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From Steve Nelson <>
Subject RE: tomcat 5.0.16 Replication
Date Wed, 07 Jan 2004 19:47:51 GMT

My CPU Util jumps to 100% on both processes. It functions properly other
maxing the machine. BTW this is with NO load. I am going to try to profile
it but the EJP profile files total over 800 meg for just starting up Tomcat.
And I am off-site so I had to transfer them.

-----Original Message-----
Sent: Wednesday, January 07, 2004 1:43 PM
To: Tomcat Users List
Subject: Re: tomcat 5.0.16 Replication

Currently running tomcat 5.0.16 with the CVS HEAD of the replication module.
This is under redhat 9. So far so good.

What kind of problem did you encounter under rh9?

Jean-Philippe BĂ©langer

Filip Hanik wrote:

>my only experience with Redhat 9 is that it doesn't play well with NIO.
>I have not successfully ran tomcat clustering on RH9, I use RH8.
>I also don't have a RH9 machine at home yet, so I can't develop for it
>-----Original Message-----
>From: Steve Nelson []
>Sent: Wednesday, January 07, 2004 6:51 AM
>To: ''
>Subject: tomcat 5.0.16 Replication
>I was having random problems with clustering when starting up. Mostly it
>to do with Timing out
>when the manager was starting up. I built the CVS version and it solved
>problem. But it has caused
>some serious performance problems.
>First a little background.
>I have 2 servers, dual 300mhz cpq proliants, both running Redhat - 9,
>5.0.16 (with catalina-cluster.jar build from cvs) The multicast packets are
>restricted to a crossover link between the servers. There are 3 hosts in
>server.xml, all with clustering set up. They all function just fine.
>But.....the cpu's spikes up to 100% if I start up both servers. I know this
>didn't happen without the new catalina-cluster.jar. If I shut down 1 server
>(doesn't matter which) everything returns to normal. But when both are
>running both servers are at 100% CPU. I am trying to profile it now, but I
>figured if someone has already experienced this they could save me some
>Oh, and there isn't anything relevant in my logs. It's not throwing
>of errors or something.
>-Steve Nelson
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