On Fri, Mar 20 2015 21:06:12 +0200, Timo Sirainen wrote: > On 22 Jan 2015, at 14:01, Lauri Tirkkonen <ltirk...@niksula.hut.fi> wrote: > > > > Hi, with a low soft limit on file descriptors, dovecot 2.2.15 warns on > > startup: > > > > Warning: fd limit (ulimit -n) is lower than required under max. load > > (256 < 1000), because of default_client_limit > > > > It could try increasing the limit first, and only report the warning if that > > fails. I'm attaching a patch that does just this. > > It could .. But somehow it doesn't seem like a good idea to me to do > automatically. Maybe the limits are there intentionally.
I would make the argument that that's why there are both soft and hard limits. Any program can raise their soft ulimits to the current hard limit - I see the soft limit as more of a guard against misconfiguration than a resource control, so I don't think there is anything wrong with raising it when you have a legitimate reason to do so. On systems with low default fd limits (such as some illumos distributions; see https://www.illumos.org/issues/3772), the alternative is requiring administrators to create startup wrappers for dovecot that raise the limit, but since it's not a privileged operation that just seems silly. -- Lauri Tirkkonen Niksula systems specialist
