On 14 Nov 2007, at 23:15, Vincent Fox wrote: > We have all Cyrus lumped in one ZFS pool, with separate filesystems > for > imap, mail, sieve, etc. However, I do have an unused disk in each > array > such that I could setup a simple ZFS mirror pair for /var/cyrus/ > imap so > that the databases are in their own pools. Or even I suppose a UFS > filesystem with directio and all that jazz set.
About 30% of all I/O is to mailboxes.db, most of which is read. I haven't personally deployed a split-meta configuration, but I understand the meta files are similarly heavy I/O concentrators. :wes ---- Cyrus Home Page: http://cyrusimap.web.cmu.edu/ Cyrus Wiki/FAQ: http://cyrusimap.web.cmu.edu/twiki List Archives/Info: http://asg.web.cmu.edu/cyrus/mailing-list.html
