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  • misch
    Junior Member
    • Jan 2010
    • 28
    #1

    Zabbix queue

    Hi,

    as my zabbix installation is growing big over time I see more and more items queuing up. On the average I have 15 items in my queue running between 5 sec and 10 sec and 10 items queuing between 10 and 30 secs. From time to time Zabbix catches up with all and shows a empty queue, but anyway I somehow feel uneasy about Zabbix queing checks too long.

    What are the main parameters where I can influence the performance of zabbix? I think I maxed out my database already.

    Greetings,

    Michael.
    Tags: None
    • Sparky
      Member
      • Jun 2010
      • 54
      #2
      What are the item types that are in the queue?

        Comment

        • misch
          Junior Member
          • Jan 2010
          • 28
          #3
          Mainly SNMP because. Running snmpget from the command line I get the answer fast, in less than 1 sec.

          But I also have queued Zabbix items and simple checks.

            Comment

            • Sparky
              Member
              • Jun 2010
              • 54
              #4
              Originally posted by misch
              Mainly SNMP because. Running snmpget from the command line I get the answer fast, in less than 1 sec.

              But I also have queued Zabbix items and simple checks.
              Something that worked for me was to increase the values of pollers etc in the zabbix_server.conf file. Now I almost never have anything over 5 seconds waiting.

                Comment

                • misch
                  Junior Member
                  • Jan 2010
                  • 28
                  #5
                  I have:

                  StartPollers=32
                  CacheSize=128M
                  StartDBSyncers=16
                  HistoryCacheSize=128M
                  TrendCacheSize=128M

                    Comment

                    • misch
                      Junior Member
                      • Jan 2010
                      • 28
                      #6
                      OK. As soon as I get more then 24 new value per second the queue is buildung up and cannot be dequeued any more by zabbix.

                      Any further performance hints?

                      Thanks.

                        Comment

                        • angelhc
                          Senior Member
                          Zabbix Certified Specialist
                          • Nov 2009
                          • 226
                          #7
                          On the conf file:
                          ### Option: StartPollers
                          # Number of pre-forked instances of pollers.
                          # You shouldn't run more than 30 pollers normally.

                          Who knows why we shouldn't run more than 30 pollers??
                          Thanks!
                          Number of hosts 1600,Number of items +90k,Number of triggers +22k, Number of users +100, New values per second +1270

                          http://zabbixes.wordpress.com/

                            Comment

                            • misch
                              Junior Member
                              • Jan 2010
                              • 28
                              #8
                              Set the StartPollers to 8 and the queue ist building up even worse. Any idea?

                                Comment

                                • richlv
                                  Senior Member
                                  Zabbix Certified Trainer
                                  Zabbix Certified SpecialistZabbix Certified Professional
                                  • Oct 2005
                                  • 3112
                                  #9
                                  was the duplicate thread created at http://www.zabbix.com/forum/showthread.php?t=21191 ?

                                  what's the iowait on the system ?
                                  any error or warning messages in the zabbix server logfile ?
                                  Zabbix 3.0 Network Monitoring book

                                    Comment

                                    • misch
                                      Junior Member
                                      • Jan 2010
                                      • 28
                                      #10
                                      Solved: Excessive queing

                                      Problem solved!

                                      One host with a large amount of items was configured wrong. So all SNMP requests ran into a timeout and did not return "OID not available". This build up quite a huge queue and a lot of other checks did timeout also.

                                      Greetings,

                                        Comment

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