Details

    • Type: Incident report
    • Status: Closed
    • Priority: Critical
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: None
    • Component/s: Server (S)
    • Labels:
      None

      Description

      We encounter a problem with the history syncer process. The history syncer process reaches 100% CPU while processing log items. According to the process information it takes always around 60 seconds to import a few 100 items. As a result the history write cache decreases.

      After doing a lot of tests, I may exclude issues with the DB. There are also no slow queries reported. Checking the process with strace I notice that the process is doing constantly semop and brk operations very fast. (see attachements)

      Also the debuglog of the zabbix-server reports constantly substitute functions.

      We encounter the issue with Zabbix 3.2 and 3.4.

      I think there is an issue on processing logdata.

        Attachments

        1. debuglog.txt
          13 kB
        2. item.config.png
          item.config.png
          16 kB
        3. item.config2.png
          item.config2.png
          11 kB
        4. strace_output.txt
          23 kB
        5. Top.PNG
          Top.PNG
          17 kB

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              • Assignee:
                ArtursL Arturs Lontons
                Reporter:
                burgi Egon Burgener
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                • Created:
                  Updated:
                  Resolved: