Re: Tomcat having strange 'hickups'

2004-05-13 Thread Michiel Toneman
Are you sure this isn't related to heavy garbage collection in the JVM? jvmstat has some good tools to monitor memory usage an garbage collection in your app. Michiel Wojciech Sobczuk wrote: Hello, I'm running Tomcat 5.0.18 on RedHat 9, started with the following commandline:

Re: Tomcat having strange 'hickups'

2004-05-13 Thread Wojciech Sobczuk
It is possible. Any nice website about tuning the garbage collector? How to make it so it seamlessly works in the background and does not halt the whole server? Best reagards, Wojtek Michiel Toneman wrote: Are you sure this isn't related to heavy garbage collection in the JVM? jvmstat has

Re: Tomcat having strange 'hickups'

2004-05-13 Thread QM
On Thu, May 13, 2004 at 06:51:15PM +0200, Wojciech Sobczuk wrote: : Any nice website about tuning the garbage collector? Um, Google? Sun's website should have, in the very least, docs on the types of GC algorithms available and how to invoke them. : How to make it so it seamlessly works in

RE: Tomcat having strange 'hickups'

2004-05-13 Thread Ryan Lissack
. -Original Message- From: Wojciech Sobczuk [mailto:[EMAIL PROTECTED] Sent: 13 May 2004 17:51 To: Tomcat Users List Subject: Re: Tomcat having strange 'hickups' It is possible. Any nice website about tuning the garbage collector? How to make it so it seamlessly works in the background

RE: Tomcat having strange 'hickups'

2004-05-13 Thread Shapira, Yoav
Hi, It might be a big full garbage collection. Add -verbose:gc to your startup JVM options. Use the system normally, and check the console log as soon as you have one of those 20-second pauses. If it says something like [Full GC: XXX - YYY (20 sec)] then that's the culprit. You will