[Zope3-Users] Infrastructure Requirements?

[Jonathan]

----- Original Message ----- 
From: "Benji York" <benji at zope.com>
To: "Doyon, Jean-Francois" <jdoyon at NRCan.gc.ca>
Cc: <zope3-users at zope.org>; <dbuch at teachsmart.org>
Sent: Friday, February 16, 2007 5:00 PM
Subject: Re: [Zope3-Users] Infrastructure Requirements?


> Doyon, Jean-Francois wrote:
>> - On the web boxes run Apache with mod_rewrite to get you to the Zope
>> instance(s) running on the app layer machines
>
> Some people substitute Squid for Apache, or in certain circumstances, 
> leave that layer out all together.
>
>> I still bother to try and get single CPU machines, because of the whole
>> Python GIL vs. Thread issue, though newer linuxes have CPU affinity.
>
> I don't quite understand that statement.  You can certainly run an 
> instance per CPU and modern OS schedulers are smart enough to make setting 
> CPU affinity overkill.
>
> Four instances on a four core box works quite nicely. :)

Do you mean "four instances on a box with 4 cpus" or "4 instances on a box 
with 2 cpus, where each CPU has a dual core"?
ie. has anyone tried running 2 instances of zope on a dual-core cpu? If so, 
how did it perform?


Jonathan