From: Andres Freund <andres@anarazel.de>
To: pgsql-performance@postgresql.org
Cc: Jon Schewe <jpschewe@mtu.net>
Subject: Re: How filesystems matter with PostgreSQL
Date: Fri, 4 Jun 2010 15:04:02 +0200
Message-ID: <201006041504.03218.andres@anarazel.de> (raw)
In-Reply-To: <4C08EEDF.7090403@mtu.net>
References: <4C08EEDF.7090403@mtu.net>
On Friday 04 June 2010 14:17:35 Jon Schewe wrote:
> Some interesting data about different filesystems I tried with
> PostgreSQL and how it came out.
>
> I have an application that is backed in postgres using Java JDBC to
> access it. The tests were all done on an opensuse 11.2 64-bit machine,
> on the same hard drive (just ran mkfs between each test) on the same
> input with the same code base. All filesystems were created with the
> default options.
>
> XFS (logbufs=8): ~4 hours to finish
> ext4: ~1 hour 50 minutes to finish
> ext3: 15 minutes to finish
> ext3 on LVM: 15 minutes to finish
My guess is that some of the difference comes from barrier differences. ext4
uses barriers by default, ext3 does not.
Andres
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: andres@anarazel.de, jpschewe@mtu.net
Subject: Re: How filesystems matter with PostgreSQL
In-Reply-To: <201006041504.03218.andres@anarazel.de>
* 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