Any load balancer should be able to do this, google for your OS there.  The
load balancer I use LVS.  See http://www.linuxvirtualserver.org/ for more
details.

Andrew Sawyers
--
Zope Managed Hosting
Software Engineer
Zope Corporation
(540) 361-1700 

> -----Original Message-----
> From: Fernando Lujan [mailto:[EMAIL PROTECTED]
> Sent: Wednesday, September 21, 2005 5:35 PM
> To: Andrew Sawyers; zope@zope.org
> Subject: Re: [Zope] Zope scalability / efficiency question
> 
> On 9/20/05, Andrew Sawyers <[EMAIL PROTECTED]> wrote:
> > I did some tests a few years back, basically that came out such that you
> run
> > the number of zope instances as you have CPUs.  I was able to get double
> the
> > performance of a single instance on a dual cpu server when adding a
> second
> > instance.  On a single CPU server, I found that the number of requests
> the
> > server was able to render was cut by nearly 50% +/- when adding a second
> > instance.
> >
> > My rule for building out ZEO Client servers is:
> > Single CPU - Single Zope instance
> > Multiple Processors - # CPUs == # of Zope instances
> 
> Hi Andrew,
> 
> And how can I distribute the load over these Instances, running on the
> same machine?
> 
> Thanks in advance.
> 
> Fernando Lujan

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