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Bug 179871

Summary:	YAGL in storing vs. reading NbPreferences
Product:	platform	Reporter:	Exceptions Reporter <exceptions_reporter>
Component:	Options&Settings	Assignee:	Theofanis Oikonomou <theofanis>
Status:	RESOLVED WORKSFORME
Severity:	normal	CC:	alexvsimon, azizur, hosiplan, issues, jsedek, kganfield, mjanicek, mmocnak, Montserrat, ravindranathakila, saubrecht, stanny110, szmitek, thurka, vv159170
Priority:	P2	Keywords:	PERFORMANCE
Version:	6.x
Hardware:	All
OS:	All
Issue Type:	DEFECT	Exception Reporter:	157075
Attachments:	nps snapshot nps snapshot

Description Exceptions Reporter 2010-01-26 06:31:46 UTC

Build: NetBeans IDE Dev (Build 201001190201)
VM: Java HotSpot(TM) 64-Bit Server VM, 14.3-b01-101, Java(TM) SE Runtime Environment, 1.6.0_17-b04-248-10M3025
OS: Mac OS X

User Comments:
kganfield: switching between clases in the editor

GUEST: I'm opening a big maven projects with more than 100 modules



Maximum slowness yet reported was 15554 ms, average is 7526

Comment 1 Exceptions Reporter 2010-01-26 06:31:52 UTC

Created attachment 93560 [details]
nps snapshot

Comment 2 Jaroslav Tulach 2010-02-10 07:09:33 UTC

4s in330495 spent in sun.java2d.loops.Blit.Blit[native](): we cannot do much about it, until we learn what the native code is doing in this case

8s in 250611 - broken snapshot (why it is not excluded Jindo?)

14s in 261789 - broken snapshot (why it is not excluded?)

6.7s in 270803 - broken snapshot (why?)

3.2s in 296391 - YAGL between Preferences read and preferences store. Preferably the preferences shall not be blocked for reading when they are flushing their content into disk:
http://statistics.netbeans.org/exceptions/exception.do?id=296391

Let's use this issue for the last issue with preferences. Imho the output stream shall be obtained outside of any lock, maybe also the write shall be done without any lock (we need to exclude two writes, but they will be excluded by filesystems API anyway)

Comment 3 Vladimir Voskresensky 2010-02-15 08:56:58 UTC

Created attachment 94167 [details]
nps snapshot

fix&continue in JDPA

Comment 4 Alexander Simon 2012-12-17 14:15:55 UTC

35 reports => P2

Comment 5 Theofanis Oikonomou 2012-12-17 16:29:41 UTC

The only reports related to NbPreferences are 296391 and 348001 (~three years ago). Most of the other reports are caused by native calls like sun.java2d.loops.MaskBlit.MaskBlit[native](), over which we have no control. NbPreferences synchronization is modified since then, so closing as WFM. Please reopen if it happens again and it relates to NbPreferences.

Comment 6 Alexander Simon 2012-12-17 16:52:34 UTC

(In reply to comment #5)
> The only reports related to NbPreferences are 296391 and 348001 (~three years
> ago). Most of the other reports are caused by native calls like
> sun.java2d.loops.MaskBlit.MaskBlit[native](), over which we have no control.
> NbPreferences synchronization is modified since then, so closing as WFM. Please
> reopen if it happens again and it relates to NbPreferences.
Did you file (know) bag against Java?

Comment 7 Theofanis Oikonomou 2012-12-17 17:32:40 UTC

(In reply to comment #6)
> Did you file (know) bag against Java?

I am not aware/have not filed such bug. Stando, have you seen this? Thank you.

Comment 8 Stanislav Aubrecht 2012-12-18 10:22:40 UTC

(In reply to comment #7)
> (In reply to comment #6)
> > Did you file (know) bag against Java?
> 
> I am not aware/have not filed such bug. Stando, have you seen this? Thank you.

I didn't find any JDK bug that might be related to this issue.
And without steps to reproduce there's no point filing a new one...