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https://issues.apache.org/jira/browse/NETBEANS-2507?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Anthony Vanelverdinghe updated NETBEANS-2507:
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Component/s: ide - Performance
> Slow Java code completion
> -------------------------
>
> Key: NETBEANS-2507
> URL: https://issues.apache.org/jira/browse/NETBEANS-2507
> Project: NetBeans
> Issue Type: Bug
> Components: ide - Performance
> Reporter: Anthony Vanelverdinghe
> Priority: Major
> Attachments: selfsampler.npss
>
>
> There are serious issues with code completion in recent NetBeans versions.
> Attached is a profiling snapshot: all I did was triggering autocompletion at
> "java.nio.file.Files.<cursor>"
> Of the 2 "Code Completion" threads with the most CPU time:
> * one spends over 9 seconds in
> [FastJar::list|https://github.com/apache/netbeans/blob/master/java/java.source.base/src/org/netbeans/modules/java/source/parsing/FastJar.java#L154]
> * the other involves a call to
> org.netbeans.modules.j2ee.persistence.editor.completion.JPACodeCompletionProvider$JPACodeCompletionQuery.query
> () even though the code completion had nothing to do with JPA and neither
> the project nor the class use JPA
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