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https://issues.apache.org/jira/browse/NETBEANS-4037?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17087053#comment-17087053
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matteodg commented on NETBEANS-4037:
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Hey I'm working with patched 11.3 and it really improved the performance when
debugging!
One thing though I took a snapshot when using 11.3 patched with only [~jtulach]
code because it seems not improving at full speed. See here
[^4037-only-jtulach-patch.npss]
Thus I think [~jlahoda] patch is needed as well.
> Debugger slow - taken profiler snapshots
> ----------------------------------------
>
> Key: NETBEANS-4037
> URL: https://issues.apache.org/jira/browse/NETBEANS-4037
> Project: NetBeans
> Issue Type: Bug
> Components: debugger - Java
> Affects Versions: 8.2, 11.1, 11.2, 11.3
> Reporter: matteodg
> Assignee: Jan Lahoda
> Priority: Major
> Labels: performance, pull-request-available
> Fix For: 12.0
>
> Attachments: 4037-only-jtulach-patch.npss,
> org.netbeans.modules.debugger.jpda.ui.SourcePath.annotate.npss,
> org.netbeans.modules.debugger.jpda.ui.SourcePath.getURL.npss
>
> Time Spent: 10m
> Remaining Estimate: 0h
>
> We have a pretty big NetBeans Platform Application (~180 modules and 5
> suites) and when the debugger reaches the first breakpoint it got stuck: the
> tabs Debugging, Variables, Breakpoints, etc. are all with a "Please wait..."
> node and with the NetBeans sampler I took a few snapshots highlighting it is
> spending a lot of time on calls like:
> * {{org.netbeans.modules.debugger.jpda.ui.SourcePath.getURL()}}
> * {{org.netbeans.modules.debugger.jpda.ui.SourcePath.annotate()}}
> which at the end boil down to a lot of calls like:
> * java.util.concurrent.CopyOnWriteArrayList.remove()
> * java.io.File.isFile()
> Attached the snapshots.
> Then if I press Continue the debugger remain stuck: now Pause and Continue
> buttons in the toolbar are disabled...
> I kept close and restarting NetBeans but no luck... I remember got this
> behavior even with NB 8.2, sometimes though it goes through and I'm able to
> debug, but very rarely!
>
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