[Zope] ZEO recommended for single-cpu?

Pascal Peregrina Pperegrina at Lastminute.com
Tue Jun 14 06:00:05 EDT 2005


Also, concerning multi-cpu, I think it's the other way around.

Because python processes only use one CPU, it's useless to run one Zope
instance on a multi-cpu system, as only one CPU will be used.  That's why on
multi-cpu system lots of people run at least Zeo + one instance of Zope (and
often one Zope instance per CPU).

But Zeo is really lightweight, so it's worth trying to use Zeo+Zope on a
single cpu system, to take advantage of what Chris describes below.

Pascal

-----Original Message-----
From: zope-bounces at zope.org [mailto:zope-bounces at zope.org]On Behalf Of
Chris McDonough
Sent: 14 June 2005 10:46
To: gabor
Cc: zope at zope.org
Subject: Re: [Zope] ZEO recommended for single-cpu?


Typically it's because:

- Zope starts faster in a ZEO setup.
- You can use "zopectl debug" to get into a debugger session
  without shutting down Zope first if you use ZEO.

- C


On Tue, 2005-06-14 at 11:03 +0200, gabor wrote:
> hi,
> 
> i understand that you need to use ZEO when running ZOPE on a multi-cpu 
> machine (or when you want to cluster ZOPE).
> 
> but from mails on this forum it seems that people are also using ZEO 
> when they're running ZOPE on a single-cpu machine.
> 
> why?
> 
> gabor
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