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http://jira.codehaus.org/browse/MNG-5077?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jörg Waßmer updated MNG-5077:
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Attachment: MNG-5077-maven-model-builder.patch
Attached patch.
> Performance of StringSearchModelInterpolator could be much better
> -----------------------------------------------------------------
>
> Key: MNG-5077
> URL: http://jira.codehaus.org/browse/MNG-5077
> Project: Maven 2 & 3
> Issue Type: Improvement
> Components: Inheritance and Interpolation
> Affects Versions: 3.0.3
> Environment: Maven 3.0.3 trunk
> Reporter: Jörg Waßmer
> Priority: Minor
> Attachments: MNG-5077-maven-model-builder.patch
>
>
> Currently I am investigating performance problems with the large project
> trees (100+ projects).
> The main cause is the Netbeans Maven Plugin, but I also found and fixed a
> bottleneck in Maven itself, in class
> org.apache.maven.model.interpolation.StringSearchModelInterpolator.
> I created a patch against the today's Maven 3 trunk,
> https://svn.apache.org/repos/asf/maven/maven-3/trunk.
> It does following:
> - don't use AccessController if no SecurityManager is active.
> - don't call java.lang.reflect.Field.setAccessible(false). It is not
> necessary, because the Field object are never exposed to outside the class.
> - getFields(Class) now determines which fields are qualified for
> interpolation, instead of determining it again on each call to
> traverseObjectWithParents().
> The behaviour is exactly the same as before. The performance is much better.
> Formerly about 12500 ms for all projects, now about
> 4500, where most of the CPU time is consumed by
> StringSearchModelInterpolator.interpolateInternal().
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