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From "George Sexton" <geor...@mhsoftware.com>
Subject RE: [OT] Re: jvm exits without trace
Date Mon, 22 Mar 2010 19:48:30 GMT
> -----Original Message-----
> From: Dan Armbrust [mailto:daniel.armbrust.list@gmail.com]
> Sent: Monday, March 22, 2010 12:17 PM
> To: Tomcat Users List
> Subject: Re: [OT] Re: jvm exits without trace
> 
> On Tue, Mar 16, 2010 at 4:46 PM, Carl <carl@etrak-plus.com> wrote:
> > My approach is to get something (a JVM) that works and then gradually
> change
> > until it breaks.  Then, I know what is causing the problem.  To date,
> I
> > haven't been able to get a JVM that works.
> >
> 
> I have had a lot of issues finding stable JVMs since I moved our
> software from 1.5 to 1.6... 1.6 has been a mess for ages under our
> workload on CentOS.  Code that ran fine under 1.5 would segfault in
> all sorts of random places on 1.6.  I even tried the 1.7 openJDK early
> builds... they were even worse.
> 
> I was pleased to see that the most recent release
> http://java.sun.com/javase/6/webnotes/6u18.html contains _tons_ of bug
> fixes, including lots of crash fixes.  Seriously... the last few
> releases have contained only a handful of fixes... this release has
> hundreds.

I'm running 1.6.0_18 under OpenSuSE 11.0-11.2 and I've only had one problem.
It looks like a GLIBC error related to IPV6. I disabled IPV6 on the machine
and it's been rock solid since.

I don't use native connectors, or AJP. I do about 900,000 hits with 4GB/Day
spread across 3 servers and it's just rock steady. I run the tomcat
instances for 2-3 weeks each before re-starting. For each machine, that's
about 6 million hits with about 40 GB of transfer.

George Sexton
MH Software, Inc.
303 438-9585
www.mhsoftware.com


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