Hmm, 10K users shouldn't be a problem for a V880 of this magnitude.. we have 4 cpu 420Rs with 4GB of RAM doing this for 8,500 users and the load average hovers around 0.30, so I'm betting unless you have a wildly abusive user base (not uncommon in the University setting!) some tuning may definitely help out. Here is a URL that may be helpful in tuning Cyrus that you may wish to pass along to the IMAP server admins..
http://asg.web.cmu.edu/cyrus/download/imapd/install-perf.html One thing I didn't point out that may help you.. since SquirrelMail has to initiate a completely new IMAP transaction (reauthenticate, etc) for EACH CLICK, I have employed IMAP Proxy (http://www.imapproxy.org/) to keep SquirrelMail from torturing the server.. it runs as the user "nobody" and has a pretty small footprint (roughly 1752K resident memory) and has been very stable for us.. I run it on each Post Office that SM is connecting to.. it even has a nice little monitoring utility so you can keep an eye on the number of simultaneous IMAP connections in use by SquirrelMail. Also, (and this may not be an issue for you) are you using the filters plugin in SquirrelMail? If SIEVE is being offered, I would highly recommend you check out the avelsieve plugin- this is great stuff and would drastically improve the performance of SquirrelMail for the user who wants filtering capabilities.. the filters plugin that comes with SM is nice, but it can't compare to the performance SIEVE gives you.. I think 0.9.4 was released within the last 24 hours (Thanks, Alex!!).. and it's on my list of things to spend some time with today. Keeping this on-list is fine with me, I just didn't want to bring up too much Cyrus specific info since these are the SquirrelMail mailing lists we're posting to. =) -- Chris Winterrowd Unix E-mail Administrator Texas Instruments Inc. [EMAIL PROTECTED] > According to the latest info given to me by our IMAP administrators, we > assign 10,000 accounts to a single V880 (32G RAM, 4 processors [@ 750 MHz > IIRC]). There's approximately 1000 simultaneous IMAP connections from FAT > clients (Eudora, Apple Mail, Evolution, etc) and 400 connections from > SquirrelMail during the business day. This chews up 22 of the 32G of RAM > and puts average load across the processors at 85% user (The rest divvied > up between system, I/O, and idle). > > I'm not the only one with these problems with this setup. If you > 're not > having problems I feel I'd like to keep the discussion on the list so that > others can see what you've done and what I and others are going through. > > Thanks for your help. > > Lee > > -- > Barking moonbat: noun. Someone on the extreme edge of whatever their -ism > happens to be. > > Usage:"Definition of a 'barking moonbat': someone who sacrifices sanity > for the sake of consistency" > -Adriana Cronin > > ------------------------------------------------------- This sf.net email is sponsored by:ThinkGeek Welcome to geek heaven. http://thinkgeek.com/sf -- squirrelmail-users mailing list List Address: [EMAIL PROTECTED] List Archives: http://sourceforge.net/mailarchive/forum.php?forum_id=2995 List Info: https://lists.sourceforge.net/lists/listinfo/squirrelmail-users
