[horde] Horde problem with large mailboxes

Fri May 29 20:16:11 UTC 2009

Thank you very much for your reply 

 From the Outlook Express via IMAP downloading and displaying the email is fast. 

 The account with which I have tested about 2000 mails and most of the post 4500 have that amount. 

Using 3 webmails that point to the same IMAP server (Courier-Imap) through a network whose characteristics are the following: 

 ML370 G4 
 Xeon CPU 3.60 Ghz 
 Mem 1 GB 

Something extra to make is that when you delete the contents of the
table horde_prefs without making any changes to the webmail (Without
hiding eliminated, without a sort mails, etc) shows me the 2000 emails
quickly, in contrast to when I change the order by date is when it
takes over 2 minutes. 

 If you use the ImapProxy can I help you? 

 What could be happening.?

Thanks

Jolumape

> From: webadmin at ualberta.ca
> To: sd at msu.edu
> Date: Fri, 29 May 2009 12:50:58 -0600
> CC: horde at lists.horde.org
> Subject: Re: [horde] Horde problem with large mailboxes
> 
> You know the little icons in the inbox that indicate whether or not a  
> message has an attachment?  Well in order to do that, as I understand  
> it, each message has to be opened and examined to determine whether or  
> not it has an attachment.  We found that it was a SEVERE performance  
> hit to have that turned on.
> 
> K
> 
> 
> 
> On May 29, 2009, at 12:48 PM, Steve Devine wrote:
> 
> > Quoting "Kevin Konowalec" <webadmin at ualberta.ca>:
> >
> >> We have IMAP inboxes with over 10000+ messages in them that load in  
> >> 20 or 30 seconds.  We use Cyrus on the maildrop end but we also use  
> >> an IMAP proxy to speed things up.  Also be sure you turn off the  
> >> attachment checking
> >
> > I'm curious what you are referring to here.
> > /sd
> >
> > and whatnot as it has to crack open the envelope
> >> of each message to check for that information which adds enormous  
> >> overhead.  Also we found that our performance went through the roof  
> >> when eaccelerator was installed properly.  I'm sure you've done  
> >> that but those are the few things we noticed.
> >>
> >> K
> >>
> >>
> >> On May 29, 2009, at 11:51 AM, Vilius Šumskas wrote:
> >>
> >>> Sveiki,
> >>>
> >>> Friday, May 29, 2009, 6:22:42 PM, you wrote:
> >>>
> >>>
> >>>> Horde problem with large mailboxes
> >>>
> >>>> Dear sirs,
> >>>
> >>>> We have installed horde-webmail 1.0.1 on a CentOS 4.7 server with
> >>>> Apache 2.2.11 PHP 5.2.9 MySQL 4.1.22 Qmail 1.03 Courier-Imap 4.1.2.
> >>>
> >>>> We have 4500 email accounts using webmail but we have problems with
> >>>> accounts that have too many emails as it takes more than 2  
> >>>> minutes to load the emails.
> >>>
> >>> Does  it  take  2 minutes to load emails on ordinary email client,  
> >>> for
> >>> example Outlook Express?
> >>>
> >>> How many emails do these accounts have exactly?
> >>>
> >>> Note  that Curier-IMAP is pretty bad when it comes to performance  
> >>> with
> >>> large mailboxes because if is just a wrapper around Maildir.
> >>>
> >>> -- 
> >>> Best regards,
> >>> Vilius
> >>>
> >>> --
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> >>>
> >>
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> >>
> >>
> >
> >
> >
> > Steve Devine
> > Email & Storage
> > Academic Technology Services
> > Michigan State University
> >
> > 313 Computer Center
> > East Lansing, MI 48824-1042
> > 1-517-432-7327
> >
> > --
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> >
> 
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