Re: PostgreSQL disk fragmentation causes performance problems on Windows - Mailing list pgsql-performance

From Joshua D. Drake
Subject Re: PostgreSQL disk fragmentation causes performance problems on Windows
Date
Msg-id 5540E588.9080507@commandprompt.com
Whole thread Raw
In response to Re: PostgreSQL disk fragmentation causes performance problems on Windows  (Andres Freund <andres@anarazel.de>)
Responses Re: PostgreSQL disk fragmentation causes performance problems on Windows
List pgsql-performance
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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