ sudo ./flashbench --open-au /dev/sdc -b 1024 --erasesize=2097152 --open-au-nr=2 2MiB 17.6M/s 1MiB 17.4M/s 512KiB 17.3M/s 256KiB 16.9M/s 128KiB 15.6M/s 64KiB 17.1M/s 32KiB 15.1M/s 16KiB 11.9M/s 8KiB 7.08M/s 4KiB 3.76M/s 2KiB 2.05M/s 1KiB 1.04M/s arnd@klappe2:~/git/flashbench$ sudo ./flashbench --open-au /dev/sdc -b 1024 --erasesize=2097152 --open-au-nr=3 2MiB 17.4M/s 1MiB 15.9M/s 512KiB 17.3M/s 256KiB 17M/s 128KiB 16.2M/s 64KiB 17.1M/s 32KiB 15M/s 16KiB 9.25M/s 8KiB 6.95M/s 4KiB 3.86M/s 2KiB 2.03M/s 1KiB 1.04M/s # offset does not hurt for random access: arnd@klappe2:~/git/flashbench$ sudo ./flashbench --open-au /dev/sdc -b 1024 --erasesize=2097152 --open-au-nr=2 --random --offset=$[16*1024*1024 + 512] 2MiB 11.4M/s 1MiB 11.4M/s 512KiB 8.72M/s 256KiB 9.65M/s 128KiB 9.03M/s 64KiB 8.07M/s 32KiB 6.73M/s 16KiB 3.64M/s 8KiB 2.32M/s 4KiB 1.36M/s 2KiB 648K/s 1KiB 341K/s # No special FAT area: arnd@klappe2:~/git/flashbench$ sudo ./flashbench /dev/sdc --blocksize=1024 --erasesize=2097152 --findfat --fat-nr=6 --random 2MiB 9.26M/s 17.6M/s 17.5M/s 17.2M/s 17.3M/s 17.4M/s 1MiB 11.8M/s 10.6M/s 8.42M/s 8.54M/s 8.29M/s 5.93M/s 512KiB 7.5M/s 9.64M/s 9.58M/s 9.65M/s 9.68M/s 9.59M/s 256KiB 7.3M/s 6.46M/s 6.4M/s 6.42M/s 6.42M/s 6.43M/s 128KiB 7.09M/s 7.04M/s 7.09M/s 7.1M/s 7.11M/s 7.12M/s 64KiB 7.4M/s 7.28M/s 7.46M/s 7.41M/s 7.35M/s 7.41M/s 32KiB 5.83M/s 5.83M/s 5.76M/s 5.82M/s 5.84M/s 5.52M/s 16KiB 4.47M/s 4.43M/s 4.26M/s 4.47M/s 4.47M/s 4.43M/s 8KiB 2.8M/s 2.8M/s 2.78M/s 2.79M/s 2.8M/s 2.78M/s 4KiB 1.4M/s 1.41M/s 1.36M/s 1.4M/s 1.4M/s 1.41M/s 2KiB 698K/s 704K/s 701K/s 703K/s 697K/s 703K/s

14 years

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

14 years

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

14 years

Transcend 8 GB 133x CF (different one)

by Arnd Bergmann

Disk /dev/sdd: 8 GB, 8019099648 bytes 16 heads, 63 sectors/track, 15538 cylinders, total 15662304 sectors Units = sectors of 1 * 512 = 512 bytes Device Boot Start End Blocks Id System /dev/sdd1 * 63 15661295 7830616 b FAT32 sudo dosfsck /dev/sdd1 dosfsck 3.0.9, 31 Jan 2010, FAT32, LFN /dev/sdd1: 1 files, 1/244646 clusters $ sudo ./flashbench -a /dev/sdd --blocksize=1024 --count=100 align 1073741824 pre 599µs on 621µs post 599µs diff 22.6µs align 536870912 pre 581µs on 601µs post 579µs diff 21.4µs align 268435456 pre 586µs on 607µs post 583µs diff 22.1µs align 134217728 pre 590µs on 610µs post 591µs diff 19.5µs align 67108864 pre 593µs on 615µs post 597µs diff 20.4µs align 33554432 pre 584µs on 606µs post 587µs diff 20.2µs align 16777216 pre 587µs on 607µs post 588µs diff 19.4µs align 8388608 pre 583µs on 608µs post 587µs diff 23µs align 4194304 pre 583µs on 604µs post 580µs diff 23.1µs align 2097152 pre 575µs on 601µs post 587µs diff 20.2µs align 1048576 pre 587µs on 588µs post 583µs diff 3.37µs align 524288 pre 583µs on 585µs post 582µs diff 2.6µs align 262144 pre 587µs on 592µs post 592µs diff 2.17µs align 131072 pre 586µs on 585µs post 584µs diff 489ns align 65536 pre 585µs on 587µs post 586µs diff 1.63µs align 32768 pre 592µs on 594µs post 585µs diff 5.5µs align 16384 pre 587µs on 590µs post 586µs diff 3.52µs align 8192 pre 588µs on 605µs post 587µs diff 17.2µs align 4096 pre 585µs on 588µs post 587µs diff 2.27µs align 2048 pre 585µs on 583µs post 581µs diff -189ns $ sudo ./flashbench --open-au /dev/sdd --blocksize=1024 --erasesize=2097152 --open-au-nr=4 --random 2MiB 16.6M/s 1MiB 8.21M/s 512KiB 4.06M/s 256KiB 2.45M/s 128KiB 1.23M/s 64KiB 631K/s 32KiB 315K/s ^C arnd@wuerfel:~/flashbench$ sudo ./flashbench --open-au /dev/sdd --blocksize=1024 --erasesize=2097152 --open-au-nr=1 --random 2MiB 7.23M/s 1MiB 7.22M/s 512KiB 6.36M/s 256KiB 7.84M/s 128KiB 4.76M/s 64KiB 4.64M/s 32KiB 4.49M/s 16KiB 4.25M/s 8KiB 3.43M/s 4KiB 2.44M/s 2KiB 1.19M/s 1KiB 589K/s arnd@wuerfel:~/flashbench$ sudo ./flashbench --open-au /dev/sdd --blocksize=1024 --erasesize=2097152 --open-au-nr=1 --random 2MiB 6.61M/s 1MiB 6.22M/s 512KiB 6.12M/s 256KiB 6.29M/s 128KiB 6.18M/s 64KiB 6.23M/s 32KiB 4.88M/s 16KiB 4.74M/s 8KiB 4.14M/s 4KiB 2.41M/s 2KiB 1.19M/s 1KiB 592K/s arnd@wuerfel:~/flashbench$ sudo ./flashbench --open-au /dev/sdd --blocksize=1024 --erasesize=2097152 --open-au-nr=2 --random 2MiB 7.64M/s 1MiB 12.2M/s 512KiB 8.75M/s 256KiB 4.91M/s 128KiB 4.73M/s 64KiB 4.65M/s 32KiB 3.34M/s 16KiB 4.28M/s 8KiB 3.39M/s 4KiB 2.41M/s 2KiB 1.2M/s 1KiB 587K/s arnd@wuerfel:~/flashbench$ sudo ./flashbench --open-au /dev/sdd --blocksize=1024 --erasesize=2097152 --open-au-nr=2 --random 2MiB 6.41M/s 1MiB 6.55M/s 512KiB 6.3M/s 256KiB 6.18M/s 128KiB 5.77M/s 64KiB 5.76M/s 32KiB 5.46M/s 16KiB 4.79M/s 8KiB 4.26M/s 4KiB 2.46M/s 2KiB 1.19M/s 1KiB 578K/s arnd@wuerfel:~/flashbench$ sudo ./flashbench --open-au /dev/sdd --blocksize=1024 --erasesize=2097152 --open-au-nr=3 --random 2MiB 9.38M/s 1MiB 3.28M/s 512KiB 6.47M/s 256KiB 1.69M/s 128KiB 1.76M/s 64KiB 971K/s 32KiB 479K/s 16KiB 264K/s ^C arnd@wuerfel:~/flashbench$ sudo ./flashbench --open-au /dev/sdd --blocksize=1024 --erasesize=2097152 --open-au-nr=3 --random 2MiB 7.25M/s 1MiB 10.1M/s 512KiB 7.32M/s 256KiB 3.56M/s 128KiB 1.67M/s 64KiB 847K/s ^C arnd@wuerfel:~/flashbench$ sudo ./flashbench --open-au /dev/sdd --blocksize=4096 --erasesize=2097152 --open-au-nr=3 2MiB 24.2M/s 1MiB 24.2M/s 512KiB 24.1M/s 256KiB 23.1M/s 128KiB 8.03M/s 64KiB 22.6M/s 32KiB 20.1M/s 16KiB 16.4M/s 8KiB 10.9M/s 4KiB 6.48M/s arnd@wuerfel:~/flashbench$ sudo ./flashbench --open-au /dev/sdd --blocksize=4096 --erasesize=2097152 --open-au-nr=4 2MiB 24.3M/s 1MiB 12.3M/s 512KiB 3.11M/s 256KiB 1.43M/s 128KiB 690K/s arnd@wuerfel:~/flashbench$ sudo ./flashbench --open-au /dev/sdd --blocksize=4096 --erasesize=1048576 --open-au-nr=3 1MiB 6.41M/s 512KiB 7.56M/s 256KiB 5.67M/s 128KiB 6.82M/s 64KiB 11.2M/s 32KiB 5.43M/s 16KiB 6.74M/s 8KiB 6.59M/s 4KiB 2.98M/s arnd@wuerfel:~/flashbench$ sudo ./flashbench --open-au /dev/sdd --blocksize=4096 --erasesize=1048576 --open-au-nr=4 1MiB 9.22M/s 512KiB 7.75M/s 256KiB 5.87M/s 128KiB 5.91M/s 64KiB 5.97M/s 32KiB 5.81M/s 16KiB 5.46M/s 8KiB 4.45M/s 4KiB 3.28M/s arnd@wuerfel:~/flashbench$ sudo ./flashbench --open-au /dev/sdd --blocksize=4096 --erasesize=1048576 --open-au-nr=5 1MiB 6.64M/s 512KiB 6.48M/s 256KiB 6.25M/s 128KiB 5.38M/s 64KiB 4.59M/s 32KiB 5.27M/s 16KiB 4.98M/s 8KiB 4.16M/s 4KiB 3.03M/s arnd@wuerfel:~/flashbench$ sudo ./flashbench --open-au /dev/sdd --blocksize=4096 --erasesize=1048576 --open-au-nr=6 1MiB 7.76M/s 512KiB 3.37M/s 256KiB 1.64M/s 128KiB 761K/s ^C

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Flashbench-results May 2011