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https://issues.apache.org/jira/browse/JCR-1037?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12518402
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Jukka Zitting commented on JCR-1037:
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Do you have multiple sessions accessing the repository? Do you ever close the
sessions?
The trace seems to suggest that the total number of caches (there's one
associated with each session) keeps increasing and since there is a 128kB
minimum allocated size per each cache (this minimum per cache overrides the
global maximum cache allocation) having more and more sessions would nicely
explain the behaviour you are seeing.
> Memory leak causing performance problems
> ----------------------------------------
>
> Key: JCR-1037
> URL: https://issues.apache.org/jira/browse/JCR-1037
> Project: Jackrabbit
> Issue Type: Bug
> Components: Jackrabbit API
> Affects Versions: 1.2.1, 1.2.2, 1.2.3, 1.3
> Environment: Tomcat 6.0, XP Pro w/1Gb
> Reporter: Antonio Carballo
> Attachments: JCR-Trace.txt
>
>
> Folks,
> We have been running tests on JCR v1.3 and v1.2.1 for the past two weeks. The
> system keeps running out of memory after X number of documents are added. Our
> initial test consisted of about 50 documents and gradually increased to about
> 150 documents. The size of the documents ranged from 1K to 9MB. We later
> changed the test to consist of files with less than 1K in length with the
> same result. Increasing the heap size delays the error but the outcome is
> always the same (Servlet runs out of heap memory.)
> Using JProbe we found a high number of references created by the caching
> sub-system (SessionItemStateManager.java, SharedItemStateManager.java,
> LocalItemStateManager.java). We changed the caching parameters using
> CacheManager (min 64K - max 16MB). This change only delayed the error.
> Servlet eventually runs out of heap memory.
> We are more than happy to share our findings (even source code and test data)
> with the Jackrabbit team. Please let us know how you wish to proceed.
> Sincerely,
> Antonio Carballo
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