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@zope.org [mailto:zope-bounces@zope.org]On Behalf Of Chris McDonough Sent: 14 June 2005 10:46 To: gabor Cc: zope@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?

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