This Bugzilla instance is a read-only archive of historic NetBeans bug reports. To report a bug in NetBeans please follow the project's instructions for reporting issues.

Bug 181300 - Sniffing resolver works in AWT thread; this freezes UI in the case file system is slow
Summary: Sniffing resolver works in AWT thread; this freezes UI in the case file syste...
Status: RESOLVED WONTFIX
Alias: None
Product: platform
Classification: Unclassified
Component: Data Systems (show other bugs)
Version: 6.x
Hardware: PC Solaris
: P3 normal (vote)
Assignee: Jaroslav Tulach
URL:
Keywords: PERFORMANCE, THREAD
Depends on:
Blocks: 184196
  Show dependency tree
 
Reported: 2010-02-27 05:09 UTC by Vladimir Kvashin
Modified: 2010-09-17 18:30 UTC (History)
1 user (show)

See Also:
Issue Type: DEFECT
Exception Reporter:

Attachments
AWT thread dump (6.71 KB, text/plain)
2010-02-27 05:10 UTC, Vladimir Kvashin 		Details
Add an attachment (proposed patch, testcase, etc.)

Note You need to log in before you can comment on or make changes to this bug.
Description Vladimir Kvashin 2010-02-27 05:09:38 UTC 
When I browse a slow file system in explorer (say, via adding to favorites), UI freezes for significant time (10-20 seconds and more). This occurs when I try to expand a node.

Thread dump (see attachment) shows that a sniffing resolver works in the AWT thread. I believe this is incorrect.
Comment 1 Vladimir Kvashin 2010-02-27 05:10:32 UTC 
Created attachment 94582 [details]
AWT thread dump
Comment 2 Jaroslav Tulach 2010-04-26 18:36:51 UTC 
This one will be harder to solve. Leaving for later version.
Comment 3 Jaroslav Tulach 2010-09-10 06:06:02 UTC 
My current idea is to display dummy node and later replace it with real one (with icon, properties, actions). I am not sure how reliable that is going to be. I am working on a less-blocking-189979-and-181300 branch at
http://hg.netbeans.org/core-main/shortlog/eb9a806f0c37

There is a builder at
http://deadlock.netbeans.org/hudson/job/prototypes-less-blocking-189979-and-181300/
Comment 4 Jaroslav Tulach 2010-09-10 19:14:35 UTC 
I tried to delay call to Dataobject.find and do it later from non-AWT thread. The code seems to get far more fragile and I am afraid to do that.

So rather then fixing, let's try some defence: How often this happens? How much files your directories contain? What is their mime type? What are their extensions? Can you genereate self-profiling snapshot?


Btw. when you browse the same directory in Files tab, is it as slow as in Favorites one? If not, then I know what to solve...
Comment 5 Jaroslav Tulach 2010-09-15 16:20:26 UTC 
No cooperation, no fix.
Comment 6 Jesse Glick 2010-09-17 18:30:04 UTC 
Correcting resolution.