Thanks for the reply Peter.

I am caching these pages after they are processed, but because of the nature
of the application, they are many different kinds of these pages.

Tomcat does not even throw an exception, I have allocated 128-356 mb memory.
It just dies and does not response to requests.

I am looking for a solution that for a certain url pattern only allows a
certain number of requests to be serviced at the same time. This would
solve my problem, while not affecting servicing lighter pages.

Cheers,
Adam.



Peter Crowther wrote:
>
>> From: adamle [mailto:adam@(protected)]
>> While testing the site with JMeter if I put 25 users in a
>> thread group and
>> hit the above url concurrently I kill my tomcat instance.
>
> What's the error? Do you run out of memory, for example? How much
> memory have you allocated to the JVM?
>
>> I'm looking for some way to stop this happening.
>
> Cut down the number of worker threads in Tomcat to limit the number of
> requests that are processed concurrently? Note that this has the
> unpleasant side-effect of throttling Tomcat's request processing even
> for the lighter pages that don't cause problems.
>
>> Could be caused by ajp13 connector?
>
> Much more likely to be an application issue - there are plenty of other
> people on this list who run Tomcat with significantly higher loads than
> that with no issues.
>
>> I'm not looking for a solution to cut down the time it takes
>> to service each request, with caching for instance.
>
> Then you are probably excluding your actual problem from consideration,
> and you will be applying sticking plaster to a broken leg because you're
> not willing to consider the real problem.
>
>    - Peter
>
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