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

help / color / mirror / Atom feed

From: Jim Nasby <Jim.Nasby@BlueTreble.com>
To: Tory M Blue <tmblue@gmail.com>
To: Joshua D. Drake <jd@commandprompt.com>
Cc: pgsql-performance@postgresql.org <pgsql-performance@postgresql.org>
Subject: Re: checkpoints, proper config
Date: Fri, 11 Dec 2015 17:45:40 -0600
Message-ID: <566B6024.4030801@BlueTreble.com> (raw)
In-Reply-To: <CAEaSS0Zq=-0mgvk6PjjxY7RbbitxyKKuuHBuA4fG=s66thbfCQ@mail.gmail.com>
References: <CAEaSS0af0GpqQYSwePKRQq6RtX-x9NXDm=jOXcbcGAmGHXapFw@mail.gmail.com>
	<5669B47B.9010504@commandprompt.com>
	<CAEaSS0YJQ68TNffwjU71KxR-JsWfHSitWYgwcw4X=d4WW7zavQ@mail.gmail.com>
	<5669D9E6.8050104@commandprompt.com>
	<CAEaSS0Zq=-0mgvk6PjjxY7RbbitxyKKuuHBuA4fG=s66thbfCQ@mail.gmail.com>
List-Unsubscribe:  <mailto:majordomo@postgresql.org?body=unsub%20pgsql-performance>

On 12/10/15 2:58 PM, Tory M Blue wrote:
> This is a slony slave node, so I'm not too worried about this particular
> host losing it's data, thus fsync is off,

The Amazon RDS team actually benchmarked fsync=off vs sync commit off 
and discovered that you get better performance turning sync commit off 
and leaving fsync alone in some cases. In other cases the difference 
isn't enough to be worth it.
-- 
Jim Nasby, Data Architect, Blue Treble Consulting, Austin TX
Experts in Analytics, Data Architecture and PostgreSQL
Data in Trouble? Get it in Treble! http://BlueTreble.com


-- 
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 (11+ messages)  latest in thread

Message-ID: <566B6024.4030801@BlueTreble.com>
Permalink:  ../566B6024.4030801@BlueTreble.com/
Also on:    postgresql.org/message-id/566B6024.4030801@BlueTreble.com

copy link · copy postgr.es

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: Jim.Nasby@BlueTreble.com, tmblue@gmail.com, jd@commandprompt.com
  Subject: Re: checkpoints, proper config
  In-Reply-To: <566B6024.4030801@BlueTreble.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