[26694] in Athena Bugs
Re: linux 9.4.18: java
daemon@ATHENA.MIT.EDU (Alex T Prengel)
Tue Nov 29 11:43:09 2005
Message-Id: <200511291642.jATGgIMd018910@dit.mit.edu>
To: bugs@mit.edu
In-Reply-To: [26663] in Athena Bugs
Date: Tue, 29 Nov 2005 11:42:18 -0500
From: Alex T Prengel <alexp@mit.edu>
X-Spam-Score: 1.217
X-Spam-Level: * (1.217)
X-Spam-Flag: NO
cc: alexp@mit.edu
Errors-To: bugs-bounces@mit.edu
------- Forwarded Message
To: Mitchell E Berger <mitchb@MIT.EDU>
cc: alexp@MIT.EDU, kchen@MIT.EDU
Subject: Re: linux 9.4.18: java
In-Reply-To: Your message of "Mon, 28 Nov 2005 16:35:47 EST."
<200511282135.jASLZlFo025186@zamboni.csail.mit.edu>
Date: Mon, 28 Nov 2005 19:12:03 -0500
From: Alex T Prengel <alexp@MIT.EDU>
X-Spam-Score: -3.783
X-Spam-Flag: NO
X-Scanned-By: MIMEDefang 2.42
Hi Mitch,
>Earlier today, SIPB received e-mail from a student who experienced the
>same problem Kevin described where running a java app causes an Athena
>machine to log you out. In this case, the program was 6.004's bsim,
>which contains much shared code with tmsim, one of the programs Kevin
>experienced the behavior with. The script students use to run bsim
>specifically uses java version 1.4.2_05, which is in the 1.4 series
>you recommended below.
Unfortunately I don't think I'll be able to help a whole lot- I'm
neither a programmer nor a Java expert and although I've seem many
java crash dumps in my day it's only very rarely that I've been able to
figure out anything useful from them.
The only reason I mentioned the 1.4 Java series for Kevin's problem is
that I empirically observed that these tended to work while others
usually crashed the application (for sapgui- not necessarily other
things). I'd be interested to hear from Kevin if the hook I added to
let him pick other Java versions in sapgui helped any- that might be
relevant to the other problem too.
My best suggestion (other than adjusting the heap size as asked for by
the student) is to try different Java versions, particularly newer
ones, if possible, like 1.5.x; it may be necessary to edit the script
to do this; it's even possible that an older version might work
better too. I've installed just about every Java version ever released
on Athena and they're all still around in various version lockers.
If it's a Java bug it's pretty likely to have been fixed in a later release.
Sun has logs of these online but they're hard to track because there are so
many, and so many Java releases... does this happen on Sun too, by the way,
or just Linux?
I hope this helps some- sorry I can't be more useful. If the problem persists
and happens in multiple Java versions, it might help to find a local Java
expert- but I don't know any offhand...
Alex
------- End of Forwarded Message
