Forgot to mention we are running inline compression on our ZFS pools. With "fast" LZJB compression on the filesystems for metadata etc. still a savings of ~2.0. The inboxes are all in /var/cyrus/mail which is set for gzip-6 compression savings of ~ 1.7. Backups run faster so it's win-win.
Combined with Cyrus single-instance store our I/O channels are in fact fairly idle statistically 4% maybe hitting 20% when busy. The Sun V245 mail-stores are fairly modest dual-CPU systems and load runs ~.7 most of the time so all this stuff which you would assume would really shift a lot of load onto CPU doesn't in fact result in any sort of bottleneck. ---- 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
