On Sun, 2008-05-25 at 05:08 +0300, Timo Sirainen wrote: > On Mon, 2008-05-19 at 12:06 -0400, Bryan Polk wrote: > > On Fri, 16 May 2008, Evaggelos Balaskas wrote: > > > > > -----BEGIN PGP SIGNED MESSAGE----- > > > Hash: SHA1 > > > > > > I hope something like this could help you : > > > > > > # Authentication Cache > > > auth_cache_size = 10240 > > > auth_cache_ttl = 18000 > > > > > > > This may have done the trick! The number of imap-login processes has been > > holding around 60 all morning. > > So I guess most of the login processes were just waiting for > authentication processes to respond? I hadn't thought about that. How > many dovecot-auth processes do you have? Increasing > auth_worker_max_count might be a good idea.
Or it should have actually logged an error in that case: "Couldn't
create new auth worker".
Maybe it's the passwd lookups that are slow? What NSS backend are you
using? It's probably a good idea to make them use auth workers also:
userdb passwd {
args = blocking=yes
}
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