[imp] Re: IMP Slow?

[Mike DiChiappari]

I am using the IMAP that comes with RedHat 9 (imap-20001a-18).  It seems to
work very well from various email clients.

Mike

"Alain Fauconnet" <alain at ait.ac.th> wrote in message
news:20040923023946.GD20453 at ait.ac.th...
> On Wed, Sep 22, 2004 at 10:18:03PM -0400, Mike DiChiappari wrote:
> > Our IMP/Horde seems to be very slow.  I've looked through some of the
> > posting here regarding performance and have tried a few things, but no
> > success yet.
> >
> > The problem is that accessing email via IMP is slow.  Access to IMAP
> > mailboxes is fast through other email clients (Eudora, Outlook Express).
It
> > is worse for accounts with large mailboxes (~100MB).  Login is slow and
each
> > page (inbox, message) is slow (5-10 seconds).
> >
> > The machine is configured like this: RedHat9 with typical stuff, php
> > 4.2.2-17, imap-2001a-18, horde 2.2.3, imp 3.2.1, and apache 2.0.40-21.
Oh,
> > this is a relatively slow server (500MHz) and servers only about a dozen
> > email accounts.
>
> What IMAP server are you using? IMP, like almost  any  IMAP-based  web
> mail, opens and closes IMAP sessions quite often. With  UW-IMAP,  this
> means  *a  lot* of disk I/O if you have large mailboxes. That might be
> your bottleneck.
>
> In  my  past  experience  with  very  busy  mail  servers (e.g. 80,000
> mailboxes  on  a  single  Sun  E420 server), switching from UW-IMAP to
> Courier  or  another  Maildir  format  IMAP  server  made   a   *huge*
> difference.
>
> Some  people  have  had  luck  with  IMAP  proxies that cache sessions
> (http://www.horde.org/imapproxy/).  I don't like this kind of approach
> much.
>
> Greets,
> _Alain_
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