Zabbix issue I can not fix

[jonvillarealAZED]

I am new to Zabbix. We have a Zabbix server running on Debian and I have been able to fix all issues except one " Zabbix server: Utilization of ODBC poller processes over 75%". I have Googled and played around with the StartPollers and StartPollersUnreachable but can seem to resolve it? Any help would be appreciated. Thanks

[Hamardaban]

It is more useful for you to play with StartODBCPollers

https://www.zabbix.com/documentation/current/en/manual/appendix/config/zabbix_server#startodbcpollers

[jonvillarealAZED]

Changed StartODBCPollers to 100 and problem has been resolved, thank you. I am now getting Zabbix server: Utilization of history syncer processes over 75%. I have set StartHistoryPollers=100, does this need to be increased even more?

[cyber]

StartHistoryPollers has nothing to do with history syncing process.. History pollers are used only for calculated checks.
Number of history syncers is controlled by "StartDBSyncers" parameter. But default value should work ok up to 4k NVPS, so most probably your issue lies somewhere else.... Like slow DB or something...