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ブックマーク / www.percona.com (1)

  • OOM relation to vm.swappiness=0 in new kernel

    I have recently been involved in diagnosing the reasons behind OOM invocation that would kill the MySQL server process. Of course these servers were primarily running MySQL. As such the MySQL server process was the one with the largest amount of memory allocated. But the strange thing was that in all the cases, there was no swapping activity seen and there were enough pages in the page cache. Iron

    OOM relation to vm.swappiness=0 in new kernel
    rsakamot
    rsakamot 2016/04/13
    “This obviously changed the way we think about “vm.swappiness=0”. Previously, setting this to 0 was thought to reduce the tendency to swap userland processes but not disable that completely. As such it was expected to see little swapping instead of OOM.”
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