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question asked: Apr 18 '12, 12:10 p.m.
question was seen: 4,902 times
last updated: Apr 18 '12, 12:10 p.m.

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Jazz Team Server : Multiple Crashes each day

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Andreas Bettenbrecht (26●1●1) | asked Apr 18 '12, 12:10 p.m.
Hello,

we are running JTS Version 3.0.1.2 (RJF-I20111207-1350), free version for up to 10 developers.
I limited the Java Heap Size to 2 GB because 4 GB exclusive are not available. Additional RAM is already ordered and hopefully improves the situation. Back to the problem:
Tomcat crashes several times each day and writes core-, javacore- and snap files to the server directory. Unfortunately nobody in our team has experience in analyzing these files.

I added the last two javacore and snap files, and hope somebody can help us analyze the problem as it's impossible to work smoothly at the moment :-(

Here they are: http://dl.dropbox.com/u/4685125/dumpfiles.zip
And a status screenshot (sorry, partly german): http://dl.dropbox.com/u/4685125/Statuszusammenfassung%20-%20Serveradministration%20-%20Rational%20Jazz%20Team%20Server%20-%20Mozil_2012-04-18_18-24-19.png

Regards,
Andreas

7 answers

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Andreas Bettenbrecht (26●1●1) | answered Apr 20 '12, 2:57 a.m.
Hello,

does nobody have a clue? Or is this the wrong subforum?

Is it possible to get official support? We have access to IBM Intranet, as some of us are students working for IBM.

Regards,
Andreas
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Geoffrey Clemm (30.1k●3●30●35) | answered Apr 21 '12, 8:49 p.m.
FORUM ADMINISTRATOR / FORUM MODERATOR / JAZZ DEVELOPER
The first thing you need to do is to get 4 gigabytes on your server ... 2 gigabytes just isn't sufficient.

Cheers,
Geoff

Hello,

does nobody have a clue? Or is this the wrong subforum?

Is it possible to get official support? We have access to IBM Intranet, as some of us are students working for IBM.

Regards,
Andreas
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Andreas Bettenbrecht (26●1●1) | answered Apr 23 '12, 4:17 a.m.
Thanks for the reply.

Now running with 6 GB physical / 4 GB Java Heap.
Hope that helps!
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Scott Rich (571●3●6) | answered Apr 24 '12, 4:30 a.m.
JAZZ DEVELOPER
Andreas, I took a look at your javacore, and it doesn't look like you were crashign due to out of memory. For some reason, you're hitting a crash in the JVM's JIT compiler. You can recognize this by the "GPF" event and the j9jit23.dll in the header info: 
1TISIGINFO     Dump Event "gpf" (00002000) received 

1TIDATETIME    Date:                 2012/04/18 at 14:04:10

1TIFILENAME    Javacore filename:    C:\Program Files (x86)\IBM\JazzTeamServer\server\javacore.20120418.140244.2320.0003.txt

NULL           ------------------------------------------------------------------------

0SECTION       GPINFO subcomponent dump routine

NULL           ================================

2XHOSLEVEL     OS Level         : Windows Server 2008 6.0 build 6002 Service Pack 2

2XHCPUS        Processors -

3XHCPUARCH       Architecture   : amd64

3XHNUMCPUS       How Many       : 2

NULL           

1XHEXCPCODE    Windows_ExceptionCode: C0000005

1XHEXCPCODE    J9Generic_Signal: 00000004

1XHEXCPCODE    ExceptionAddress: 000000000155D259

1XHEXCPCODE    ContextFlags: 0010001F

1XHEXCPCODE    Handler1: 0000000010030800

1XHEXCPCODE    Handler2: 000000001110CA10

NULL           

1XHEXCPMODULE  Module: C:\Program Files (x86)\IBM\JazzTeamServer\server\jre\bin\j9jit23.dll


If this recurs, we'll need to look at whether there is a JVM fix available.

Thanks,
Scott
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Andreas Bettenbrecht (26●1●1) | answered Apr 24 '12, 3:18 p.m.
Hi Scott!

Thank you!

Unfortunately it's happening again

http://dl.dropbox.com/u/4685125/javacore.20120424.180042.2348.0003.zip

We helped ourselves by using a batch file which scans the tasklist for java.exe and in case of a crash (no process java.exe) it calls the server.startup.bat from the jazz installation. But this only considered as a workaround!

We'd really appreciate your help!

Regards
Andreas
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Andreas Bettenbrecht (26●1●1) | answered Apr 25 '12, 6:54 a.m.
Once again:
http://dl.dropbox.com/u/4685125/javacore.20120425.122111.1544.0003.zip

This time, clearly the JIT component again.
Can this be turned off without tremendous performance loss?
Shall we try another VM?
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Andreas Bettenbrecht (26●1●1) | answered Apr 28 '12, 3:37 p.m.
*Push*

Is it possible to get any help on this topic? Or at least some advice, what we could try?

Regards

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