I've been struggling with SquirrelMail for two months. At about 300 users, the CPU is maxed out and the load average on a dual-Ghz CPU Sun machine climbs into the 80s. I moved it to a larger, 4-processor box and did load testing with software. It appears that the 4 processor machine would handle the load, but I can't be 100% sure--and I really don't want to put the user community on it, and then have to back out again.
I've tried every tuning tip, and what I still see is huge jumps in CPU usage with every login, and I can certainly push the load testing software to break even the 4-CPU machine.
So, I'm here one last time hoping for some answers, perameters, hardware specs, anything before I give up.
I can put it on a dual or quad CPU sun box, with plenty of RAM. I have used both PHP acceleration and the IMAP proxy. On my current system, users login about every 12 seconds, on average, during busy periods. We use iPlanet 5.2 for IMAP (which does not do server side sorting and threading).
Our community has about 6000 students, who are the primary users of webmail. simultaneous users probably hit about 400-500.
Any other iPlanet IMAP users out there? Any last advice before I ditch SM? Any other load issues out there?
begin:vcard fn:Lesli St. Clair n:St. Clair;Lesli email;internet:[EMAIL PROTECTED] version:2.1 end:vcard
