[imp] Slowness with big mailboxes

[Rick Romero]

On 2 Oct 2001 at 10:40, Peter Farrow wrote:

> Dear Paul,
> 
> I have set imp up on a Red Hat Linux machine (7.0 and 7.1) and found the
> following information:
> 
> On Red Hat 7.0 running on a single PIII 650 machine with 256 Megs of RAM
> takes a long time (>1 Min)to open a mailbox with 3000 or so messages in it, 

I don't think my earlier post made it (I was playing with email clients 
at the time..), but I've noticed the same thing on my Red Hat 
system.  I think it's 7.0.  IIRC, my Apache was eating like 27MB on 
startup.  

The web server is  a Compaq PIII 800, and it's noticably slower than 
Pegasus Mail and KMail, using IMAP.  

I personally think it's the build of Apache with PHP, but that specific 
install isn't used enough for me to spend the time needed to fix the 
problem..    But it's another place for you to look.

Rick
 
> On Red Hat 7.1 running on a Dual Celeron 366 machine with 512Megs RAM it
> takes around 10 seconds to do the same thing.
> 
> So its either: Red Hat 7.1, RAM or twin CPUs that makes the difference for
> me.
> 
> Notably, when connecting  to a Micro$oft Exchange server it takes about 10x
> as long than connecting to a real mail server running Solaris on an E4000
> machine, even when the Mailboxes are of comparable complexity.
> 
> I know this isn't much help, but it gives you somewhere to start!  An Imap
> proxy moves the delay downstream and may not help as much as you need.
> 
> Regards
> 
> Peter Farrow 
> peterf@3d-computers.co.uk
> Technical Director
> 3D computer Systems
> 
> www.3d-computers.co.uk
> -----Original Message-----
> From: Paul Fielding [mailto:paul@mainland.ca]
> Sent: 01 October 2001 21:07
> To: imp@lists.horde.org
> Subject: Re: [imp] Slowness with big mailboxes
> 
> 
> Quoting Jon Parise <jon@horde.org>:
> 
> > There's really no way around it at the moment.  You might try
> > looking at an IMAP proxy, such as Perdition:
> 
> But I guess my question is, no way around what?
> 
> It seems to me that it isn't just an 'accepted problem'.  I'm experiencing a
> 
> slow down on big mailboxes, other people aren't.  Obviously this means that 
> there should be something I can change in my system that should remedy the 
> situation.  Perhaps an OS issue, perhaps an IMP issue, perhaps my hardware 
> simply isn't beefy enough and I need to upgrade it. (Just how much
> horsepower 
> does IMP need to connect to a mailserver and server out big mailboxes
> quickly? 
> Mine's a Pentium class box).
> 
> <shrug>  I'm just trying to understand what the problem actually is...
> 
> regards,
> 
> Paul
> 
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-- 
Rick Romero
IT Manager	Valeo, Inc.
ph 262.695-4841  fax 262-695-4850
rick@valeoinc.com