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Bug 228822

Summary:	IDE sometimes freezes for 4 seconds after editor save
Product:	editor	Reporter:	ebakke
Component:	-- Other --	Assignee:	Milutin Kristofic <mkristofic>
Status:	RESOLVED INCOMPLETE
Severity:	normal
Priority:	P3
Version:	7.3
Hardware:	Macintosh
OS:	Mac OS X
Issue Type:	DEFECT	Exception Reporter:
Attachments:	.npss file attached from NetBeans

Description ebakke 2013-04-21 22:46:53 UTC

Every now and then, when I save a modified Java file in the editor (using Command+S), the IDE hangs for about 4 seconds before the file is successfully saved. During this time I get a busy mouse pointer, and nothing else can be clicked in the IDE. Since I save very often while editing code, this is a big annoyance even though it only happens maybe every 10 times.

Unfortunately I haven't found a reliable way to reproduce the bug. I'm opening a bug in case others are experiencing the same problem and want to chime in. I'll comment on this bug with more information if I find out more or find a foolproof way to trigger the bug.

I'm fairly certain this behavior is new in NetBeans 7.3--I didn't experience it before upgrading from 7.2. Note that I'm using MacOS and Java 1.6.0_43--not sure if that matters.

Comment 1 Milutin Kristofic 2013-04-22 12:12:52 UTC

Could you please take a profile snapshot (through Profile Me feature) during
the freeze, attach it here and reopen ? 
Thanks in advance.
http://wiki.netbeans.org/GenerateThreadDump#Profile_Me_Now

Comment 2 ebakke 2013-04-22 16:33:57 UTC

Will do--thanks!

Comment 3 ebakke 2013-04-24 18:55:11 UTC

Created attachment 133772 [details]
.npss file attached from NetBeans

.npss file

Comment 4 ebakke 2013-04-24 18:57:53 UTC

Here's the requested snapshot. The freeze occurs for 6 seconds starting at 2:52:42.7 and can be clearly seen on the "stack depth" plot--it is constant at 136 for the whole duration of the freeze.

Comment 5 ebakke 2013-04-24 18:59:38 UTC

(Or rather, I suppose the stack depth isn't actually constant, but during the freeze, the profiler only managed to get a couple of samples.)

Comment 6 Milutin Kristofic 2013-04-25 12:48:29 UTC

The problem is with apple.awt.CGlobalCursorManager.findHeavyweightUnderCursor[native]()	59.07514	3,812 ms (59.1%)	3,812 ms

What is your jdk version?

Comment 7 ebakke 2013-04-25 15:10:23 UTC

This was under Java 6 on MacOS. I just yesterday upgraded to Java 7 and the latest development version of NetBeans--I can post another comment if I discover the bug there as well.

Comment 8 Milutin Kristofic 2013-05-14 13:20:58 UTC

3 weeks without hearing about your jdk 7 version, seems to me It works well ^^ Reopen if not with snapshot, thanks

Comment 9 ebakke 2013-05-14 14:26:37 UTC

mkristofic@netbeans.org: Yes, in 3 weeks on JDK 7 and the latest development version of NetBeans, I have never encountered the bug. Feel free to close it.