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Bug 179871 - YAGL in storing vs. reading NbPreferences
Summary: YAGL in storing vs. reading NbPreferences
Status: RESOLVED WORKSFORME
Alias: None
Product: platform
Classification: Unclassified
Component: Options&Settings (show other bugs)
Version: 6.x
Hardware: All All
: P2 normal (vote)
Assignee: Theofanis Oikonomou
URL:
Keywords: PERFORMANCE
Depends on:
Blocks:
 
Reported: 2010-01-26 06:31 UTC by Exceptions Reporter
Modified: 2012-12-18 10:22 UTC (History)
15 users (show)

See Also:
Issue Type: DEFECT
Exception Reporter: 157075

Attachments
nps snapshot (256.00 KB, application/nps)
2010-01-26 06:31 UTC, Exceptions Reporter 		Details
nps snapshot (256.00 KB, application/nps)
2010-02-15 08:56 UTC, Vladimir Voskresensky 		Details
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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...