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From "Jukka Zitting (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (JCR-3064) Concurrent access performance drop
Date Wed, 09 Nov 2011 12:18:51 GMT

    [ https://issues.apache.org/jira/browse/JCR-3064?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13146978#comment-13146978
] 

Jukka Zitting commented on JCR-3064:
------------------------------------

Hmm, this actually seems like as simple as the change of the default security manager, see
JCR-2834 (revisions 1043343 and 1043430). Before that the tests were using SimpleSecurityManager
so no security checks were being made at all.

Assuming this is the culprit, then I guess we should simply resolve this issue as Not A Problem
since the comparison is between two completely different setups.
                
> Concurrent access performance drop
> ----------------------------------
>
>                 Key: JCR-3064
>                 URL: https://issues.apache.org/jira/browse/JCR-3064
>             Project: Jackrabbit Content Repository
>          Issue Type: Bug
>            Reporter: Jukka Zitting
>            Priority: Blocker
>             Fix For: 2.4
>
>         Attachments: ConcurrentReadTest-2.3.png, ConcurrentReadTest-2011.png, ConcurrentReadTest.png,
ConcurrentReadWriteTest-2.3.png, ConcurrentReadWriteTest-2011.png, ConcurrentReadWriteTest.png,
JCR-3064-EntryCollector.patch, visualvm-ConcurrentReadTest-2.2.png, visualvm-ConcurrentReadTest-2.3.png
>
>
> Our performance tests show a pretty bad drop in concurrent access performance (both read
and write) in the latest trunk when compared to Jackrabbit 2.2. We need to track down the
cause and fix it before the 2.3 release.

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