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Bug 183609

Summary:	21s - in both FileUtil.refreshAll
Product:	platform	Reporter:	misterm <misterm>
Component:	Filesystems	Assignee:	Jaroslav Tulach <jtulach>
Status:	RESOLVED FIXED
Severity:	normal	CC:	joao_candido, jpavao, maghiel, mvfranz, pluszak, ppis, stefan79, szmitek, tnleeuw, wobster
Priority:	P3	Keywords:	PERFORMANCE
Version:	6.x
Hardware:	All
OS:	All
Issue Type:	DEFECT	Exception Reporter:	167658
Attachments:	nps snapshot nps snapshot

Description misterm 2010-04-06 22:48:58 UTC

Build: NetBeans IDE Dev (Build 100403-97deba2209a4)
VM: Java HotSpot(TM) Client VM, 10.0-b19, Java(TM) SE Runtime Environment, 1.6.0_04-b12
OS: Windows XP
Maximum slowness yet reported was 21859 ms, average is 10703

Comment 1 misterm 2010-04-06 22:49:04 UTC

Created attachment 96821 [details]
nps snapshot

Comment 2 Exceptions Reporter 2010-04-07 05:13:33 UTC

Created attachment 96833 [details]
nps snapshot

Comment 3 Jaroslav Tulach 2010-04-11 08:07:57 UTC

Both attached snapshots contain FileUtil-Refresh-All thread which may block the underlaying operating system (apple painting in one case, reading of preferences in the other).

Comment 4 Jaroslav Tulach 2010-04-12 16:06:16 UTC

*** Bug 183412 has been marked as a duplicate of this bug. ***

Comment 5 Jaroslav Tulach 2010-04-20 08:02:47 UTC

I have a reason to believe that after fixes made (bug 184344, bug 184219), the I/O load of the background thread shall be made much less intrusive. Only time can tell whether it will be enough to prevent this kind of slowness, however.