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PONonblocking Tcp server
 

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    <p>It's not a question really, i'm just looking for some guidelines :) I'm currently writing some abstract tcp server which should use as low number of threads as it can. </p> <p>Currently it works this way. I have a thread doing listening and some worker threads. Listener thread is just sits and wait for clients to connect I expect to have a single listener thread per server instance. Worker threads are doing all read/write/processing job on clients socket.</p> <p>So my problem is in building efficient worker process. And I came to some problem I can't really solve yet. Worker code is something like that(code is really simple just to show a place where i have my problem):</p> <pre><code>List&lt;Socket&gt; readSockets = new List&lt;Socket&gt;(); List&lt;Socket&gt; writeSockets = new List&lt;Socket&gt;(); List&lt;Socket&gt; errorSockets = new List&lt;Socket&gt;(); while( true ){ Socket.Select( readSockets, writeSockets, errorSockets, 10 ); foreach( readSocket in readSockets ){ // do reading here } foreach( writeSocket in writeSockets ){ // do writing here } // POINT2 and here's the problem i will describe below } </code></pre> <p>it works all smothly accept for 100% CPU utilization because of while loop being cycling all over again, if I have my clients doing send->receive->disconnect routine it's not that painful, but if I try to keep alive doing send->receive->send->receive all over again it really eats up all CPU. So my first idea was to put a sleep there, I check if all sockets have their data send and then putting Thread.Sleep in POINT2 just for 10ms, but this 10ms later on produces a huge delay of that 10ms when I want to receive next command from client socket.. For example if I don't try to "keep alive" commands are being executed within 10-15ms and with keep alive it becomes worse by atleast 10ms :(</p> <p>Maybe it's just a poor architecture? What can be done so my processor won't get 100% utilization and my server to react on something appear in client socket as soon as possible? Maybe somebody can point a good example of nonblocking server and architecture it should maintain?</p>
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