Too many processes busy

[stepassia]

Hi to all, I've a problema with my zabbix server.
Several times per day (4 or 5) zabbix fire the busy triggers (like Zabbix history syncer processes more than 75% busy or Zabbix alert syncer processes more than 75% busy) and, at the same time, any zabbix agent can't be reached (with hundred alert mail).

This my zabbix parameter:

• Zabbix server is running Yes localhost:10051
• Number of hosts (enabled/disabled) 126 108 / 18
• Number of templates 85
• Number of items (enabled/disabled/not supported) 13932 9583 / 3471 / 878
• Number of triggers (enabled/disabled [problem/ok]) 6627 2886 / 3741 [12 / 2874]
• Number of users (online) 16 3
• Required server performance, new values per second 65.46

Virtual Server detail:

• Database: mysql on localhost
• RAM: 3.5Gb
• CPU: 2

And the Zabbix Server Configuration:

• StartPollers=30
• StartPollersUnreachable=50
• StartPingers=15
• StartDiscoverers=3
• StartAlerters=5
• VMwareCacheSize=64M
• HousekeepingFrequency=1
• MaxHousekeeperDelete=0
• CacheSize=256M
• HistoryCacheSize=1024M
• HistoryIndexCacheSize=128M
• TrendCacheSize=256M
• ValueCacheSize=256M
• Timeout=5
• LogSlowQueries=1500

Any idea to solve this issue?
Thanks a lot!
Stefano

[stepassia]

Thank you Cyber!

[cyber]

I think you have unreasonably many Pollers and pingers for such small amount of hosts and items.

MaxHousekeeperDelete=0 ... docs say about this "If set to 0 then no limit is used at all. In this case you must know what you are doing, so as not to overload the database! ^2"

[cyber]

Then maybe other paramters of your servers are a small, if possible add some memory and cpu. Considering you have DB on same host as server, it may be a bit too few....

[cyber]

Its just my gut feeling, so don't take it as a fact, but I think alerter, http poller and LLD messages are the result and history syncer is the reason... I can see similar behaviour sometimes in our environment also... if in some reason history syncer is busy, at same time LLD queue goes up... History syncer needs quick DB. But I am not too good on any of this platform stuff.. I do not have any suggestions for you here...