[imp] Benchmarking / Machine requirements

[andrew morgan]

On Wed, 7 Feb 2001, Michael Bull wrote:

> This topic comes up now and again, but I figured I could stir it into
> action once more.  I'm interested in hearing from site adminstrators
> -- particular those in the education fields -- about the size of the
> webserver for IMP, in relation to the size of your
> student/faculty/userbase.  We're beginning a pilot phase of WEBmail
> here, and are expecting we may have to scale up our services as IMP
> becomes more popular.  Did you encounter problems with IMAP server
> load?  If so, what scaling of your IMAP server did you find needed?
>
> I'd like to try and get some of this info collected together and added
> onto the horde website, perhaps; it seems to be a popular question!
>
> Looking forward to your replies.

Our userbase is technically about 20,000 students, staff, and faculty.  A
lot of students use webmail, but most of the faculty and staff have
Exchange accounts.

We run IMP on a 2x400MHz, 1GB RAM E250.  All our connections are over SSL,
which is what really is slowing us down right now.  This machine can
handle about 100-150 simultaneous connections before it gets really slow.
We're looking at installing a crypto card to take the SSL load off of the
processors and let us scale to more concurrent users.

	Andy