Confluence Server: Where to enable GC healt check?

[Manuel Bähnisch]

It seems that our Confluence server installation is having some garbage collection difficulties. I found that Atlassian has a Garbage Collection health check in Confluence server (https://confluence.atlassian.com/confkb/health-check-garbage-collection-858578696.html). I couldn't find it though. Any ideas on where to look it up?

GC logging is activated - in case thats necessary.

Thanks allot

Manuel

[Shannon S]

Hello Manuel,

Thank you for contacting us about this.

To confirm, you mean that you already enabled Garbage Collection logging a while ago, but that you don't see any results in your Health Check results?

Can you confirm with me what your Confluence version is, and if you're a server admin on the instance?

Regards,

Shannon

[Manuel Bähnisch]

Hi Shannon,

I'm running Confluence Server 6.8.2 and I'm a server admin on this instance running on a windows machine. Garbage Collection is enabled via the service using the -Xloggc parameter (and others). I also see the gc.log files being created. 

I was expecting to find the health check under General Configuration > Troubleshooting and support tools. Was the GC health check introduced after the version 6.8 release? If so, it might help to state on this page https://confluence.atlassian.com/support/instance-health-790796828.html#InstanceHealth-WhatHealthChecksareavailable? which version it applies to.

Thanks for your help.

Manuel

[Shannon S]

Hello Manuel,

Thank you for your patience.

I was able to confirm that the Garbage Collection Health Check was an experimental feature which has since been removed from Confluence, but the documentation hadn't been removed. That's been corrected now, so I thank you for reporting it.

You will still be able to use the GC Viewer as mentioned in Garbage Collector Performance Issues in order to review your Garbage Collector logs.

Let me know if you have any trouble.

Regards,

Shannon