On Feb 25, 2010, at 3:29 PM, Bradley Giesbrecht wrote:
On Feb 25, 2010, at 2:17 PM, Terry Barnum wrote:
I have postfix/dovecot/mysql installed using MacPorts on a quad-core 2.8GHz MacPro running Snow Leopard (10.6.2). I moved the base mail directory to a pair of 10k RPM Raptors that are mirrored (/Volumes/email/) and everything seems to be working fine on an unused domain with very little traffic. I used imapsync to pull everything from the current mailserver to this test server to play with.
Our current mailserver's IMAP performance *really* suffers when an IMAP folder exceeds ~500MB or ~5k messages. I've become very tired of being the mailbox police trying to get my 20 users to delete email or divide into smaller mailboxes.
Are there folks on the list running postfix/dovecot on similar Mac hardware that can share their experiences? Specifically, are there any limitations (file descriptors, other?) that can impact performance I should be aware of? How does dovecot on the Mac deal with >500GB maildirs?
Is there a recommended tool for loading and testing the server? Postal?
I have 20 IMAP users, with a total of ~37GB of mail currently.
Thanks for any help and insight.
Mac OS X 10.5.8 dovecot 1.2.9 Two mirrored 7200rpm sata drives. dbox mailbox format
Thanks Brad. What hardware is this running on? Also, are you using the plain vanilla Apple RAID tool for mirroring or something else like SoftRAID?
My Inbox is 3.5G on disk and I'm happy with my performance. Mail.app took 8 sec. to search my Inbox for "postfix" but caches mail. Telnet imap login took 55 sec. for 'search text "postfix"'. New mail notifications in Mail.app are near instant. I know your old box fails here.
// Brad
Terry Barnum digital OutPost San Diego, CA
http://www.dop.com 800/464-6434