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
>
>
