Re: Tomcat Hogging CPU

2007-06-04 Thread Omar Eljumaily
John, I'm using 5.5.17. I'm actually not using it right now for the 15,000 visits per day site, though. I just develop these things and usually kick my clients off my server when their bandwidth gets too high. I remember lots of problems with 5.0 including race conditions like you've

Re: Tomcat Hogging CPU

2007-06-01 Thread john . calderbank
Omar: What version of Tomcat do you use? -- Original message -- From: Omar Eljumaily <[EMAIL PROTECTED]> > What's your definition of a "connection?" Is it a session? I've had an > average of about 300 active sessions which amounted to about 15,000 > unique visits per

Re: Tomcat Hogging CPU

2007-06-01 Thread Leon Rosenberg
which tomcat version exactly? tomcat 5.0.19 - 5.0.30 had a weird bug with session synchronization, if you have one of those versions try kill -QUIT tomcat (not sure how to perform the same under windows, maybe with jmap). and check the threaddump. One of your thread is consuming CPU, maybe in an i

Re: Tomcat Hogging CPU

2007-06-01 Thread john . calderbank
Tomcat 5.0 Java 1.5 Thank you. -- Original message -- From: "Leon Rosenberg" <[EMAIL PROTECTED]> > tomcat and java versions would help a lot :-) > Leon > > On 5/31/07, [EMAIL PROTECTED] wrote: > > We have been experiencing a problem where Tomcat causes CPU usage to g

Re: Tomcat Hogging CPU

2007-05-31 Thread Leon Rosenberg
tomcat and java versions would help a lot :-) Leon On 5/31/07, [EMAIL PROTECTED] <[EMAIL PROTECTED]> wrote: We have been experiencing a problem where Tomcat causes CPU usage to go to 100%. This slows down our web servers. Has anyone else ever experienced such a problem? We average 150 acti

Re: Tomcat Hogging CPU

2007-05-31 Thread Omar Eljumaily
What's your definition of a "connection?" Is it a session? I've had an average of about 300 active sessions which amounted to about 15,000 unique visits per day. This was on a machine with substantially less power than yours. We average 150 active connections per web server. What do other

RE: Tomcat Hogging CPU

2007-05-31 Thread Caldarale, Charles R
> From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] > Subject: Tomcat Hogging CPU > > We have been experiencing a problem where Tomcat causes CPU > usage to go to 100%. Odds are it's one of your webapps, not Tomcat. Try running a CPU profiler to see where time is

Tomcat Hogging CPU

2007-05-31 Thread john . calderbank
We have been experiencing a problem where Tomcat causes CPU usage to go to 100%. This slows down our web servers. Has anyone else ever experienced such a problem? We average 150 active connections per web server. What do others average? How do others configure initial memory pool, maximum