Server Fault is a question and answer site for system and network administrators. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

There is a thread here

added 1 virtual user per 10 secs.
Only 30 virtual users, OutOfMemory was occured at Tomcat6.0.16,
but Tomcat 5.5.26 was 270 virtual users! 

So is it risky to upgrade from Tomcat 5 to Tomcat 6 as It doesn't seem obvious to configure Tomcat 6 to get the same performance as Tomcat 5 ?

In fact in the thread above nobody was capable of knowing the solution.

share|improve this question

We haven't seen this in our Tomcat 6 setup. That sounds pretty dramatic -- I suspect you have something else going on.

As of Tomcat 6.0.25, there's actually some quite nice capabilities for detecting memory leaks (particularly useful for OOME in regards to the PermGen memory).

share|improve this answer

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.