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From Dean Gaudet <dgau...@arctic.org>
Subject Re: newbie thread/process model question in hybrid server
Date Sun, 04 Jul 1999 16:16:47 GMT
Actually I think I've said the same thing to manoj... I'm planning to use
a fixed number of processes and a varying number of threads in the model
I'm working on.

Dean

On Sat, 3 Jul 1999, Thorsten von Eicken wrote:

> I've been reading 2.0/mpm for a couple of days and am still a bit puzzled 
> by the hybrid server's strategy of using processes and threads. More 
> precisely, I don't understand why the number of threads per process is 
> constant and the number of processes varies with load.
> 
>  From a parallel computing background I would have done the opposite. I 
> would have expected to set the number of processes to approx the number of 
> processors in the system, and then used the threads to basically multiplex 
> one processor. Ideally some affinity between processes and processors could 
> be set-up to improve cache behavior. Thus the threads are used to keep 
> track of the state for the N requests each process has up in the air at a 
> given time and the processes are used to get parallelism across the 
> processors of a multiprocessor machine.
> 
> Can a kind soul explain to me how to think about the approach taken in the 
> hybrid server?
> 
> Thanks,
> 	Thorsten von Eicken
> 
> ~~~~~
> Thorsten von Eicken
> expertcity.com                              Phone: (805) 964-0383 x313
> 5385 Hollister Ave #111                     Fax:   (805) 964-6103
> Santa Barbara, CA 93111                     Cell:  (805) 403-0982
> 
> 


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