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  1. Couchbase Server
  2. MB-20235

memcached at very high CPU since spock build 904

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Details

    • Bug
    • Resolution: Fixed
    • Critical
    • 5.0.0
    • 5.0.0
    • None
    • Untriaged
    • Unknown

    Description

      A couple of days ago we started seeing build-sanity failures on Centos7 only (MB-20215 and MB-20216). This was strange because

      • it passed on other platforms and
      • same tests passed when QE ran them.

      I was really not sure what was causing this, when Wayne mentioned yesterday that the machine that is hosting a bunch of build sanity VMs were consistently running at 100% CPU. This led me to investigate this a little further and it turns out that while running build 904 (or greater)the memcached process gets to 350-380% of CPU. And pretty much stays that way for the entirety of test suite.

      I ran this multiple times on both centos and ubuntu (builds 903 vs 904) and was able to see memcached going crazy with build 904.

      Changelog for build 904: http://172.23.120.24/builds/latestbuilds/couchbase-server/spock/904/CHANGELOG

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          relates to

          Bug - A problem which impairs or prevents the functions of the product. MB-20286 DCP observe regression between 4.5.1 build 2727 and 2756

          • Major - Major loss of function.
          • Closed
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              jwalker Jim Walker
              hari.kodungallur hari kodungallur (Inactive)
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              Dates

                Created:
                Updated:
                Resolved:

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