On Mon, Nov 25, 2013 at 09:53:14AM +0100, Frerich Raabe wrote: > > I run a small IMAP server for a dozen guys in the office, serving > about 55GB of Maildir. I recently became aware of the Zlib plugin ( > http://wiki2.dovecot.org/Plugins/Zlib ) and wondered > > 1. given that there is about zero CPU load on my IMAP server, is > enabling the plugin a no-brainer or are there other things (except > CPU load) to consider?
Yes, it's a no-brainer. I can't remember how the cpuload was before we enabled zlib, but our cpus are running 80% idle (6 servers, mix of IBM x3550 and x346, serving 15TB mdbox, but was serving maildir with zlib a year ago). > > 2. For enabling the plugin, I suppose you compress all the existing > mail just once and then add 'zlib' to mail_plugins in order to have > all future incoming mail saved? You don't strictly need to compress existing mail. It should handle a mix of compressed and non-compressed messages in the same maildir. -jf
