[Opensim-dev] Threading strategy

[Stefan Andersson]

Actually, no; I think the client thread is there to continously serve the out-queue in a heterogenous fashion, but that could be substituted by thread pooling as well.
 
/Stefan


Date: Mon, 24 Sep 2007 15:38:08 +0200From: dalienta at gmail.comTo: tleiades at hotmail.com; opensim-dev at lists.berlios.deSubject: Re: [Opensim-dev] Threading strategyHow would the thread pool help ? IMHO the threads should be per-region, not per-client - then the number of threads would be quite limited.I would think in the http server the thread pool is used because HTTP is inherently a request-response-forget protocol. Whereas the client connections are long-lived, so if we have now one thread per client connection, I do not see how the thread pool would be useful... (indeed these are speculations without much looking at the code, the tide of the last week's burst of RL still there)/d
On 9/23/07, Tleiades <tleiades at hotmail.com> wrote: 


Hi
 
I have created a new page on the wiki, outlining the threading strategy, or lack thereof.
 
http://opensimulator.org/wiki/OpenSim:Threading_strategy  
 
I think we should streamline our use of threads. I am especially concerned about the way threads are used in the ClienView, where a thread is used per client. One thread per connection is the classical way of handling several clients connecting to a single server, unfortuantely this frequently leads to a scenario where hundreds, if not thousands of threads execute in one process. I would suspect that the user, asset and grid servers will have a large number of connections, consequently we need to think ahead, and plan for good scalability in those server modules.
 
I would propose that we generally switch to a strategy similar to the one used in BaseHttpServer, relying on the thread pool. 
 
/tleiades
 
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