SanDisk Cruzer Micro Flash Drive - Maximum Writing Speed

Q

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

✍: FYIcenter.com

A

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.

 

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2019-07-19, 147👍, 0💬