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Bug 230545

Summary:	ProjectManager.findProject: LowPerformance took 20204 ms. readmutex in awt waits on long writemutex off-awt
Product:	projects	Reporter:	Exceptions Reporter <exceptions_reporter>
Component:	Generic Infrastructure	Assignee:	Milos Kleint <mkleint>
Status:	RESOLVED FIXED
Severity:	normal	CC:	racasagrande
Priority:	P3	Keywords:	PERFORMANCE
Version:	7.1
Hardware:	All
OS:	All
Issue Type:	DEFECT	Exception Reporter:	199482
Attachments:	nps snapshot

Description Exceptions Reporter 2013-05-30 18:19:37 UTC

Build: NetBeans IDE 7.1.2 (Build 201204101705)
VM: Java HotSpot(TM) Client VM, 20.2-b06, Java(TM) SE Runtime Environment, 1.6.0_27-b07
OS: Windows 7

User Comments:
racasagrande: Cleaning and Building a project.



Maximum slowness yet reported was 28412 ms, average is 17880

Comment 1 Exceptions Reporter 2013-05-30 18:19:39 UTC

Created attachment 135157 [details]
nps snapshot

Comment 2 Milos Kleint 2013-06-05 06:23:10 UTC

AWT waits on project read mutex, while other thread is loading a project with write mutex on, within the write block time is spent on  native filesystem IO. related in problem cause to issue 192206

Comment 3 Milos Kleint 2013-06-12 11:17:56 UTC

http://hg.netbeans.org/core-main/rev/3157687f21a4

Comment 4 Quality Engineering 2013-06-13 01:18:56 UTC

Integrated into 'main-golden', will be available in build *201306122301* on http://bits.netbeans.org/dev/nightly/ (upload may still be in progress)
Changeset: http://hg.netbeans.org/main-golden/rev/3157687f21a4
User: Milos Kleint <mkleint@netbeans.org>
Log: #230545 avoid loadProject(), can take significant amount of time, the file delete events can keep coming repeatedly, no need to load the recent projects here anyway..