Guys, I've now fixed this. There is a bug in the tcnative-1.dll library that ships with Tomcat 5.5.17. I realised that if I connected to my webapp on port 8080 (rather than through IIS) everything was fine so I replaced the tcnative library with version 1.1.8, which you can find here http://tomcat.heanet.ie/native/1.1.8/binaries/win32/
Hope someone finds this useful! Cheers. rcgeorge23 wrote: > > Hi Folks, > > Tomcat 5.5 > Java 1.5 > Hibernate 3.2 (with C3P0 connection pooling) > > I'm currently experiencing a problem in our production environment where > Tomcat very quickly consumes 100% of the CPU and doesn't give it back. The > webapp (an ecommerce system) runs absolutely fine on my laptop (inside > Eclipse), so I'm assuming that this is some kind of environmental issue. > The problem begins as soon as a user tries to do something that is > momentarily processor intensive, like performing a search. I would expect > the CPU to peek for a second or so (which it does on my laptop), but I > would then expect the request to be fulfilled and CPU usage to drop back > to 0%. However, CPU usage remains at ~99% until Tomcat is restarted. > > The machine is a P4 3GHz with 1GB of RAM. I have given Tomcat a heap size > of 384MB, however it only seems to be consuming about 120MB at most. > > I have attached JProfiler to Tomcat in order to try and get an idea of > where the CPU time is being used but sadly I am no wiser. None of my code > appears to be eating CPU time (and neither do any of Tomcat's Java > threads). > > I'd be really grateful if someone could give me some ideas about how to go > about troubleshooting this. > > Cheers, > Richard. > -- View this message in context: http://www.nabble.com/100--CPU-usage-tf4166493.html#a11854393 Sent from the Tomcat - User mailing list archive at Nabble.com. --------------------------------------------------------------------- To start a new topic, e-mail: users@tomcat.apache.org To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
