Tomcat 5 and the latest JVM would be great; however, I can only make the case for further upgrades when I've exhausted all the possibilities with the versions we're on.
Thanks Ken -----Original Message----- From: Mark Hagger [mailto:[EMAIL PROTECTED] Sent: Wednesday, July 05, 2006 8:05 AM To: Tomcat Users List Subject: Re: tuning garbage collection Frankly I'd suggest moving to the latest JDK 5.0 release, 1.4.0 is a pretty old and creaking version of the JVM really. GC has undergone huge changes in Sun's JVM from 1.4.0 to their current 1.5.0_06 release. I also do wonder why you upgraded from tomcat 3 to tomcat 4. Whats wrong with tomcat 5? Mark On Wed, 2006-07-05 at 07:58 -0500, Ken Gibson wrote: > Good morning. > > I'm hoping someone has experience configuring Tomcat 4 and GC. We > recently upgraded our version of Tomcat from 3 to 4, and are now > experiencing periodic outages. Our problem comes when a Full GC runs. > What we've seen that a Full GC is run more and more frequently to the > point of running every few seconds. > > My site serves ~3000 JSPs per minute during peak on Solaris 8 using Java > 1.4.0_04-b04 and Tomcat 4.1.31. The server.xml startup commands are > > "-server -verbose:gc -XX:+PrintGCTimeStamps -XX:+PrintGCDetails -Xms200m > -Xmx400m" > > We tried "-Xincgc" which worked fine for awhile yesterday until all of a > sudden all free memory on the box was used up presumably while GC ran. > Research indicates that using -XX:+UseParallelGC might be an option > except that it isn't supported in 1.4.0. Is upgrading Java to 1.4.2 our > best solution? > > Any suggestions would be greatly appreciated. > > Thanks > > > Ken > > --------------------------------------------------------------------- > To start a new topic, e-mail: users@tomcat.apache.org > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > > > ________________________________________________________________________ > This email has been scanned for all known viruses by the MessageLabs SkyScan service. ________________________________________________________________________ This email has been scanned for all known viruses by the MessageLabs SkyScan service. --------------------------------------------------------------------- To start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] --------------------------------------------------------------------- To start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
