pg.ddx.io  pgsql-performance@postgresql.org mailing list archive  
help / color / mirror / Atom feed
From: Markus Schaber <schabi@logix-tt.com>
To: Gábriel Ákos <akos.gabriel@i-logic.hu>
Cc: pgsql-performance@postgresql.org
Subject: Re: count(*) performance
Date: Tue, 28 Mar 2006 13:49:45 +0200
Message-ID: <442922D9.1020402@logix-tt.com> (raw)
In-Reply-To: <44282D45.7020008@i-logic.hu>
References: <C04D6B95.20285%llonergan@greenplum.com>
	<44282D45.7020008@i-logic.hu>

Gábriel Ákos wrote:

> I thought that too. Autovacuum is running on our system but it didn't do
> the trick. Anyway the issue is solved, thank you all for helping. :)

Hi, Gabriel, it may be that your Free Space Map (FSM) setting is way to
low.

Try increasing it.

Btw, VACUUM outputs a Warning if FSM is not high enough, maybe you can
find useful hints in the log file.

HTH
Markus

-- 
Markus Schaber | Logical Tracking&Tracing International AG
Dipl. Inf.     | Software Development GIS

Fight against software patents in EU! www.ffii.org www.nosoftwarepatents.org




view thread (17+ messages)  latest in thread

Message-ID: <442922D9.1020402@logix-tt.com>
Permalink:  ../442922D9.1020402@logix-tt.com/
Also on:    postgresql.org/message-id/442922D9.1020402@logix-tt.com

 · 

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-performance@postgresql.org
  Cc: schabi@logix-tt.com, akos.gabriel@i-logic.hu
  Subject: Re: count(*) performance
  In-Reply-To: <442922D9.1020402@logix-tt.com>

* 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