Performance vs. Transfer Size

ATTO does a good job of showing us how sequential performance varies with transfer size. Most controllers optimize for commonly seen transfer sizes and neglect the rest. The optimization around 4KB, 8KB and 128KB transfers makes sense given that's what most workloads are bound by, but it's always important to understand how a drive performs across the entire gamut.

The M5M performs very similarly to Plextor's M5S and M5 Pro, although there is a small drop in write performance between IO sizes of 8KB and 256KB. 

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Performance Consistency AnandTech Storage Bench 2011
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  • JellyRoll - Thursday, April 18, 2013 - link

    Several large enterprise websites have used this methodology for years for numerous types of testing. This method does not give an accurate portrayal of latency performance. It merely gives one second intervals with thousands of IOPS each, which hides the maximum results in among thousands of other I/O.
  • puppies - Wednesday, April 17, 2013 - link

    Spelling mistake in the 3rd line. Should be controlled not controller.

    Great article btw :D.
  • Kristian Vättö - Thursday, April 18, 2013 - link

    Fixed! Thanks for the heads up :-)
  • iwodo - Thursday, April 18, 2013 - link

    And we have to wait till Broadwell Chipset before we get SATA Express with ( hopefully ) 16Gbps.
  • abhilashjain30 - Monday, July 29, 2013 - link

    You can purchase online from SSD Portal ( )
  • abhilashjain30 - Thursday, September 26, 2013 - link

    Recently buy from onlyssd dot com, I got within 2 working days from the order date. Drive working fine....I think in mSATA drive Plextor is better option compare to crucial n more.

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