[imp] IMP 3.2.1 very slow

[Rick Romero]

On Thu, 2003-04-24 at 15:12, z33k666 at icqmail.com wrote:
> Quoting Andreas Danzer <ad at ixx.com>:
> 
> > > This has nothing to do with 'mcrypt' or the changes made in Horde. 
> > Instead,
> > > it sounds like you have large mail folders.  If using either mbox format
> > of
> > > maildir format, past a certain size of mailbox (depending on OS, caching,
> > > file system, software, speed of hardware, etc.) they all begin to take
> > > performance hits on the _mail server_ side, not Horde/IMP.  For proof of
> > > this, try logging directly into your IMAP server (e.g. 'telnet localhost
> > > imap').  Go to a directory with a lot of messages (my trash directory has
> > > 4000+ messages in maildir format on a reiserfs file system). Then do an
> > > IMAP search query for unread messages.
> > 
> > Actually it doesn't just take ages to display the messages - IMP isn't
> > able to diplay anything and it's even not possible to login at all
> > (timeouts are set to 1/2 hour). This IS an imp/horde problem as we're
> > able to connect to that mailbox with other frontends. Speed of hardware
> > is hardly an issue as them machines are 2,4GHz P4s with plenty of RAM
> > and a fast disk-array.
> > 
> > I still think that Horde/IMP is a great piece of software, but it
> > looks like that there are some configuration where it's not working
> > well...
> > 
> > Best regards
> > Andreas Danzer
> > 
> > 
> > -- 
> > IMP mailing list
> > Frequently Asked Questions: http://horde.org/faq/
> > To unsubscribe, mail: imp-unsubscribe at lists.horde.org
> > 
> 
> 
> I have had severe speed problems as well.  I read a thread (somewhere) that PHP
> 4.3.x may have something to do with it.  I downgraded to PHP 4.2.3 and the speed
> problems went away.
> 
> I changed everything, c-client, apache, mcrypt, no mcrypt, IMAP servers, etc...
> before I found the thread mentioned above.  I tried logging in with a non-PHP
> client and there were no speed issues.

FWIW, I have noticed that c-client is also a common element...

> With PHP 4.3.1, while watching the IMAP logs, it would take 30+ seconds for the
> server to actually process the login after a button was pressed (the user is
> logged in and out after *any* IMAP request).   After switching to PHP 4.2.3, the
> login process took less than 2 seconds.
> 
> I do not know why this happens.  I cannot find a lot of info on this problem. 
> All I know is, it worked for me on both my production and development servers.
> 
>     * Horde: 2.2.1 and Horde: 3.0-cvs
>     * IMP: 3.2.1 and IMP: 4.0-cvs
>     * Turba: 1.2 and Turba: 2.0-cvs
>     * PHP Version: 4.2.3

I haven't updated my Horde 2.1/ IMP 3.1 install yet, but I have
Horde-cvs and IMP-cvs also installed on the same box.  I run PHP 4.3.1,
and neither install is having any 'slowness' issues.  

I run Courier IMAP.

Rick

> Zeke