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From Alessandro Torrisi <alessandro.torr...@eurone.it>
Subject Re: [mina] Thread Pools, Concurrent connections and Performance
Date Tue, 27 Dec 2005 11:19:24 GMT
But in this way I will limit users max number in the hub server I think...
Is there any way to have a significant increase of performance ?

Regards,
Alex.


Niklas Therning wrote:

> Alessandro Torrisi wrote:
>
>> Hi ! I'm developing a free and opensource Direct Connect software 
>> (P2P server). Now that protocol implementation is quite complete I'm 
>> testing with lot of connections.
>> When connections are made in a concurrent way (50-100 a time), the 
>> server seems to be blocked...
>> Can I do something to improve performance, adjusting some parameter 
>> or applying some programming pattern directly on Mina ? I've listened 
>> about Thread Pools on SocketAcceptor and IoThreadPool but I didn't 
>> find any tutorial or documentation, is it possible to directly 
>> configure these ones ?
>
>
> Yes. By default the maximum thread pool size equals Integer.MAX_VALUE. 
> It can be changed but this has changed bewteen MINA 0.8 and 0.9.
>
> In 0.8, when using SimpleServiceRegistry, you can configure the 
> maximum pool size like this:
>
> IoThreadPoolFilter f = (IoThreadPoolFilter)
> reg.getIoAcceptor(TransportType.SOCKET).getFilterChain().get("threadPool"); 
>
> f.setMaximumPoolSize(10);
>
> In 0.9 its not that easy since the ThreadPoolFilter used by 
> SimpleServiceRegistry isn't accessible until a session has been 
> created. You could try to extend SimpleServiceRegistry and configure 
> the protected threadPoolFilter yourself:
>
> public class MyServiceRegistry extends SimpleServiceRegistry {
>     public MyServiceRegistry() {
>         super();
>         threadPoolFilter.setMaximumPoolSize(10);
>     }
> }
>
> And then instead of using SimpleServiceRegistry you use 
> MyServiceRegistry.
>
> Both of these approaches will use a thread pool of at most 10 threads.
>
> HTH
> /Niklas



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