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Bug 186152 - Unusuably slow debugger
Summary: Unusuably slow debugger
Status: VERIFIED DUPLICATE of bug 182064
Alias: None
Product: debugger
Classification: Unclassified
Component: Java (show other bugs)
Version: 6.x
Hardware: Other Linux
: P2 normal (vote)
Assignee: issues@debugger
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2010-05-14 11:12 UTC by Jaroslav Tulach
Modified: 2010-05-17 15:45 UTC (History)
0 users

See Also:
Issue Type: DEFECT
Exception Reporter:

Attachments
Another desparate debugging session video (9.82 MB, video/x-msvideo)
2010-05-14 11:14 UTC, Jaroslav Tulach 		Details
Zipped log file including JDI communication (7.11 MB, application/octet-stream)
2010-05-14 11:15 UTC, Jaroslav Tulach 		Details
Add an attachment (proposed patch, testcase, etc.)

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Description Jaroslav Tulach 2010-05-14 11:12:26 UTC 
I've managed to perform ~10 F8 per minute. That is not unacceptably slow for a 21st century debugger.
Comment 1 Jaroslav Tulach 2010-05-14 11:14:00 UTC 
Created attachment 98996 [details]
Another desparate debugging session video
Comment 2 Jaroslav Tulach 2010-05-14 11:15:51 UTC 
Created attachment 98997 [details]
Zipped log file including JDI communication
Comment 3 Martin Entlicher 2010-05-14 11:17:31 UTC 
Can you please provide the build number?
I've made some improvements recently... see issue #182064.

*** This bug has been marked as a duplicate of bug 182064 ***
Comment 4 Tomas Pavek 2010-05-14 11:30:26 UTC 
Build 100511.

The log contains enormous number of requests like:
[JDI: Sending Command(id=12934) JDWP.VirtualMachine.ClassesBySignature]
[JDI: Sending:                 signature(String): Ljava/util/Map;]

Also the video shows some maps in variables window. I.e. likely the known problem with inefficient formatters.
Comment 5 Martin Entlicher 2010-05-14 11:42:32 UTC 
I see that you have a build from May 11. The problem seems to be variable formatters. I've made some improvements in http://hg.netbeans.org/main/rev/f6f58e8e726f so if you can please check a new build from updated sources...?

The ObjectCollectedException is inside JDI and can not be fixed.
Moreover, an exception from toString() is an example of a really bad design.
Comment 6 Marian Mirilovic 2010-05-17 15:45:56 UTC 
I am not able to reproduce such slowness in NB 6.9 (201005170932)