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Type: Problem report
Resolution: Fixed
Priority: Critical
Fix Version/s: 3.4.7rc1, 4.0 (plan)
Affects Version/s: 3.4.5, 3.4.6
Component/s: Server (S)
Labels:
- performance
Environment:

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Debian Jessie
MariaDB 10.0 (upgraded to 10.2 on 14.01. ~20:00)
Zabbix 3.4.5 and 3.4.6
Some config values that could be related:
HistoryCacheSize=512M
HistoryIndexCacheSize=128M
TrendCacheSize=512M
ValueCacheSize=512M

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Debian Jessie MariaDB 10.0 (upgraded to 10.2 on 14.01. ~20:00) Zabbix 3.4.5 and 3.4.6 Some config values that could be related: HistoryCacheSize=512M HistoryIndexCacheSize=128M TrendCacheSize=512M ValueCacheSize=512M

Sprint:
Sprint 26
Story Points:
1

Steps to reproduce:
We updated from 3.4.3 to 3.4.5 (13.01. 00:45) and got serious performance issues.
Result:
See history syncer usage in
We have delays in graphs up to 15 minutes after HH:00 and with the history syncer processes on 100%, so perhaps it has something to do with the trends. See

Expected:
Like before 13.01. 00:45, nearly no history syncer usage, just some peaks still below 50%.