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From Filip Hanik - Dev Lists <devli...@hanik.com>
Subject Re: Threadpool doesn't contain any threads
Date Wed, 26 Nov 2008 16:28:12 GMT
could just be flaky jmx code, meaning we don't publish completely 
accurate numbers

Filip

Kees Jan Koster wrote:
> Dear Praveen,
>
>> Everyday we are noticing the tomcat not responding on a port. On 
>> further inspection we noticed that the thread pool that is serving 
>> this port has no threads. Right around the time tomcat goes into this 
>> state, we noticed that there is a thread death, and get the following 
>> stack trace
>
> Does this happen randomly on the day, or at a specific time of day? Is 
> it reproducible on a test machine?
>
> What other activity is going on around the time that Tomcat dies? Cron 
> jobs? Backups? Network changes?
>
>> Did anyone else notice this issue. Another minor caveat is, we built 
>> Tomcat using JDK 1.5 but are running it on JDK 1.6. Could this be 
>> causing any issue?
>
> Hum. You built your own Tomcat? Is there a test environment that you 
> can test this application with a pre-built one from Apache.org? Just 
> to make sure.
>
>> Also I used Jconsole and noticed that currentThreadBusy and 
>> currentThreadCount are both -1.
>
> I'm not sure that these figures can be trusted once the thread pool 
> has died.
> -- 
> Kees Jan
>
> http://java-monitor.com/forum/
> kjkoster@kjkoster.org
> 06-51838192
>
> Human beings make life so interesting. Do you know that in a universe 
> so full of wonders,
> they have managed to invent boredom. Quite astonishing... -- Terry 
> Partchett
>
>
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