[imp] Slowness with big mailboxes

[Joseph Brennan]

--On Saturday, September 29, 2001 16:20 +0100 Peter Farrow <PeterF@3d-computers.co.uk> wrote:
 
> I'm noticing that when I use IMP to connect to a mailbox with quite a few 
> messages, performance drops considerably (can take up to a minute to open
> the 
> mailbox each time.  Cleaning out the mail so that there's only a handful
> speeds 
> things right up.  I'm using IMAP, and I experience the same thing when 
> connecting to a local mailserver or a remote mailserver....


Why does this surprise you?  It always takes longer to parse a larger
mailbox.  This is true for any IMAP client and is not special to IMP.

The only thing special to IMP is that it has to open a new IMAP session
every time you click to a new page, so any slowness the IMAP server
may have in opening files is magnified.  Some file servers will 
temporarily cache recently accessed files for some minutes, which is a
blessing with IMP's inefficient IMAP usage.

I wonder if IMP should download the mailbox to local temp space, and
then read from the local copy.  IMP could store changes and connect to 
the IMAP server every configurable N minutes to synch the changes, 
similar to PC clients' offline mode.  IMP would look faster to users.

Joseph Brennan                           postmaster@columbia.edu
Academic Technologies Group, Academic Information Systems (AcIS)





>From chuck@horde.org Date: Mon,  1 Oct 2001 09:48:31 -0400
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Subject: Fwd: If I am using Courier-IMAP

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----- Forwarded message from arifhm <arifhm@i2.co.id> -----
    Date: Mon, 1 Oct 2001 12:31:26 +0700
    From: arifhm <arifhm@i2.co.id>
Reply-To: arifhm <arifhm@i2.co.id>
 Subject: If I am using Courier-IMAP
      To: chuck@horde.org

Dear all,

How to show quota if I am using Courier-IMAP with vchkpw authentication ?
Courier-IMAP does not use IMAPadmin/pass authentication, they are standalone 
IMAP.

I already read at Courier-IMAP Documentations, that I have to read 
file ".current-size" at "./Maildir/" folder to get quota calculation... but I 
am a newbie at Linux environment, so I don't know how to do that wth php :(

Please help me, I'll appreciate you with a great thanks who will help me.

Thanks,


Regards,


Arif Hasan M
http://webmail.i2.co.id



----- End forwarded message -----


-chuck

--
Charles Hagenbuch, <chuck@horde.org>
Some fallen angels have their good reasons.
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>From chuck@horde.org Date: Mon,  1 Oct 2001 09:52:13 -0400
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From: Chuck Hagenbuch <chuck@horde.org>
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References: <C587FF391BCAD411B8120008C7864670013FDD84@mtvxch07.veritas.com> <006801c14a58$78e90880$e902a8c0@chpyr.aquisante.fr>
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Subject: Re: [imp] Demande Renseignements IMP 

Quoting Eric Piollet <eric.piollet@chpyr.aquisante.fr>:

> J'aimerais savoir si l'un d'entre vous à installer le webmail IMP en
> francais (vers>2.2.6)
> ->Sa version
> ->Sa langue

I'm happy to try and help people, but I don't speak French... I apologize, but 
you'll need to post questions in English in this forum. If anyone knows of a 
French-language support forum that would be relevant, feel free to provide the 
link to French speakers on the lists.

-chuck

--
Charles Hagenbuch, <chuck@horde.org>
"What was and what may be lie, like children whose faces we cannot see, in the 
arms of silence. All we ever have is here, now." - Ursula K. Le Guin


>From chuck@horde.org Date: Mon,  1 Oct 2001 09:55:08 -0400
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From: Chuck Hagenbuch <chuck@horde.org>
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Subject: RE: [imp] Slowness with big mailboxes

Quoting Joseph Brennan <brennan@columbia.edu>:

> I wonder if IMP should download the mailbox to local temp space, and
> then read from the local copy.  IMP could store changes and connect to
> the IMAP server every configurable N minutes to synch the changes, 
> similar to PC clients' offline mode.  IMP would look faster to users.

Yar. If you can provide a working demo of that, I'd be interested in what kind 
of load that puts on the server, how well it stays in sync, and how massive the 
changes needed would be.

-chuck

--
Charles Hagenbuch, <chuck@horde.org>
"What was and what may be lie, like children whose faces we cannot see, in the 
arms of silence. All we ever have is here, now." - Ursula K. Le Guin