[ZBXNEXT-2816] Timer process uses only one core (Use "No data collection" in maintenance periods) Created: 2015 May 18  Updated: 2020 Jul 30  Resolved: 2020 Jul 30

Status: Closed
Project: ZABBIX FEATURE REQUESTS
Component/s: Server (S)
Affects Version/s: 2.4.5
Fix Version/s: None

Type: Change Request Priority: Minor
Reporter: Rodin Mikhail Assignee: Zabbix Development Team
Resolution: Duplicate Votes: 0
Labels: maintenance, performance
Remaining Estimate: Not Specified
Time Spent: Not Specified
Original Estimate: Not Specified
Environment:

Centos 6.5 (64 bit), Zabbix 2.4.5


Issue Links:
Duplicate
duplicates ZBXNEXT-1472 Support of parallel processing of tim... Closed

 Description   

In large environment, where the hosts go out of maintenance periods zabbix.timer process is fully utilization one CPU core and blocking the work of the monitoring system.

Maintenance periods: ~300
Hosts: ~20000

If you use maintenance periods with the option "With data collection" - the problem is not repeated.



 Comments   
Comment by Marc [ 2015 May 18 ]

Similar to ZBX-8630. Although there is apparently a difference regarding data collection.

Comment by Oleksii Zagorskyi [ 2015 May 19 ]

(1) [D]
According to documentation only one timer process is responsible to service maintenance periods.
I've updated documentation 2012/10/25 20:22 according to ZBXNEXT-1472 in https://www.zabbix.com/documentation/2.2/manual/maintenance?do=diff&rev2%5B0%5D=1349248457&rev2%5B1%5D=1351185731&difftype=sidebyside
But later 2013/02/25 12:25 the detail has been lost in https://www.zabbix.com/documentation/2.2/manual/maintenance?do=diff&rev2%5B0%5D=1355907584&rev2%5B1%5D=1361787917&difftype=sidebyside

It's mentioned also on https://www.zabbix.com/documentation/2.2/manual/appendix/config/zabbix_server:

Only the first timer process handles the maintenance periods.

The lost detail should be returned.

Comment by Rodin Mikhail [ 2015 May 19 ]

It may be worth to redesign the timer process mechanism?

Comment by Alexander Vladishev [ 2020 Jul 30 ]

Closed as duplicate of ZBXNEXT-1472.

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