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

[Stan Hoeppner]

On 7/11/2011 1:24 AM, Matthew Macdonald-Wallace wrote:
> 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.

More specific information would be helpful.  Load as shown through top
doesn't really tell anything.  Are you simply seeing memory pressure?
Is all that RAM being used for block device cache or actually eaten by
the pop servers?

-- 
Stan