Such connections do not exist on the front-end that connects to director hosts, so it's something between director and dovecot only.

On Wed, Sep 21, 2016 at 1:16 PM, Webert de Souza Lima

wrote:

Hello,

I have a 2 director - 2 dovecot set up in a cluster.

From time to time I notice high usage of RAM by dovecot process, and analyzing with doveadm who, I see many users with dozens, even hundreds of PIDs.

Inspecting those PIDs I see each one of them is an IMAP connection, coming from either director process, and ESTABILISHED.

A deeper analysis shows me that there ltos of connections from the same users to BOTH dovecot instances, but as I am using director, this shouldn't happen, right? Ok. The thing is, one of the dovecot instances have only old connections (like 3 days old) and the other dovecot have some old and some newer connections.

So, director is redirecting recent connections to the right dovecot, as expected, but it is keeping many of old and unused connections open, consuming resources.

output of doveconf -n from dovecot: http://pastebin.com/trMEjeAs

output of doveconf -n from director: http://pastebin.com/EUpHYMKY

Thanks.