From: Joshua D. Drake <jd@commandprompt.com>
To: Andres Freund <andres@anarazel.de>
To: Jan Gunnar Dyrset <jan.g.dyrset@cybernetica.no>
Cc: pgsql-performance@postgresql.org <pgsql-performance@postgresql.org>
Subject: Re: PostgreSQL disk fragmentation causes performance problems on Windows
Date: Wed, 29 Apr 2015 07:07:04 -0700
Message-ID: <5540E588.9080507@commandprompt.com> (raw)
In-Reply-To: <20150429080854.GD14535@awork2.anarazel.de>
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On 04/29/2015 01:08 AM, Andres Freund wrote:
>> Which OS and filesystem is this done on? Because many halfway modern
>> systems, like e.g ext4 and xfs, implement this in the background as
>> 'delayed allocation'.
>
> Oh, it's in the subject. Stupid me, sorry for that. I'd consider testing
> how much better this behaves under a different operating system, as a
> shorter term relief.
This is a known issue on the Windows platform. It is part of the
limitations of that environment. Linux/Solaris/FreeBSD do not suffer
from this issue in nearly the same manner.
jD
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To: pgsql-performance@postgresql.org
Cc: jd@commandprompt.com, andres@anarazel.de, jan.g.dyrset@cybernetica.no
Subject: Re: PostgreSQL disk fragmentation causes performance problems on Windows
In-Reply-To: <5540E588.9080507@commandprompt.com>
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