Confluence Server Slow Dwon

satreci_jdzbd0

 

 

Hi

 

There is a periodic slowdown during operation.

I checked realted logs. This logs are continuously output.

2019-05-29 11:16:38,517 WARN [alert-dispatch:thread-1] [confluence.alert-log] log 1559096198513 ; WARNING ; JVM ; JVM-1002 ; Garbage collection exceeded time limit ; not-detected ;  ;  ; {"durationInMillis":10222,"windowInMillis":20000,"limitPercent":10,"threadMemoryAllocations":"","threadDump":[]}
2019-05-29 11:16:38,520 WARN [alert-dispatch:thread-1] [atlassian-monitor] log 2019-05-29T02:16:38.513Z Component 'Java' alerted 'Garbage collection exceeded time limit' (details: {"durationInMillis":10222,"windowInMillis":20000,"limitPercent":10,"threadMemoryAllocations":"","threadDump":[]}, trigger: {"pluginKey": "not-detected"})

 

Restarting Confluence is fine for a while(about 2 weeks).

 

Our Confluence Server Version is 6.13.4.

We use Bitbucket, Confluence and Jira on one server. (100 user license)

• Real user is about 60.
• Server Memory : 32G

 

I thik the suspicious part is as follows

• Configuration
  • Server.xml
    • maxThreads : 100
  • confluence.cfg.xml
    • hibernate.c3p0.max_size : 125
• Backup
  • We perform the backup at dawn. Looking at the results of the monitoring, it seems that memory is being used at the maximum.
  • 

 

How can we solve this problem?

 

Thank you for your help.

 

 

 

sara_6nw0oa

Long GC pause can cause performance issues.For GC tuning please refer.

 

https://confluence.atlassian.com/enterprise/garbage-collection-gc-tuning-guide-461504616.html