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http://jira.magnolia.info/browse/MAGNOLIA-1998?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15619#action_15619
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Yuanhua Qu commented on MAGNOLIA-1998:
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I set the JVM max size to be 128M and it did show the mem usuage stable after
each fgc hit. Here is the graph I got in the attachment
Mag3.5Jackrabbit1.3.3_memGraph_128M.JPG . This is much better than magnolia
3.0.5 with jackrabbit1.3.3 which shows mem climbing after each fgc. My
concern for magnolia 3.5 with jackrabbit 1.3.3 is what is the influence to the
application's performance if mem only get stable after each fgc happens .
From the graphic, we can see that heap still grows fast after each minor
collection. Looks like lots of objects get longer life time and push to Old
space will will trigger fgc when old space is full.
> Potential memory leak: investigation.
> -------------------------------------
>
> Key: MAGNOLIA-1998
> URL: http://jira.magnolia.info/browse/MAGNOLIA-1998
> Project: Magnolia
> Issue Type: Task
> Reporter: Vivian Steller
> Assignee: Boris Kraft
> Priority: Critical
> Attachments: Mag3.0.5Jackrabbit1.3.3_memGraph.JPG,
> Mag3.5Jackrabbit1.3.3_memGraph.JPG, Mag3.5Jackrabbit1.3.3_memGraph_128M.JPG,
> magnoliaMemLeak_toMag.doc
>
>
> Several users have reported memory issues. We're creating this issue to
> collect information, reports and other evidence. Please attach relevant files
> and leave comments on your experiences. Thanks!
> *Current status:*
> * We're investigating about this issue, but we're lacking evidence of a real
> leak in Magnolia 3.5 when used with an external database at the moment. (see
> comments below)
> * There have been too many architectural changes in 3.5 to backport the fixes
> to the 3.0 branch
> * The following definitely helps:
> ** Using an external database such as MySQL
> ** Using Jackrabbit 1.3.x
> ** Using *Magnolia 3.5.x*
> * If you're experiencing OutOfMemoryError: PermGen space, you need to
> increase the -XX:MaxPermSize JVM setting.
> * If you're still having memory issues after applying the above advices,
> please report them here with the following information:
> ** Operating system:
> ** Java version:
> ** Container (tomcat, jetty, ...) and version:
> ** Precise JVM settings (JAVA_OPTS, CATALINA_OPTS, ...)
> ** How is your container started:
> ** Is there any specific operation that triggers your memory issues?
> ** Any stacktraces or relevant log files (in attachment, with your name
> in the filename, please)
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