zabbix[vcache,cache,mode] reports "low memory mode" despite <75% of used cache buffer

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    • Type: Problem report
    • Resolution: Fixed
    • Priority: Trivial
    • 5.2 (plan)
    • Affects Version/s: 4.4.8
    • Component/s: Server (S)
    • None
    • Environment:
      Debian 10 Buster amd64
      MariaDB 10.4
      Zabbix server 4.4.8
    • Sprint 65 (Jun 2020)

      Steps to reproduce:

      1. Temporary spike in % value cache used >75%
      2. zabbix[vcache,cache,mode] item switches to 1 = "low memory mode"
      3. Temporary spike drops below 75%
      4. zabbix[vcache,cache,mode] item stays at 1 = "low memory mode"
      5. Only zabbix serevr daemon restart clears trigger

      Result:

      Temporary spike:

      zabbix[vcache,cache,mode]

      Expected:
      Item switches back to 0 after value cache % drops below 75%

        1. memory statistics for value cache size.txt
          22 kB
        2. image-2020-05-28-13-10-20-124.png
          image-2020-05-28-13-10-20-124.png
          38 kB
        3. image-2020-05-27-16-11-13-417.png
          image-2020-05-27-16-11-13-417.png
          31 kB
        4. image-2020-05-27-16-01-24-686.png
          image-2020-05-27-16-01-24-686.png
          34 kB
        5. image-2020-05-27-14-54-44-010.png
          image-2020-05-27-14-54-44-010.png
          28 kB
        6. image-2020-05-27-14-54-22-713.png
          image-2020-05-27-14-54-22-713.png
          28 kB

            Assignee:
            Marina Generalova
            Reporter:
            Marco Hofmann
            Team D
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              Created:
              Updated:
              Resolved: