From: Lawrence Greenfield (leg plus at andrew dot cmu dot edu)
Date: Wed Oct 03 2001 - 14:04:25 EDT
It's much more important that you understand what is causing such a
high load on your system right now.
We support over 5000 concurrent connections on two 450 MHz
UltraSpace-II processors and 2 gigs of memory, and run at peak times
at around a 3 load average.
It's also important to think about I/O channels.
You also didn't mention what version of Cyrus you're running.
Larry
From: Kiarna Boyd <>
Date: Wed, 3 Oct 2001 08:27:31 -0400
Organization: GSD
Good morning folks!
I want to draw on your collective experience on cyrus servers hardware.
I currently have a Sun Ultra 10 with a 400Mhz processor and half gig of ram.
An average of 150+ concurrent users is pegging my CPU at high 90's between kernel use and user.
If I break it down it is the heavy IMAP traffic.
So I need to spec out a new ideal server.
I am thinking 2 processor and a full gig of ram.
However I want to plan on 400+ concurrency just to have some elbow room.
This is a school so we get a a lot of surprise email traffic.
Any suggestions?
I really appreciate you taking the time to help me with this!
-Kiarna
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