dovecot - Aug 2012 - imap-login process_limit (100) reached, client connections are being dropped

noticed this in the log today, after about 11 warning IMAP appears to have
not worked, 'service dovecot reload' got it going again

question: what to check/alter ?

----------------
# grep process_limit  /var/log/maillog
Aug 13 15:31:44 geko dovecot: master: Warning: service(imap-login):
process_limit (100) reached, client connections are being dropped
'''
Aug 13 20:45:35 geko dovecot: master: Warning: service(imap-login):
process_limit (100) reached, client connections are being dropped

# doveconf -n | grep limit
#
# dovecot --version
2.1.1
# ps ax | grep imap | wc
    109     546    4693
# ps ax | grep imap-login  | wc
     57     286    2619
# doveadm who | wc

     16     122    1531



centos 6, 20 virtual domains, 100 users


-- 
Voytek Eymont

On 13.8.2012, at 14.12, Voytek Eymont wrote:
> noticed this in the log today, after about 11 warning IMAP appears to have
> not worked, 'service dovecot reload' got it going again
> 
> question: what to check/alter ?
http://wiki2.dovecot.org/LoginProcess

Easiest/safest is to just increase process_limit.