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ブックマーク / underthehood.meltwater.com (1)

  • Riak, Elasticsearch and numad walk into a Red Hat

    What starts like a joke is really a serious post about large distributed systems. This is what we run at meltwater - and while there is a lot of fun designing and administering these systems, we run into odd problems from time to time. In this case: some well-meant Red Hat memory optimisations interfering with Riak performance. There is a lot of talk around “Big Data” in the industry - and here at

    Riak, Elasticsearch and numad walk into a Red Hat
    yass
    yass 2015/04/25
    " The automatic numa management through numad can result in long (120+ seconds) application pauses. The Transparent HugePage (THP) feature can slow down memory access and through that increase latency of your applications. "
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