Re: When running under high load (via load generating tools), Tomcat 6.0.20 stops expiring sessions until the load subsides; causing thrashing on Garbage Collection

2010-01-09 Thread Mark Thomas
On 08/01/2010 23:07, Robin Wilson wrote: OK, I made the following changes (1 at a time) to 'server.xml', and retested: Manager className=org.apache.catalina.ha.session.DeltaManager expireSessionsOnShutdown=false processExpiresFrequency=1

Re: When running under high load (via load generating tools), Tomcat 6.0.20 stops expiring sessions until the load subsides; causing thrashing on Garbage Collection

2010-01-09 Thread Rainer Jung
On 09.01.2010 12:13, Mark Thomas wrote: On 08/01/2010 23:07, Robin Wilson wrote: OK, I made the following changes (1 at a time) to 'server.xml', and retested: Manager className=org.apache.catalina.ha.session.DeltaManager expireSessionsOnShutdown=false

RE: When running under high load (via load generating tools), Tomcat 6.0.20 stops expiring sessions until the load subsides; causing thrashing on Garbage Collection

2010-01-09 Thread Robin Wilson
running under high load (via load generating tools), Tomcat 6.0.20 stops expiring sessions until the load subsides; causing thrashing on Garbage Collection On 08/01/2010 23:07, Robin Wilson wrote: OK, I made the following changes (1 at a time) to 'server.xml', and retested: Manager

RE: When running under high load (via load generating tools), Tomcat 6.0.20 stops expiring sessions until the load subsides; causing thrashing on Garbage Collection

2010-01-09 Thread Robin Wilson
DESK: 512-623-5913 www.KingsIsle.com -Original Message- From: Rainer Jung [mailto:rainer.j...@kippdata.de] Sent: Saturday, January 09, 2010 6:11 AM To: Tomcat Users List Subject: Re: When running under high load (via load generating tools), Tomcat 6.0.20 stops expiring sessions until

Re: When running under high load (via load generating tools), Tomcat 6.0.20 stops expiring sessions until the load subsides; causing thrashing on Garbage Collection

2010-01-09 Thread Mark Thomas
On 09/01/2010 15:50, Robin Wilson wrote: Well, we encounter this problem in our production environment every so often. If we run at sustained load for 2 hours we hit the wall in production. Keep in mind, our production environment has 4 clustered servers, so it takes about 1/4 the amount of

When running under high load (via load generating tools), Tomcat 6.0.20 stops expiring sessions until the load subsides; causing thrashing on Garbage Collection

2010-01-08 Thread Robin Wilson
I am trying to get a clustered Tomcat 6.0.20 environment to operate in a high load environment. As part of the testing regime, we want to be able to run continuous high load against a QA setup - and validate that Tomcat operates continuously without a hiccup. The SETUP: 1) Apache front-end

RE: When running under high load (via load generating tools), Tomcat 6.0.20 stops expiring sessions until the load subsides; causing thrashing on Garbage Collection

2010-01-08 Thread Robin Wilson
[mailto:ma...@apache.org] Sent: Friday, January 08, 2010 4:07 PM To: Tomcat Users List Subject: Re: When running under high load (via load generating tools), Tomcat 6.0.20 stops expiring sessions until the load subsides; causing thrashing on Garbage Collection On 08/01/2010 21:53, Robin Wilson

RE: When running under high load (via load generating tools), Tomcat 6.0.20 stops expiring sessions until the load subsides; causing thrashing on Garbage Collection

2010-01-08 Thread Robin Wilson
load generating tools), Tomcat 6.0.20 stops expiring sessions until the load subsides; causing thrashing on Garbage Collection Thanks, I'll give that a try. Just out of curiosity, what is the downside of doing this? (Performance hit, ???) -- Robin D. Wilson Director of Web Development KingsIsle