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From Yonatan Goraly <ygor...@sbcglobal.net>
Subject Re: Allocated instances
Date Wed, 05 Nov 2003 07:04:35 GMT
I was at that customer today, and disabled the CPU hyper threading 
feature. Tomcat and the application seems to work normally now.
I sent the thread dumps to myself, but unfortunately they didn't arrive. 
Not sure it is still relevant.



Shapira, Yoav wrote:

>Howdy,
>
>  
>
>>At this particular installation, each time I shut down Tomcat, I get a
>>message that is waiting for x instance(s) to be deallocated - can get
>>    
>>
>to
>
>It'd be useful to know instances of what class ;)  Can the customer, or
>you, reproduce this problem easily?  If so, you can run the app inside a
>profiler or another tool that will give you a heap snapshot showing what
>those instances are.
>
>  
>
>>Since it is a standard configuration that didn't cause any problems so
>>far, I don't think it has anything to do with the application code.
>>    
>>
>
>Maybe, maybe not.  It's impossible to rule out the application code
>without further information.
>
>  
>
>>legacy HTTP1.1 connector - same behavior.  A thread dump shows various
>>threads as locked (don't have it with me now) - but I understood that
>>    
>>
>it
>  
>
>>doesn't necessarily implies a deadlock.
>>    
>>
>
>It doesn't necessarily mean a deadlock, you're right.  But it could mean
>a deadlock, and it could be very helpful in determining what's causing
>problems.  If you post the thread dump we'll help analyze it... ;)
>
>Yoav Shapira
>
>
>
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