PNY Attaché Flash Drive - Maximum Reading Speed


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



The best way to find out the maximum reading speed of your PNY Attaché Flash Drive is to run reading 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 reading speed:

             Throughput   Throughput   Latency
Block Size      MBs/sec      IOs/sec        ms
----------   ----------   ----------   -------
      -b16         3.01       192.70         4
      -b64         4.60        73.61        13
     -b256         4.66        18.65        53
    -b1024         4.66         4.66       213
    -b4096         4.67         1.16       854
   -b16384         4.68         0.29      3415
   -b65536         4.67         0.07     13694

As you can see, the maximum reading speed, 4.66 MBs/sec is reached with a block size of "-b256", or 256 KB. As the block size increases higher, the reading speed remains the same at 4.66 MBs/sec.


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I/O Tests on Flash Drives

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2019-07-19, 147👍, 0💬