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Bug 234635

Summary:	org.netbeans.modules.parsing.impl.RunWhenScanFinishedSupport.runWhenScanFinished: LowPerformance took 29708 ms.
Product:	java	Reporter:	maulnick
Component:	Hints	Assignee:	Jan Lahoda <jlahoda>
Status:	RESOLVED FIXED
Severity:	normal	CC:	sdedic
Priority:	P3	Keywords:	PERFORMANCE
Version:	7.3
Hardware:	All
OS:	All
Issue Type:	DEFECT	Exception Reporter:	203182
Attachments:	nps snapshot

Description maulnick 2013-08-20 12:19:40 UTC

This issue was reported manually by sdedic.
It already has 1 duplicates 


Build: NetBeans IDE 7.3 (Build 201302132200)
VM: Java HotSpot(TM) Client VM, 20.45-b01, Java(TM) SE Runtime Environment, 1.6.0_45-b06
OS: Windows 7

User Comments:
maulnick: long response time



Maximum slowness yet reported was 29708 ms, average is 29708

Comment 1 maulnick 2013-08-20 12:19:43 UTC

Created attachment 138905 [details]
nps snapshot

Comment 2 Svata Dedic 2013-08-20 12:30:56 UTC

The DeclarativeHintsRegistry.computeHints() collects hints classes from classpath, blocking other parser-aware tasks for quite a long time on classpath scanning. 


From the UI log it seems that the snapshot comes from the middle of the work, not right after IDE start (although ZIPs are only opened for file objects; maybe FOBs were GCed already).

Comment 3 Jan Lahoda 2013-08-22 07:52:09 UTC

Collecting the files asynchronously and semi-cancelably:
http://hg.netbeans.org/jet-main/rev/84b96bb731e5