[Dovecot] Adding capacity by simply migrating to dovecot -- thank you

2009-12-09 Thread Benjamin Connelly
We run a mail service with some hundreds of domains and thousands of users. Xeon 2 CPU server hosting the imap, pop, webmail, db and all trimmings (sepparate servers scanning for spam/viri) The server was io saturated and performing poorly, especially for large webmail users. A constant

Re: [Dovecot] Adding capacity by simply migrating to dovecot -- thank you

2009-12-09 Thread Timo Sirainen
On Wed, 2009-12-09 at 12:43 -0800, Benjamin Connelly wrote: Like a miracle, the load average stays below 1 now, nor do the disks saturate! All's well and webmail performs snappily even during peak usage! If you still want to reduce disk IO, you can also try (if you haven't already): -

Re: [Dovecot] Adding capacity by simply migrating to dovecot -- thank you

2009-12-09 Thread Benjamin Connelly
If you still want to reduce disk IO, you can also try (if you haven't already): - deliver: http://wiki.dovecot.org/LDA/Indexing - maildir_very_dirty_syncs=yes: http://wiki.dovecot.org/MailLocation/Maildir We did switch from maildrop (and courier authd and cyrus sasl) to just dovecot (+sieve