From: Greg Smith <greg@2ndquadrant.com>
To: Hannu Krosing <hannu@2ndquadrant.com>
Cc: Kevin Grittner <Kevin.Grittner@wicourts.gov>
Cc: pgsql-performance@postgresql.org, Albe Laurenz <laurenz.albe@wien.gv.at>
Subject: Re: Linux I/O tuning: CFQ vs. deadline
Date: Mon, 08 Feb 2010 23:16:13 -0500
Message-ID: <4B70E18D.2040709@2ndquadrant.com> (raw)
In-Reply-To: <1265652529.2153.13.camel@hvost>
References: <4B6FDD26.9010106@2ndquadrant.com>
<D960CB61B694CF459DCFB4B0128514C203938157@exadv11.host.magwien.gv.at>
<4B6FD868020000250002F084@gw.wicourts.gov>
<4B702E05.1000708@2ndquadrant.com>
<1265652529.2153.13.camel@hvost>
Hannu Krosing wrote:
> Have you kept trace of what filesystems are in use ?
>
Almost everything I do on Linux has been with ext3. I had a previous
diversion into VxFS and an upcoming one into XFS that may shed more
light on all this.
And, yes, the whole I/O scheduling approach in Linux was just completely
redesigned for a very recent kernel update. So even what we think we
know is already obsolete in some respects.
--
Greg Smith 2ndQuadrant Baltimore, MD
PostgreSQL Training, Services and Support
greg@2ndQuadrant.com www.2ndQuadrant.com
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To: pgsql-performance@postgresql.org
Cc: greg@2ndquadrant.com, hannu@2ndquadrant.com, Kevin.Grittner@wicourts.gov, laurenz.albe@wien.gv.at
Subject: Re: Linux I/O tuning: CFQ vs. deadline
In-Reply-To: <4B70E18D.2040709@2ndquadrant.com>
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