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  • abjornson
    Member
    • Oct 2013
    • 34

    #1

    regular hourly performance hits

    Hello,

    I'm running Zabbix 2.4.8 on Ubuntu 14.04.4. The backend is mysql on Amazon RDS. I have a single proxy in passive mode which monitors 95% of my hosts.

    My question is this:

    I frequently notice a phenomenon where I see very regular, hourly performance hits in the server's zabbix server performance graphs. During these 2-3 minute periods, the servers VPS drops to zero, and of course a backlog builds. After 2-3 minutes, VPS goes back up, and the backlog is cleared after 10-30 minutes.

    Screenshots below:





    Note the precise regularity / spacing of the intervals.

    My issue is that I can't figure out what is causing these. Of course I first thought of the housekeeper....but my housekeeper is set to run every 2 hours, not every 1. (you can see this below)



    I can't find anything else that is spiking on this same regular interval that might be causing the problem.

    Any suggestions how I can track this down?
  • glebs.ivanovskis
    Senior Member
    • Jul 2015
    • 237

    #2
    Do you monitor trend cache? Does it show similar patterns?

    It could be this, but I would expect vps drop at 55 minutes, not at 50.

    Comment

    • abjornson
      Member
      • Oct 2013
      • 34

      #3
      Hi and thanks for your response!

      I do monitor the trend cache, and I don't see a similar pattern there.

      Comment

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