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https://issues.apache.org/jira/browse/NETBEANS-168?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16673888#comment-16673888
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Laszlo Kishalmi commented on NETBEANS-168:
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I fear we are talking about different issues. Today finally I got something out
of profiler.
A File deleted event hit the fan, Which took 100% CPU on otherwise idle IDE.
As I'm developing NetBeans in NetBeans it seems the NetBeans Project UI Support
gone wild, got responsible for 60% of CPU on:
org.netbeans.modules.apisupport.project.ui.ImportantFilesNodeFactory$ImportantFilesChildren.refreshKeys
Even if none of the important files node were open in the IDE (though I opened
a few in my session). I guess we have listener leak here.
There is another candidate with 23% CPU time:
org.netbeans.modules.parsing.ui.indexing.errors.ErrorAnnotator$RootAddedDeletedListener.fileDeleted
> Background scanning process needs a rethink
> -------------------------------------------
>
> Key: NETBEANS-168
> URL: https://issues.apache.org/jira/browse/NETBEANS-168
> Project: NetBeans
> Issue Type: Bug
> Components: ide - Performance, java - Platform, platform - Execution
> Affects Versions: 8.2, Next
> Environment: NetBeans 8.2, Windows 10 x64
> Reporter: Christian Lenz
> Priority: Critical
> Attachments: messages 10.0 vc2.log, messages.log, ui.log, uigestures
> 10.0 vc
>
>
> Often, while cloning, switching branch, merging, opening etc. etc. NetBeans
> starts Background scanning for changes, but it is not real background,
> because everything what you want to do then, like changing the branch,
> commit, push, pull, open project, delete or whatever, is blocking by this
> task and you can't cancel it, because it is essential.
> Either we need to rethink about this process like to make everything or most
> of the stuff doing things in parallel or the task should really be
> cancelable. It is a pain in the ass for big projects when they start to scan
> for changes.
> It is a real world case because you acan see it when you work on NetBeans
> modules.
> Cheers
> Chris
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