Re: mod_jk reply_timeout and error state

2010-04-21 Thread Rainer Jung
Hi Sean, On 20.04.2010 08:04, Sean GAO wrote: According to online documentation (http://tomcat.apache.org/connectors-doc/generic_howto/timeouts.html): Long Garbage Collection pauses on the backend do not make a good fit with some timeouts. Try to optimise your Java memory and GC settings.

Re: mod_jk reply_timeout and error state

2010-04-21 Thread Sean GAO
Hi Rainer, Thanks for your informative and thoughtful reply. Yes, we are definitely going with CMS. It's a product environment so we have to be careful with whatever we plan to do. By tweaking reply_timeout, be it hard or soft, we were actually circumventing the problem rather than facing it.

Re: mod_jk reply_timeout and error state

2010-04-20 Thread Sean GAO
According to online documentation (http://tomcat.apache.org/connectors-doc/generic_howto/timeouts.html): Long Garbage Collection pauses on the backend do not make a good fit with some timeouts. Try to optimise your Java memory and GC settings. So if JVM tuning doesn't help, what else

mod_jk reply_timeout and error state

2010-04-19 Thread Sean GAO
Hi, We are running apache 2.2.4 and tomcat 5.5.28 with mod_jk 1.2.28. 3 tomcat instances. Referring to http://tomcat.apache.org/connectors-doc/reference/workers.html , we came up with a workers.properties file like this: worker.list=balancer worker.maintain=30 #tomcat01