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From Stefano Mazzocchi <stef...@apache.org>
Subject Re: Possible points of scalibility issues
Date Fri, 15 Feb 2002 17:50:33 GMT
Berin Loritsch wrote:

> > Berin, I spent several *months* finetuning the thread-pool code that was
> > used in Apache JServ 1.0 (and is still there, used in both IBM WebSphere
> > and Oracle Application Server). I remember that I got a report from
> > Alcatel that they were using it with loads up to 12000 req/sec.
> 
> :)  And how many *threads* running simultaneously?

If I'm not mistaken, they were more than several hundreds concurrent
requests.
 
> Remember, Requests/Second != cuncurrent threads

Of course.

> Apache HTTPD in it's default configuration will run up to 150 processess,
> and when there are more connections than processess, it will make further
> requests wait.
> 
> 12000 req/sec translates to 12.5 ms/request with 150 processes/threads.
> It also translates to 41.6ms/request with 500 processes/threads.
> 
> (In another mail I will post my formula for scaling requirements)
> 
> > Guess that if you need something clean and scalable, that's the way to
> > go :)
> >
> > [I proposed this a while back but you and Peter tought it was too
> > complex.... but I still like mine more :) but I'm biased]
> 
> ( Aren't we all ;P )
> 
> I think the implementations we have now fit that bill--clean and scalable.

kool.

> The question remains about the ECM itself yet.  I haven't had time X-Mozilla-Status:
0009ing tests yet.

I fully trust your judgement on this.

-- 
Stefano Mazzocchi      One must still have chaos in oneself to be
                          able to give birth to a dancing star.
<stefano@apache.org>                             Friedrich Nietzsche
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