[imp] Who use it

[Gary Windham]

Quoting Myke Place <mp at xmission.com>:

> * Richard Zuidhof (rzuidhof at zonnet.nl) [031115 04:54] spake thusly:
> > Eric Rostetter <eric.rostetter at physics.utexas.edu>:
> <snip>
> > We are doing 150,000 unique webmail users per day on two dual 1,8 Ghz Xeon
> > machines. In the peak hours some delay is noticeable so we are moving a
> > third one in and will install the APC accelerator and Mcrypt support. Each
> > machine runs an imap proxy because the mail is stored elsewhere.
>
> Could you expand a little bit on the way your system is setup? I'm
> interested to hear about experiences with running more than one physical
> box in parallel for Horde/IMP.

We are another fairly large site that is using multiple servers for a single
Horde/IMP installation.

We have ~50,000 accounts, and have seen (during our busiest periods) upwards of
100K unique IMP logins in a single day.

We have 3 Horde/IMP servers behind a CoyotePoint Equalizer 350 load balancer;
session state is shared via NFS.  The servers are all Dell PE 2600's 2-way
systems.  Two of them have 2.4GHz P4 Xeon CPUs/4GB RAM, the 3rd has 2.0GHz P4
Xeon CPUs/2GB RAM.

We also use Zend's PHP accelerator product, which helps out alot, and the
up-imapproxy software (http://imapproxy.org) which caches connections to the
IMAP server.

--
Gary Windham
Systems Programmer, Principal
The University of Arizona, CCIT