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From Tobias Bieniek <Tobias.Bien...@gmx.de>
Subject Re: High server load due to SessionOutputBufferImpl.flush()
Date Mon, 15 Sep 2014 09:03:47 GMT
>> 2014-09-14 19:40:17,630 DEBUG [I/O dispatcher 31]
>> NHttpServerConnection:144 - produceOutput : http-incoming-22190:
>> Produce output
>> 2014-09-14 19:40:17,630 DEBUG [I/O dispatcher 183]
>> NHttpServerConnection:144 - produceOutput : http-incoming-13597:
>> Produce output
>> 2014-09-14 19:40:17,630 DEBUG [I/O dispatcher 31]
>> NHttpServerConnection:112 - close : http-incoming-22190: Close
>> connection
>> 2014-09-14 19:40:17,630 DEBUG [I/O dispatcher 183]
>> NHttpServerConnection:112 - close : http-incoming-13597: Close
>> connection
>> 2014-09-14 19:40:17,630 DEBUG [I/O dispatcher 31]
>> NHttpServerConnection:144 - produceOutput : http-incoming-22190:
>> Produce output
>> 2014-09-14 19:40:17,630 DEBUG [I/O dispatcher 183]
>> NHttpServerConnection:144 - produceOutput : http-incoming-13597:
>> Produce output
>> 2014-09-14 19:40:17,630 DEBUG [I/O dispatcher 31]
>> NHttpServerConnection:112 - close : http-incoming-22190: Close
>> connection
>> 2014-09-14 19:40:17,630 DEBUG [I/O dispatcher 183]
>> NHttpServerConnection:112 - close : http-incoming-13597: Close
>> connection
>> 2014-09-14 19:40:17,630 DEBUG [I/O dispatcher 31]
>> NHttpServerConnection:144 - produceOutput : http-incoming-22190:
>> Produce output
>> 2014-09-14 19:40:17,630 DEBUG [I/O dispatcher 183]
>> NHttpServerConnection:144 - produceOutput : http-incoming-13597:
>> Produce output
>> 2014-09-14 19:40:17,631 DEBUG [I/O dispatcher 31]
>> NHttpServerConnection:112 - close : http-incoming-22190: Close
>> connection
>> 2014-09-14 19:40:17,631 DEBUG [I/O dispatcher 183]
>> NHttpServerConnection:112 - close : http-incoming-13597: Close
>> connection
>>
>> I'm not exactly sure what the problem is here, but it looks wrong to
>> me. I hope someone here is able to explain what might be happening
>> there.
>>
>
> I am seeing anything abnormal here, just some connections not being kept
> alive, which may be perfectly normal depending on the client request
> composition.

Have a look at the request IDs. If it was just the connections being
closed properly then the request IDs should be increasing, but instead
it seems as if it tries to close the same connections over and over
again.

In case I haven't mentioned it yet, we are using default and SSL
connection factories and most of our traffic is directed to the SSL
endpoints.

Tobias

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