[imp] Sizing an IMP server

[Andrew Morgan]

On Tue, 15 Jul 2003, kenneth yip wrote:

> Hi
>
> We are going to purchase a new Intel based server
> to host the IMP front end. The Mysql back end
> will be located on a Sun V480 server and the IMP
> front end will access 2 backend e-mail servers using IMAP.
>
> This Intel based server will run RH Linux and
> very likely, with php accelerator. We haven't
> determined whether to force all login to use SSL,
> probably, we will let our users to choose by
> themselves.
>
> >From our existing webmail interface (not IMP),
> the number of concurrent login users is around 1000
> to 1300 and peak at 2000.
>
> I am planning to get a dual Xeon 2.8G and 2GB memory
> for this server. If anyone has experience in deploying
> IMP in similar environment, please advise whether
> the sizing is enough or not.
>
> Any input is welcomed.
>
> Thanks in advance.
>
> Regards,
> Kenneth

We run IMP, Kronolith, and Turba for our users on two Dell 2650s (dual
2.2GHz P4 Xeon, 1GB RAM) sitting behind a Foundry Networks ServerIronXL
hardware load balancer.  You can view the session and load average stats
at:

http://admin.onid.oregonstate.edu/cacti/graph_view.php?action=tree

Click on a graph to view more details on each metric.  We have anywhere
from 10000 to 15000 logins per day, although right now is definately a
slow time.

	Andy