[Dovecot] POP3 vs. IMAP Load/Memory usage in Dovecot 1.0.15

[Matthew Macdonald-Wallace]

On Fri, 2011-07-08 at 10:48 +0100, lists at truthisfreedom.org.uk wrote:
> We have noticed that the IMAP servers appear to be under much less  
> load and utilising drastically less RAM than the POP3 servers and I'm  
> wondering if there is a reason for this as we have seen some swapping  
> onto disk yet we are only handling 500 concurrent POP3 connections to  
> each server at any given time compared with over 600 IMAP connections.

Am I to take it that this is expected behaviour?

If anyone can shed more light on this I'd be very grateful.

Thanks,

Matt