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  1. ZABBIX FEATURE REQUESTS
  2. ZBXNEXT-4661

Excessive unexplained value cache hits leads to poor zabbix server performance

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    • Icon: Change Request Change Request
    • Resolution: Won't fix
    • Icon: Major Major
    • None
    • 3.4.11
    • Server (S)
    • None
    • Zabbix 3.4.11 Server, 8 * Zabbix 3.4.11 Proxies
      Centos 7
      Postgresql 10

      Hi,

      We have this issue where there is an unexplained huge jump in Value Cache hits in which we then experience a build up in the History cache until we restart the server. This happens regularly ie every week or two.

      I have included several graphs for the last 7 day period. Clearly you can see at approx 2-3pm yesterday there was a massive jump in value cache hits without a massive jump in monitoring configuration and the history cache starting to rise at the exact same time.

      I have attached several graphs which show this value cache hits, process performance, cache capacity, value performance and monitoring configuration graphs. 

      Regards

      James

        1. Zabbix Server - Configuration Cache.JPG
          57 kB
          James Cook
        2. Zabbix Server - History Cache.JPG
          57 kB
          James Cook
        3. Zabbix Server - History Syncer Process.JPG
          70 kB
          James Cook
        4. Zabbix Server Monitored Hosts Items Triggers.JPG
          71 kB
          James Cook
        5. Zabbix Server - Timer Process.JPG
          70 kB
          James Cook
        6. Zabbix Server - Value Cache.JPG
          56 kB
          James Cook
        7. Zabbix Server - Value Cache Hits.JPG
          59 kB
          James Cook
        8. Zabbix Server - Value Performance.JPG
          88 kB
          James Cook
        9. Zabbix Template With Yesterdays changes.xml
          27 kB
          James Cook

            Unassigned Unassigned
            james.cook000@gmail.com James Cook
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              Created:
              Updated:
              Resolved: