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Bug 243740

Summary:	org.openide.explorer.view.VisualizerNode.getChildren: LowPerformance took 33403 ms.
Product:	projects	Reporter:	Exceptions Reporter <exceptions_reporter>
Component:	Generic Projects UI	Assignee:	Tomas Stupka <tstupka>
Status:	RESOLVED WORKSFORME
Severity:	normal	Keywords:	PERFORMANCE
Priority:	P3
Version:	8.0
Hardware:	All
OS:	All
Issue Type:	DEFECT	Exception Reporter:	209055
Attachments:	nps snapshot

Description Exceptions Reporter 2014-04-10 15:35:11 UTC

This bug was originally marked as duplicate of bug 172715, that is already resolved. This bug is still valid, so this seems to be another bug, but it might be related.

Build: NetBeans IDE 8.0 (Build 201403101706)
VM: Java HotSpot(TM) Client VM, 25.0-b70, Java(TM) SE Runtime Environment, 1.8.0-b132
OS: Windows 8

User Comments:
GUEST: <Please provide a description of the problem or the steps to reproduce>
When i started netbeans, it start quick but responses very slow.



Maximum slowness yet reported was 33403 ms, average is 33403

Comment 1 Exceptions Reporter 2014-04-10 15:35:12 UTC

Created attachment 146677 [details]
nps snapshot

Comment 2 Jan Peska 2014-04-11 09:52:22 UTC

Open project action called during the initial Opening projects process - further evaluation needed

Comment 3 Ondrej Vrabec 2014-07-17 08:10:24 UTC

Projects create their nodes too slow and inside the nodes mutex holding a write lock which effectively locks all access to nodes hierarchy.
Build your nodes (or pre-build everything time-consuming) before setting children.keys:
org.netbeans.modules.project.ui.ProjectsRootNode$ProjectChildren -> 
org.netbeans.modules.project.ui.ProjectsRootNode$ProjectChildren.createNodes()	97.95994	22,954 ms (98%)	2,896 ms

Comment 4 Tomas Stupka 2015-06-11 13:11:29 UTC

only one report and no duplicate in over a year since nb 8.0 2014-04-10. 
Perhaps already gone. Closing