What is maximum writing speed of the SanDisk Cruzer Micro 8GB Flash Drive?

The best way to find out the maximum writing speed of your SanDisk Cruzer Micro 8GB Flash Drive is to run writing tests with a single large block of different block sizes:

sqlio -LS -kR -i1 -f1 -t1 -s60 -p0 ...

If we run SQLIO with above options and different block sizes, we should be able to find the maximum writing speed:

             Throughput   Throughput   Latency
Block Size      MBs/sec      IOs/sec        ms
----------   ----------   ----------   -------
      -b16         0.03         2.45       406
      -b64         0.14         2.38       418
     -b256         0.57         2.29       434
    -b1024         1.05         1.05       951
    -b4096         3.72         0.93      1073
   -b16384         5.32         0.33      3006
   -b65536         6.36         0.09     10048
  -b262144         6.69         0.02     38230

As you can see, the maximum writing speed, 6.69 MBs/sec is reached with a block size of "-b262144", or 24 MB.

Comparing to the maximum reading speed of 25.76 MBs/sec, the maximum writing speed of 6.69 MBs/sec is about 3.5 times slower.

⇒ Kingston DataTraveler 101 Flash Drive - 64-KB Benchmark

⇐ SanDisk Cruzer Micro Flash Drive - Maximum Reading Speed

⇑ I/O Tests on Flash Drives

⇑⇑ SQLIO Disk I/O Benchmark Test Tutorials