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EnhanceIO, Bcache & DM-Cache Benchmarked

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  • EnhanceIO, Bcache & DM-Cache Benchmarked

    Phoronix: EnhanceIO, Bcache & DM-Cache Benchmarked

    Three different Linux disk caching methods for the Linux kernel were compared: EnhanceIO, Bcache, and DM-Cache. But which of these disk caching methods is the fastest when mixing SSDs and HDDs? Here's some results...

    http://www.phoronix.com/vr.php?view=MTM4ODA

  • #2
    Why the fsck are bcache and EnhanceIO flushing if the upper layers don't request it? Is there a problem with the io stack that is being worked around, or is it entirely superfluous?

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    • #3
      Also, EnhanceIO having lower write latency than the HDD in write-through mode seems suspect.

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      • #4
        I wonder why people keeps adding "confidential information" warnings to their posts to an open mailing list...

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        • #5
          Bias perhaps?
          Stec Inc made EnhanceIO

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