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From Mark Thomas <ma...@apache.org>
Subject Re: server status reports long request times
Date Wed, 20 Jul 2011 08:28:28 GMT
On 20/07/2011 09:15, Michael S├╝dkamp wrote:
> Hello,
> 
> From time to time we have customers  experiencing Tomcat going to
> 100% CPU.  One customer sent us the output from the server status
> page from the Tomcat 6.0.32 Manager web-app. This page reports a lot
> of HTTP connector requests belonging to a certain client with stage
> value "S" and "time" values between 1000000 and 3000000 ms, i.e.
> almost one hour. We don't know what causes the requests to never
> finish. Believe me our web-app is not in a loop. Maybe it's a problem
> with the database but we have already often spend a lot of time to
> analyze   but couldn't find a problem on our side.

Thread dumps.

> Anyway,  isn't
> Tomcat somehow capable to detect such hanging requests (say requests
> that take longer than a minute) and kill them?

Detecting them, yes. Killing them, no. This is a Java limitation.

> I studied the HTTP
> connector reference but haven't found a parameter related to this.
> The system runs on a Windows Server 2008 R2 and Java 5 (OK we could
> ask the customer to upgrade Java).

Mark



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