Re: tomcat crash puzzle

2003-02-14 Thread Dan McGowan
Justin, Yoav, Peter, Thanks for the suggestions...I will put them to work and report my findings! Dan Dan -- As Peter Lin said, it does look like you've got a slow leak (which you'll want to look at eventually), but it doesn't look like it's affecting yo

Re: tomcat crash puzzle

2003-02-13 Thread Justin Ruthenbeck
Dan -- As Peter Lin said, it does look like you've got a slow leak (which you'll want to look at eventually), but it doesn't look like it's affecting your crashes. If it was, you'd see something much more dramatic and much more obvious -- yours looks pretty normal. As Yoav mentioned in her r

Re: tomcat crash puzzle

2003-02-13 Thread Peter Lin
Have you tried using the monitor in conjunction with Jmeter to send 20 concurrent requests for say 5K iterations? from your description, it sounds like a slow leak some place. I had a similar problem in a past project where a thread was lying around several minutes after the request was ser

Re: tomcat crash puzzle

2003-02-13 Thread Dan McGowan
Justin, Thanks for the lightweight memory monitoring suggestion. I implemented it on a jsp that just displays the values and writes a line to a file. Every minute I reload the page using a meta "refresh" command. The excerpts below start at 10 am and go to after 4 pm. The server did crash w

RE: tomcat crash puzzle

2003-02-13 Thread Shapira, Yoav
Howdy, The KERN_EXCEPTION excerpt suggests an internal VM crash. I'm not family with Mac OS, but could it maybe need some patches (from Sun) to run the JDK? Have you tried JDK 1.4.1? Yoav Shapira Millennium ChemInformatics >-Original Message- >From: Dan McGowan [mailto:[EMAIL PROTECTE

Re: tomcat crash puzzle

2003-02-12 Thread Justin Ruthenbeck
Hi Dan -- If you're seeing intermittent crashes and there isn't an obvious machine or OS level problem, I'd suspect it has something to do with available memory. I'm doubly suspicious because you're allocating max 256M, which wouldn't take a long time to get eaten up, depending on your app.