Re: high CPU usage on tomcat 7

2012-10-06 Thread Jeff MAURY
Aren't you're clients polling the server, this may cause the session not to expire even if the user is not using the UI ? Jeff On Sat, Oct 6, 2012 at 9:42 PM, Mark Thomas wrote: > > > Kirill Kireyev wrote: > > >Thanks for all your thorough advice Shanti! (and everyone else) > > > >Here are my

Re: high CPU usage on tomcat 7

2012-10-06 Thread Mark Thomas
Kirill Kireyev wrote: >Thanks for all your thorough advice Shanti! (and everyone else) > >Here are my findings so far: >0) My servlet sessions store a large number (~10s of M) or data in RAM. > >This is by design, to optimize performance. I can also have ~3K active >sessions at any one time. H