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Date: Wed, 2 Nov 2011 13:43:32 +0000 (UTC)
From: "Julian Reschke (Commented) (JIRA)" <jira@apache.org>
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Subject: [jira] [Commented] (JCR-3064) Concurrent access performance drop
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    [ https://issues.apache.org/jira/browse/JCR-3064?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13142148#comment-13142148 ] 

Julian Reschke commented on JCR-3064:
-------------------------------------

For jcr2spi, I see NPEs logged in canRead(); maybe the assumption

          // no extra check for existence as method may only be called for existing items.

is incorrect in this case?


> 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-2011.png, ConcurrentReadTest.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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