Idle connections keep threads on epollWait()

[이희승 (Trustin Lee)]

There is no way to adjust the maximum number of I/O threads in Netty.  I don't think it's a good idea to implement such a feature considering its complexity and no performance gain.

NettyUser5325 <subhirn3 at yahoo.de> wrote:

>
>Hi. Thanks for the quick answer.
>
>I did some testing using the HexDumpProxy, and made the following
>observations.
>
>When limiting the number of threads by passing the proper limit as a
>constructor argument to NioClientSocketChannelFactory and
>NioServerSocketChannelFactory, the program works all fine. It keeps the
>maximum number of threads on epollWait() as long as there are more open
>connections than the thread limit.
>
>However, I would like to dynamically set the thread limit during
>runtime,
>which these classes do not allow me to do. So I tried to use the
>java.util.concurrent.ThreadPoolExecutor class to do the limiting, and
>creating the channel factories with a very high number. But this does
>not
>seem to be feasible because the channel factories do not return the
>threads
>for open connections, and the program does not get a thread to handle
>any
>new connections anymore.
>
>Is there any way to achieve a dynamic thread limiting in Netty?
>
>Is it possible to specify an extra thread pool for threads that just
>manage
>idle connections (and thereby limiting the number of threads on
>epollWait())?
>
>Is there a way to change this behavior that the channel factories
>always use
>the maximum number of threads to do epollWait() on idle connections?
>
>Thanks
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--
Trustin Lee, http://gleamynode.net/
Sent from a mobile device. Please excuse my brevity.