pg.ddx.io  pgsql-performance@postgresql.org mailing list archive  

help / color / mirror / Atom feed
From: Tom Lane <tgl@sss.pgh.pa.us>
To: Tomas Vondra <tv@fuzzy.cz>
Cc: Mark Kirkwood <mark.kirkwood@catalyst.net.nz>
Cc: Andres Freund <andres@2ndquadrant.com>
Cc: pgsql-performance@postgresql.org
Subject: Re: 60 core performance with 9.3
Date: Wed, 30 Jul 2014 08:39:52 -0400
Message-ID: <26683.1406723992@sss.pgh.pa.us> (raw)
In-Reply-To: <3e6b532b0115ffff08e8d0debd76695b.squirrel@sq.gransy.com>
References: <53ACB190.2030206@catalyst.net.nz>
	<CAOR=d=3=Y6yNtwQenwVBGe6ZgjAeA8PwgYb3=aQEKn+vYWhBJA@mail.gmail.com>
	<53ACD6C4.9050605@catalyst.net.nz>
	<20140627091951.GA16680@awork2.anarazel.de>
	<53B283F3.7020005@catalyst.net.nz>
	<20140701101307.GO21422@awork2.anarazel.de>
	<53BF326F.2070903@catalyst.net.nz>
	<20140711082207.GI17261@awork2.anarazel.de>
	<53C711B6.5040802@catalyst.net.nz>
	<53D84E16.90609@catalyst.net.nz>
	<3e6b532b0115ffff08e8d0debd76695b.squirrel@sq.gransy.com>
List-Unsubscribe:  <mailto:majordomo@postgresql.org?body=unsub%20pgsql-performance>

"Tomas Vondra" <tv@fuzzy.cz> writes:
> On 30 Červenec 2014, 3:44, Mark Kirkwood wrote:
>> While these numbers look great in the middle range (12-96 clients), then
>> benefit looks to be tailing off as client numbers increase. Also running
>> with no stats (and hence no auto vacuum or analyze) is way too scary!

> By disabling statistics collector you loose runtime counters - number of
> sequential/index scans on a table, tuples read from a relation aetc. But
> it does not influence VACUUM or planning at all.

It does break autovacuum.

			regards, tom lane


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



view thread (26+ messages)  latest in thread

Message-ID: <26683.1406723992@sss.pgh.pa.us>
Permalink:  ../26683.1406723992@sss.pgh.pa.us/
Also on:    postgresql.org/message-id/26683.1406723992@sss.pgh.pa.us

 · 

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: tgl@sss.pgh.pa.us, tv@fuzzy.cz, mark.kirkwood@catalyst.net.nz, andres@2ndquadrant.com
  Subject: Re: 60 core performance with 9.3
  In-Reply-To: <26683.1406723992@sss.pgh.pa.us>

* 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