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Bug 346395

Summary: eclipse.exe consumes ALOT of RAM and processing power when editing TTCN code
Product: [Eclipse Project] Platform Reporter: andreas.eclipse
Component: IDEAssignee: Platform-UI-Inbox <Platform-UI-Inbox>
Status: RESOLVED NOT_ECLIPSE QA Contact:
Severity: critical    
Priority: P3 CC: daniel_megert, remy.suen
Version: 4.1   
Target Milestone: ---   
Hardware: PC   
OS: Windows Vista   
Whiteboard:
Attachments:
Description Flags
Configuration from Eclipse
none
Error report from Eclipse
none
Screen shot of task mgr during editing none

Description andreas.eclipse CLA 2011-05-19 04:45:55 EDT 
Build Identifier: M20110210-1200

First of all, just let me say that I am not sure that Eclipse is the guilty one, it could be Clearcase or the TITAN plugin, but I need help locating the source to this problem.

Eclipse used to work acceptably fast, but recently things has been going very slow. Every character I type in triggers the eclipse.exe to jump up to 50% CPU usage (on a dual core, so I guess it occupies a single core to 100%) and this last for at least 10 sec. Which means that simply coding in the editor keeps my CPU fan running on high pitch while writing. Also, the memory monitor in the lower right corner jumps like crazy between 700-1200 MB while typing. 

The most annoying thing are the intermittent lock-ups where Eclipse simply stops responding. Eclipse were more or less useless until I got support with increasing the heap size to 1200 MB (I cannot increase it more, Vista 32 and 4 GB), now it is just _very annoying. 

Things get better if I turn of the on-the-fly-checker in TITAN preferences, but then I lose functionality I need, such as F3, outline and code completion.

Pls see attached documents for a list of plugins and error reports.



Reproducible: Always
Comment 1 andreas.eclipse CLA 2011-05-19 04:48:35 EDT 
Created attachment 196084 [details]
Configuration from Eclipse
Comment 2 andreas.eclipse CLA 2011-05-19 04:49:00 EDT 
Created attachment 196085 [details]
Error report from Eclipse
Comment 3 andreas.eclipse CLA 2011-05-19 04:51:35 EDT 
Created attachment 196086 [details]
Screen shot of task mgr during editing
Comment 4 Krzysztof Daniel CLA 2011-05-19 04:51:56 EDT 
The issues that you have described indicate that the TITAN plugin is guilty. I do not know what it does, but could you uninstall it and check if things got better?

Also, you could gather javacores, so we could check exactly what are the CPU cycles wasted for.

Anyway, I expect this issue is not related to Eclipse at all.
Comment 5 andreas.eclipse CLA 2011-05-19 07:13:39 EDT 
Hi,
I did a complete re-install a few weeks ago, upgraded to current Eclipse version and re-installed the plugins, but with no difference in performance.

How do I gather javacores?

BR,
Andreas


(In reply to comment #4)
> The issues that you have described indicate that the TITAN plugin is guilty. I
> do not know what it does, but could you uninstall it and check if things got
> better?
> Also, you could gather javacores, so we could check exactly what are the CPU
> cycles wasted for.
> Anyway, I expect this issue is not related to Eclipse at all.
Comment 6 Dani Megert CLA 2011-05-19 07:20:02 EDT 
In which editor do you edit? If it is an editor from Eclipse SDK, do you also see the problem with plain Eclipse SDK (no Clearcase and no TITAN installed)?
Comment 7 andreas.eclipse CLA 2011-05-19 07:32:03 EDT 
Now you're asking difficult questions :) I use the standard setup at Ericsson, an editor within Eclipse, its preferences are under Preferences/Java/Editor, so somehow it is related to Java. I am sorry, I am just a user of Eclipse.
Comment 8 Remy Suen CLA 2011-05-19 07:37:02 EDT 
(In reply to comment #7)
> I use the standard setup at Ericsson

So do your other Ericsson colleagues face the same problem?
Comment 9 Dani Megert CLA 2011-05-19 07:39:48 EDT 
(In reply to comment #7)
> Now you're asking difficult questions :) I use the standard setup at Ericsson,
> an editor within Eclipse, its preferences are under Preferences/Java/Editor, so
> somehow it is related to Java. I am sorry, I am just a user of Eclipse.
In the Package Explorer select the file that causes problems when opened in the editor. Then open the context menu and select 'Open With'. Which editor has the black bullet?
Comment 10 andreas.eclipse CLA 2011-05-19 07:45:03 EDT 
Yes, they do, to various extents. It seems to be related to the project size they are working in, and people also use different eclipse.ini, with different settings of the RAM limits. I encountered the problem a month ago, other colleagues was affected earlier and some are not. But yes, there are alot of us facing this problem.
Comment 11 andreas.eclipse CLA 2011-05-19 07:48:21 EDT 
(In reply to comment #9)
> editor. Then open the context menu and select 'Open With'. Which editor has the black bullet?

It is called TTCN-3 Editor.
Comment 12 Dani Megert CLA 2011-05-19 07:50:20 EDT 
>How do I gather javacores?
http://wiki.eclipse.org/index.php/How_to_report_a_deadlock
Comment 13 andreas.eclipse CLA 2011-05-19 08:18:19 EDT 
(In reply to comment #12)
> >How do I gather javacores?
> http://wiki.eclipse.org/index.php/How_to_report_a_deadlock

Ok, I've tried to follow the wiki, with some modifications to suit my setup. I started Eclipse with the following line

C:\Ericsson\E4E\eclipse.exe -vm /Java/JRE/bin -vmargs -XX:+HeapDumpOnOutOfMemoryError

It locked up quite badly, and I got a file java_pid11804 in the Eclipse install lib:

C:\Ericsson\E4E

which I have attached.
Comment 14 andreas.eclipse CLA 2011-05-19 09:06:11 EDT 
Memory dump here:

http://www.logicapplied.se/Eclipse/java_pid11804.zip
Comment 15 Dani Megert CLA 2011-05-19 09:32:39 EDT 
The report shows:

One instance of "com.ericsson.titan.designer.parsers.ProjectSourceSyntacticAnalyzer$TemporalParseData[]" loaded by "com.ericsson.titan.designer" occupies 217'508'088 (83.79%) bytes. The memory is accumulated in one instance of "com.ericsson.titan.designer.parsers.ProjectSourceSyntacticAnalyzer$TemporalParseData[]" loaded by "com.ericsson.titan.designer".

==> you need to report the bug against Titan.
Comment 16 andreas.eclipse CLA 2011-05-19 09:48:07 EDT 
(In reply to comment #15)
> The report shows:
> One instance of
> "com.ericsson.titan.designer.parsers.ProjectSourceSyntacticAnalyzer$TemporalParseData[]"
> loaded by "com.ericsson.titan.designer" occupies 217'508'088 (83.79%) bytes.
> The memory is accumulated in one instance of
> "com.ericsson.titan.designer.parsers.ProjectSourceSyntacticAnalyzer$TemporalParseData[]"
> loaded by "com.ericsson.titan.designer".
> ==> you need to report the bug against Titan.

Yes, I will contact them about this. Thanks alot guys!!