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Latest Data generating Huge amount of queries

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  • sjoshi0@walmartlabs.com
    Junior Member
    • Jun 2015
    • 9

    #1

    Latest Data generating Huge amount of queries

    Hi Zabbix Experts,

    We have a medium-sized setup (I don't know if thats the right characterization)
    Here's our Dashboard for you to get some context

    Parameter Value Details
    Zabbix server is running Yes
    localhost:10051
    Number of hosts (enabled/disabled/templates)
    368 304 / 1 / 63
    Number of items (enabled/disabled/not supported)
    22022 17752 / 214 / 4056
    Number of triggers (enabled/disabled [problem/ok])
    5046 1703 / 3343 [284 / 1419]
    Number of users (online) 12 3
    Required server performance, new values per second
    318.21 -

    As you can see we just over 300 hosts, 20k items and a dozen users.
    The NVP is just over 315 !

    What we have been seeing is that when we navigate to "Latest data" page under Monitoring tab...
    I see that zabbix is generating a lot of HUGE queries and sending it to our PostgreSQL database.


    Our setup for almost (95%) of the items is to collect the metric every minute, store the History data for 7 days and trends data for 365 days.
    We have a Screen refresh for each user set at 300 sec. and at any time there are no more than 3 to 5 users looking.

    For the following workloads,

    0> Is this EXPECTED that we see many such BIG queries ?
    1> I also see that there's a select count(*) from history query which is by far THE MOST expensive query that gets fired VERY often. I see it being fired almost every 10 secs (and many times even quicker)
    2> Is there a way to stop the count query above fired or reduce its frequency.

    Please advice.
  • LenR
    Senior Member
    • Sep 2009
    • 1005

    #2
    What version of zabbix?

    Comment

    • sjoshi0@walmartlabs.com
      Junior Member
      • Jun 2015
      • 9

      #3
      We are using Zabbix 2.4.5 for our Server

      Comment

      • LenR
        Senior Member
        • Sep 2009
        • 1005

        #4
        Check the usage statistics for value cache and the other server cache statistics.

        Comment

        • geniepage
          Member
          • Sep 2015
          • 34

          #5
          I agree with checking of cache stats. Check graph - Zabbix cache usage.

          Comment

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