pg.ddx.io  pgsql-admin@postgresql.org mailing list archive  
help / color / mirror / Atom feed
From: Ondřej Světlík <osvetlik@flexibee.eu>
To: pgsql-admin@postgresql.org
Subject: Autovacuum of pg_shdepend
Date: Wed, 4 May 2016 17:08:34 +0200
Message-ID: <572A1072.5080308@flexibee.eu> (raw)
List-Unsubscribe: <mailto:majordomo@postgresql.org?body=unsub%20pgsql-admin>

Hello,

we have a strange problem with autovacuum. We have three workers, but 
usually only one works and two are waiting as they are all trying to 
process table pg_shdepend which is shared between all databases.

We have two clusters, both have a few thousands of databases. Because of 
this problem the autovacuum process can't keep up and the planner uses 
old data causing large impact on the performance.

Is there a way to prevent this behaviour, please?

With regards

Ondřej Světlík


-- 
Sent via pgsql-admin mailing list (pgsql-admin@postgresql.org)
To make changes to your subscription:
http://www.postgresql.org/mailpref/pgsql-admin



view thread (10+ messages)  latest in thread

Message-ID: <572A1072.5080308@flexibee.eu>
Permalink:  ../572A1072.5080308@flexibee.eu/
Also on:    postgresql.org/message-id/572A1072.5080308@flexibee.eu

 · 

reply

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Reply to all the recipients using the --to and --cc options:
  reply via email

  To: pgsql-admin@postgresql.org
  Cc: osvetlik@flexibee.eu
  Subject: Re: Autovacuum of pg_shdepend
  In-Reply-To: <572A1072.5080308@flexibee.eu>

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

This inbox is served by DDX for PostgreSQL; see mirroring instructions
for how to clone and mirror all data and code used for this inbox