Zabbix 2.2.0 Problems with processes poller and syncer (100%) every day

[patrick]

Hi,
Every morning during about 1 hour I have problems with SNMP Polling. Many items are waiting to be updated. Processes poller and syncer are 100% busy.
I don't see any specific system process running at this moment.
I have many calculated items. Is it a possible problem? How can I optimize the installation?
Thank you
Patrick

Some screenshots :Zabbix-Processes and items-queue




Some parameters of my server conf :
# DebugLevel=3
# StartPollers=5
# StartIPMIPollers=0
# StartPollersUnreachable=1
# StartTrappers=5
# StartPingers=1
# StartDiscoverers=1
# StartHTTPPollers=1
# StartTimers=1
# StartJavaPollers=0
# StartVMwareCollectors=0
# StartSNMPTrapper=0


# HousekeepingFrequency=1
# MaxHousekeeperDelete=500
CacheSize=16M
# CacheUpdateFrequency=60
# StartDBSyncers=4
# HistoryCacheSize=8M
# TrendCacheSize=4M
# HistoryTextCacheSize=16M
ValueCacheSize=16M

[tchjts1]

Hi Patrick. It looks like you are using many of the Zabbix default values, such as StartPollers=5

There are a a few other graphs regarding Zabbix processes which you should also look at. Please refer to the bottom of my post here: https://www.zabbix.com/forum/showthread.php?t=41219

You need to look at all of these to make an informed decision on what parameters to adjust. Certainly take a look at your cache graphs and see how well that is performing. I have had to adjust my cache settings several times as I add in more and more monitored hosts.

But at first glance from what you have shown, I would increase your StartPollers to maybe 15 and see if that helps.

Also in your zabbix_server.conf file is a setting for Timeout= which by default is 3. Try bumping that up to 10 or 15.

Any changes to zabbix_server.conf require you to restart the Zabbix server process.