CLOSE WAITS ON NETTY SERVER

[Willi Schönborn]

See inline comments below.

On 1/26/2011 5:50 PM, 이희승 (Trustin Lee) wrote:
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> Thanks for sharing your story with us.  Very helpful.
>
> "Mark_K"<mark.k at ecobee.com>  wrote:
>
>> We had a similar issue. It was due to two things:
>>
>> 1) We had connection cleanup code in our implementation of the
>> SimpleChannelUpstreamHandler. This code would end up running in the
>> Netty
>> thread and consume it for much too long due to DB updates, etc.  This
>> caused
>> Netty to run our of threads to process incoming requests. Solution was
>> to
>> offload the logic into one of our application threads instead and
>> release
>> the Netty thread ASAP. This goes for all handler methods, in fact.
Just for clarity, is this the use case ExecutionHandler was designed for?
>> 2) Java JDKs have major performance issues with NIO. We upgraded to JDK
>> 1.6.0_20 and the CLOSE_WAITS were gone. Seems that there is some
>> locking or
>> contention for release of resources which gets locked up and the
>> CLOSE_WAITS
>> keep growing.
>>
>> Mark.
>> --
>> View this message in context:
>> http://netty-forums-and-mailing-lists.685743.n2.nabble.com/CLOSE-WAITS-ON-NETTY-SERVER-tp5961429p5963302.html
>> Sent from the Netty User Group mailing list archive at Nabble.com.
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> - --
> Trustin Lee, http://gleamynode.net/
> Sent from a mobile device. Please excuse my brevity.
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