Thanks. Will ask the host provider to try that (difficult to be on shared hosting :)
--- Per Johnsson <[EMAIL PROTECTED]> wrote: > > Ok, turn on the -verbose:gc and -XX:+PrintGCDetails > and see if you could > find any strange things in the logs. > > I have seen that when the jvm is making big full > garbage collection the > jvm practicaly halts for several seconds which could > cause some strange > behaviors. We had for example a xsl-stylesheet which > used the mozilla > javascript functions and that singe stylesheet > generated very big full > gc's. > > Check this page for which options you can run on > your version of java > 1.5 they are different depending on the versions. > > http://java.sun.com/javase/technologies/hotspot/vmoptions.jsp > > /Regards Per Jonsson > > -----Original Message----- > From: Jerome Benezech [mailto:[EMAIL PROTECTED] > Sent: den 14 maj 2007 12:33 > To: Tomcat Users List > Subject: RE: Tomcat Memory Usage > > Hi, > We're on Java 1.5 and do not get any OutOfMemory but > after some point, > Tomcat uses 50% of the server memory and stops > serving requests. > > > --- Per Johnsson <[EMAIL PROTECTED]> wrote: > > > Hi! > > > > If you get OutOfMemory Errors and running java 1.6 > (maybe later > > versions of java 1.5) you can make the vm to save > a memory dump which > > you could load in ie. YourKit java profiler. And > After a crach you > > could analyse the memroy in your applications. > > > > I did that resently and it works like a charm. > > > > This is the parameters I used: > > -verbose:gc > > -XX:HeapDumpPath=C:\Java\heapdump > > -XX:+HeapDumpOnOutOfMemoryError > > -XX:+PrintGCDetails > > > > You could also look in the gc_log, sometimes you > could see what's > > released and what needs correcting when jvm is > doing a full gc. > > > > Hope it helps. > > > > (If you don't run java6 I can recommend it, faster > and better :-) > > > > /Regards Per Jonsson > > > > -----Original Message----- > > From: Jerome Benezech [mailto:[EMAIL PROTECTED] > > Sent: den 14 maj 2007 11:21 > > To: users@tomcat.apache.org > > Subject: Tomcat Memory Usage > > > > Hi all, > > > > I run a cocoon webapp which is hosted on a shared > Linux environnement > > and runs under tomcat 5.5.9. > > There are about 7 applications running under that > tomcat instance (2 > > cocoon, at least 1 jsp, don't know for the > others). > > My host provider complains that he tomcat uses a > lot of memory and > > that he needs to restart it every 4 hours to > release the memory. > > Tomcat runs as a daemon (started using jsvc) and > with the following > > parameters: > > > > jsvc.exec -user tomcat -cp ./bootstrap.jar > > -Djava.endorsed.dirs=../common/endorsed > > -java.awt.headless=true -Xmx500000000 > > -XX:MaxPermSize=300m -debug -outfile > > ../logs/catalina.out -errfile ../logs/catalina.err > -verbose > > org.apache.catalina.startup.Bootstrap > > -security > > > > I'm really not sure where to start looking: memory > leak due to bad > > programming in the webapp or bad tomcat > configuration leading to > > memory leaks. > > I also noticed there are quiet a few links in > google pointing to > > problems with Tomcat not releasing memory (objets > not getting > > garbage-collected), although they are mostly > related to Tomcat 4.x. > > What is the situation on with Tomcat 5.5.9 ? > > > > I'm looking for help on what to look for, what > configuration > > parameters should be used in production > environnement, how can I > > pinpoint this memory problem ? > > > > Cheers, > > Jerome > > > > > > > > > > Jerome Benezech > > [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] > > > > > > > ************************************************************************ > ******** > > This e-mail and the information it contains may be > privileged and/or > > confidential. It is for the intended addressee(s) > only. > > The unauthorised use, disclosure or copying of > this e-mail, or any > > information it contains, is prohibited. > > If you are not an intended recipient, please > contact the sender and > > delete the material from your computer. > > > ************************************************************************ > ******** > > > > > > > > > --------------------------------------------------------------------- > > To start a new topic, e-mail: > > users@tomcat.apache.org > > To unsubscribe, e-mail: > > [EMAIL PROTECTED] > > For additional commands, e-mail: > > [EMAIL PROTECTED] > > > > > > > Jerome Benezech > [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] > > > ******************************************************************************** > This e-mail and the information it contains may be > privileged and/or > confidential. It is for the intended addressee(s) > only. > The unauthorised use, disclosure or copying of this > e-mail, or any information it contains, is > prohibited. > If you are not an intended recipient, please contact > the sender and delete the material from your > computer. > ******************************************************************************** > > > > --------------------------------------------------------------------- > To start a new topic, e-mail: > users@tomcat.apache.org > To unsubscribe, e-mail: > [EMAIL PROTECTED] > For additional commands, e-mail: > [EMAIL PROTECTED] > === message truncated === Jerome Benezech [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]
