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From Steve Nelson <>
Subject Clustering Problem
Date Wed, 07 Jan 2004 16:00:43 GMT
I was having random problems with clustering when starting up. Mostly it had
to do with Timing out
when the manager was starting up. I built the CVS version and it solved that
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, Tomcat
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 the
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 millions
of errors or something.
-Steve Nelson

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