Re: file system and raid performance
Scott Marlowe <scott.marlowe@gmail.com>
From: "Scott Marlowe" <scott.marlowe@gmail.com>
To: "Andrej Ricnik-Bay" <andrej.groups@gmail.com>
Cc: "Mark Wong" <markwkm@gmail.com>, "pgsql-performance@postgresql.org" <pgsql-performance@postgresql.org>
Date: 2008-08-07T21:30:13Z
Lists: pgsql-performance
On Thu, Aug 7, 2008 at 2:59 PM, Andrej Ricnik-Bay <andrej.groups@gmail.com> wrote: > To me it still boggles the mind that noatime should actually slow down > activities on ANY file-system ... has someone got an explanation for > that kind of behaviour? As far as I'm concerned this means that even > to any read I'll add the overhead of a write - most likely in a disk-location > slightly off of the position that I read the data ... how would that speed > the process up on average? noatime turns off the atime write behaviour. Or did you already know that and I missed some weird post where noatime somehow managed to slow down performance?