Seth Mattinen wrote:
Richard Hobbs wrote:
Curtis Maloney wrote:
Phillip Macey wrote:
Oh, we serve Maildir via Dovecot IMAP and 5000 messages per folder are a wimp. Problems start if the user: We are having some performancec issues on our server at the moment - all I can put it down to is the large size of some maildirs. Eg.
ls -ld Maildir/curmight show a directory >20Mb in size for some of our users (20-30k emails). (Performance issues == everything is running ok then all of a sudden load avg goes through the roof, system cpu time goes crazy. Reading mail grinds to a halt. Then everything recovers just as suddenly and the load avg gradually returns to normal levels) At first glance this sounds like a large folder is being indexed... are you using Dovecot deliver (which updates indices on deliver)? This raises an interesting question for me actually... given that we've now decided dovecot and maildir is the way forward for us, which delivery method should we use in exim? exim can support maildir, (right?) and so can dovecot, so should i use dovecot's "deliver" mechanism, or exim's own internal mechanism?Only dovecot 'deliver' will update the index on delivery.
Do does this mean that it's slightly slower to actually deliver the mail with dovecot (because it's writing two places instead of one), but it saves the files having to be indexed again, so overall potentially faster?
And one more question... given that we're going to be using maildir, should i still use dovecot's POP3 server, or whatever the standard one is? I've heard (through google mainly), that dovecot's POP3 server, in terms of performance, is actually quite bad compared to other ones, but what's your take on this?
Thanks again, people!
Richard.
-- Richard Hobbs (IT Specialist) Toshiba Research Europe Ltd. - Cambridge Research Laboratory Email: richard.hobbs@crl.toshiba.co.uk Web: http://www.toshiba-europe.com/research/ Tel: +44 1223 436999 Mobile: +44 7811 803377