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Posted to commits@wicket.apache.org by "Andrea Del Bene (JIRA)" <ji...@apache.org> on 2018/01/23 08:51:00 UTC
[jira] [Assigned] (WICKET-6522) ThreadLocal leak in
PageStoreManager
[ https://issues.apache.org/jira/browse/WICKET-6522?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Andrea Del Bene reassigned WICKET-6522:
---------------------------------------
Assignee: Andrea Del Bene
> ThreadLocal leak in PageStoreManager
> ------------------------------------
>
> Key: WICKET-6522
> URL: https://issues.apache.org/jira/browse/WICKET-6522
> Project: Wicket
> Issue Type: Bug
> Components: wicket
> Affects Versions: 7.9.0
> Environment: Wildfly 10 on CentOS 7 Linux.
> Reporter: Klaasjan Brand
> Assignee: Andrea Del Bene
> Priority: Major
>
> One of our heavy-used Wicket production applications has developed 'interesting' behaviour since upgrading to 7.9.0: after a while the system becomes slower and seems to need more CPU time to handle the same amount of requests. Threaddumps exposed that a lot of CPU time was consumed by java.lang.ThreadLocal$ThreadLocalMap.getEntryAfterMiss, pointing to a ThreadLocal leak.
> After making a heapdump (20g) of one of our servers we found lots of ThreadLocalMap$Entry objects referenced by org.apache.wicket.page.PageStoreManager$SessionEntry$1 containing the value Boolean.FALSE.
> Seems that boolean is new behaviour introduced by the fix for WICKET-6465 and is causing complications on servers like Wildfly we use which don't recycle threads.
>
>
>
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