PNY Attaché Flash Drive - Maximum Writing Speed

Q

What is maximum writing speed of the PNY Attaché Flash Drive (256 MB capacity)?

✍: FYIcenter.com

A

The best way to find out the maximum writing speed of your PNY Attaché 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         0.25        16.53        60
      -b64         1.02        16.33        60
     -b256         2.79        11.19        88
    -b1024         4.07         4.07       245
    -b4096         4.59         1.14       870
   -b16384         4.73         0.29      3375
   -b65536         4.76         0.07     13428

As you can see, the maximum writing speed, 4.76 MBs/sec is reached with a block size of "-b65536", or 64 MB.

Put together with the maximum reading speed of 4.67 MBs/sec, now we know that speed limit of PNY Attaché Flash Drive is about 4.70 MBs/sec for both reading and writing.

 

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2019-07-19, 148👍, 0💬