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From: Timo Sirainen on 15 Feb 2010 09:56
On 13.2.2010, at 0.41, Victor Duchovni wrote:

> No, this is largely irrelevant. What matters is the IMAP performance
> they expect, that IMAP servers are reasonably CPU and memory intensive.

From what I've seen is that IMAP servers normally take less than 1% CPU load (mainly Dovecot, but I'd think others too). Memory is more important, currently maybe 0.5 MB/connection or so for Dovecot. Usually anyway disk IO is the bottleneck.

From: Victor Duchovni on 16 Feb 2010 13:48
On Mon, Feb 15, 2010 at 04:56:44PM +0200, Timo Sirainen wrote:

> On 13.2.2010, at 0.41, Victor Duchovni wrote:
>
> > No, this is largely irrelevant. What matters is the IMAP performance
> > they expect, that IMAP servers are reasonably CPU and memory intensive.
>
> From what I've seen is that IMAP servers normally take less than 1% CPU load (mainly Dovecot, but I'd think others too). Memory is more important, currently maybe 0.5 MB/connection or so for Dovecot. Usually anyway disk IO is the bottleneck.

Thanks, for the correction, this makes sense. Yes the IMAP server
performance will be disk (and to some extent memory) not CPU
constrained. Still Postfix will not be the bottleneck.

--
Viktor.

P.S. Morgan Stanley is looking for a New York City based, Senior Unix
system/email administrator to architect and sustain our perimeter email
environment. If you are interested, please drop me a note.

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