Re: Pgbouncer discard all

From: Martín Marqués <martin(dot)marques(at)2ndquadrant(dot)com>
To: Scot Kreienkamp <Scot(dot)Kreienkamp(at)la-z-boy(dot)com>, Nicola Contu <nicola(dot)contu(at)gmail(dot)com>, "pgsql-general(at)lists(dot)postgresql(dot)org" <pgsql-general(at)lists(dot)postgresql(dot)org>
Cc: Alessandro Aste <Alessandro(dot)aste(at)gtt(dot)net>
Subject: Re: Pgbouncer discard all
Date: 2018-10-16 14:22:04
Message-ID: f02b447e-c1e6-450b-8219-ede2053e264c@2ndquadrant.com
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El 16/10/18 a las 09:59, Scot Kreienkamp escribió:
> Are you sure they’re actually waiting?  Don’t forget 10.5 will show the
> last query executed even if the connection is idle.  I believe discard
> all would be the last command the pgbouncer would send to the database
> when the client is done as it resets the connection for the next
> client.  So what you’re describing would seem to be expected behavior. 

He might have been referring to client waiting. That is visible in the
pgbouncer pseudo-database

OTOH if the the waiting is seen in pg_stat_activity, then pgbouncer has
nothing to do. The connection has already been assigned to the client
and the waiting is happening on the database server, not the pooler.

Regards,

--
Martín Marqués http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Training & Services

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