Very old version of jvm crashes after 20k classes are loaded.
-----Original Message-----
From: Roman Fail [mailto:[EMAIL PROTECTED]
Sent: June 11, 2003 5:10 PM
To: Eric J. Pinnell; Tomcat Users List
Subject: RE: JVM Profilers
We are trying to debug a production system. The JVM crashes occur every 1-3
days, so our temporary workaround has been to restart Tomcat every night.
I will look into RootCause and see if there are others I can come up with.
Does anyone else know of other profilers designed for production
environment?
Regards,
Roman
-----Original Message-----
From: Eric J. Pinnell [mailto:[EMAIL PROTECTED]
Sent: Wed 6/11/2003 1:22 PM
To: Tomcat Users List
Cc: Roman Fail
Subject: Re: JVM Profilers
Something to think about is whether or not you are trying to debug a
production system or a dev system. Does it crash in dev or do you
only
see if after a few days being up in prod?
If you only see it in prod, you might want to think about something
a
little more lightwieght than the profilers you mention. Those are
mainly
for developers. And as far as the ones you name off it's really
personal
preference.
There is a flavor of profilers that are made for more production
envs.
An example is RootCause. But there are several of those types of
profilers out there.
-e
On Wed, 11 Jun 2003, Roman Fail wrote:
> I am considering purchase of JProfiler, OptimizeIt 5.5, or JProbe.
Does anyone have wisdom to share on the features of each? Are there other
good profilers I should consider?
>
> We have been experiencing regular JVM crashes on our production
Tomcat 4.1.24 installation. Originally we were running the Sun HotSpot
1.4.1_02 client, then server (on RH Linux 8.0). Now we've switched to BEA
JRockit 8.1 and are still having crashes, clearly something is bad in our
code - or perhaps we need to start load-balancing. We have tuned obvious
kernel parameters like file-max, and have 2GB physical memory (1GB is given
to tomcat's heap), dual Intel processors. Besides a few small Java-based
daemons on the server, it is dedicated to tomcat.
>
> We recently migrated from a Windows 2000/ServletExec 3.1/Sun
HotSpot client 1.3.1 environment which didn't have these problems - I'm not
sure what to think at this point.
>
> Please reply directly to me (and cc the list) as I receive only
the digest version.
>
> Thanks!
>
> Roman Fail
> POS Portal, Inc.
> Sacramento, CA USA
>
>
