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https://issues.apache.org/jira/browse/JCR-3721?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Maxim Zinal updated JCR-3721:
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Status: Patch Available (was: Open)
This small patch replaces current NodeId.toString() with a faster version.
> Slow and actively called NodeId.toString()
> ------------------------------------------
>
> Key: JCR-3721
> URL: https://issues.apache.org/jira/browse/JCR-3721
> Project: Jackrabbit Content Repository
> Issue Type: Bug
> Components: jackrabbit-core
> Affects Versions: 2.7, 2.6.5
> Environment: Debian/GNU Linux 7.3 / Oracle JDK 7 / Apache Tomcat 7.0;
> Windows Server 2008 / IBM WebSphere AppServer 7.0
> Reporter: Maxim Zinal
>
> I performed some JackRabbit profiling while trying to investigate the reason
> of low performance of our application.
> The mostly interesting thing I've found is that NodeId.toString() method is
> heavily used for hierarchy-based XPath queries, and it performs really bad.
> This are the numbers for my test application:
> - Total CPU time: 879 178 msec
> - CPU time in NodeId.toString(), including subcalls: 223 705 msec
> A quick check against NodeId.toString() implementation shows that it is based
> on UUID.toString(), which itself is very ineffective in both in Oracle and
> IBM JDK.
> I've wrote a quick replacement for this method, and my measurements show that
> overall performance became significantly better for our case.
> Hope that this will help to improve JackRabbit performance for similiar
> applications.
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