Hi,
I'm running Dovecot 1.1.3 on FreeBSD 7.0. In the past couple days, I've been seeing errors like this:
Sep 9 08:43:51 sysvol dovecot: pop3-login: socketpair() failed: No buffer space available Sep 9 08:43:51 sysvol dovecot: pop3-login: socket(default) failed: No buffer space available Sep 9 08:43:51 sysvol dovecot: pop3-login: Can't connect to auth server at default: No buffer space available Sep 9 08:25:15 sysvol dovecot: pop3-login: socketpair() failed: No buffer space available pop3-login: Can't connect to auth server at default: No buffer space available
What ends up happening is that the port doesn't accept any new connections until there is enough buffer space.
Yesterday, I saw it a LOT with POP3 and changed my config login processes: login_process_per_connection: no login_process_size: 256 login_processes_count: 6 This seemed to clear up the issues, but now it's occurring again this morning.
I haven't had any of these since I made that change either.. So there's some progress... : Sep 8 12:53:40 sysvol dovecot: Temporary failure in creating login processes, slowing down for now
TOP shows: Mem: 267M Active, 5558M Inact, 1637M Wired, 217M Cache, 214M Buf, 87M Free Swap: 4096M Total, 4096M Free
At this time, there are 120 imap processes, 10 POP and 1 dovecot and 1
dovecot-auth
pop and imap both have 6 login processes.
It doesn't seem like a load issue, but obviously something is set too
low or unavailable...
It's fixed for a period of time when I restart dovecot. I did a netstat -m prior to restart, and after restart, and the only main difference was this line: Before: 11/414/425/12800 4k (page size) jumbo clusters in use (current/cache/total/max) After: 0/425/425/12800 4k (page size) jumbo clusters in use (current/cache/total/max) (After about 5 minutes 'current' went to 3)
This machine also runs NFSd and MySQL.
Any ideas?
Thanks, Rick