[Flashbench] USB Stick: 8GB SanDisk Cruzer Micro (2008)

[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