Memory use

[[iso-8859-1] José Angel Blanco González]

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I detect slow performance when sometimes the machine stops responding imap 
and pop connections. I think the preoblem is slow disk read/write 
operations.
Some user have shared accounts and maintain a server copy, but they download 
the mayl by pop, I think they must use imap

Jose
----- Original Message ----- 
From: "Glenn Steen" <glenn.steen at GMAIL.COM>
To: <MAILSCANNER at JISCMAIL.AC.UK>
Sent: Thursday, November 17, 2005 1:16 PM
Subject: Re: Memory use


> On 17/11/05, Matt Hampton <matt at coders.co.uk> wrote:
>> José Angel Blanco González wrote:
>>
>> > I think maybe pop problem, but pop is necessary. Yes, we have some
>> > huge mailboxes. I thought that the problem was with MAilScanner
>> > because of swapping. Is there any solution for huge mailboxes??
>>
>> In our experience IMAP has been better at handling large mailboxes.
>>
>> matt
>>
> Of course it is.... It's designed for that:-).
>
> POP spewing the entire mailbox to the client simply isn't very
> efficient... IMAP has some big improvements on that situation.
>
> But lets go back to my initial question:
> What are the exact "performance deficiencies" that you are seeing? Are
> the users complaining over something specific?
>
> Reason I ask is because the figures _do not (yet:-)_ support any
> theory that your box is resource-deprived.
>
> We haven't really seen any iostats, have we? Nor any longer-period sar
> snapshots, so it might still be such a situation... (And us just
> looking at snapshots from when the system is relatively OK:-)...
> But if you can describe, as exactly as possible, what prompted you to
> start looking... Then we might have "better precision" in our
> theories;).
>
> If you "benchmark" the time it takes a message to go through from the
> outside to a mailbox (wall-clock-time is good enough), is it
> unreasonably slooow? Or do you just have ... jumpy... users?
>
> --
> -- Glenn
> email: glenn < dot > steen < at > gmail < dot > com
> work: glenn < dot > steen < at > ap1 < dot > se
>
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