[Zope] [Urgent] Zope good for multiprocessor hardware

[Chalu Kim]

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Shane Hathaway wrote:

> > On Thu, 16 Nov 2000 Andreas Tille wrote:
> >
> > > we intent to buy new web server hardware.  We want to run Debian GNU/Linux
> > > on a Sun system.  I wonder if zope could profit from a multi-processor
> > > architecture on such a system.
>
> If you mix in ZEO (now open source), yes it can.  With ZEO you can run
> independent Zope processes that all refer to the same site.  The global
> interpreter lock becomes irrelevant.
>
> > > Zope server starts several threads.  So could they be split over the
> > > different processors automatically, can I enforce it or is it not
> > > possible.
> > Sorry for quoting myself but I need this information today because we
> > have a meeting with some salesman.  If I can not clearly answer this
> > question it might be bad for implementing zope in our institute because
> > a wrong designed hardware could lead to another software than zope and
> > this would be a shame.
>
> Then ZEO is exactly what you're looking for.
>

You are assuming one uses some sort of load balancing. A good question is how you
can control certain processes running on which processor?

Our experiences of ZEO have been a Zope Server and bunch of Zope clients serving
requests. We still contend that you get more out of single CPU and lots of memory
and no balancer.  Also, it depends on processor scheduling and thread modules of a
given OS. With single server, it is easier on administering your site. Well, that
is given..

KISS, Keep It Stupid Simple is what I come back to after having used all kinds of
stuff; balancer, SAN, etc.

>
> Shane
>
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