On Fri, 16 May 2008, Timo Sirainen wrote:
How many imap processes do you have at that time? Each SSL connection uses up one imap-login process.
One sure way to fix this would be to change to high-performance mode as described by http://wiki.dovecot.org/LoginProcess
Currently 74 imap processes, 336 imap-login processes.
I tried switching to high-performance mode yesterday.. It seemed to end up with sort of the same results, though harder to diagnose. Each process I guess ended up hitting the login_process_size = 64 max and then stopped responding. So imap would work for some people and not others. I'd rather have it be broken for all or none, so I switched it back instead of tweaking the performance options. I think there's something in our environment causing this but I have no idea what..
-bryan