linux-kernel - Re: [MMTests] IO metadata on XFS

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Message-ID: <20120703130414.GD14154@suse.de>
Date:	Tue, 3 Jul 2012 14:04:14 +0100
From:	Mel Gorman <mgorman@...e.de>
To:	Christoph Hellwig <hch@...radead.org>
Cc:	Dave Chinner <david@...morbit.com>, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org,
	xfs@....sgi.com, dri-devel@...ts.freedesktop.org,
	Keith Packard <keithp@...thp.com>,
	Eugeni Dodonov <eugeni.dodonov@...el.com>,
	Daniel Vetter <daniel.vetter@...ll.ch>,
	Chris Wilson <chris@...is-wilson.co.uk>
Subject: Re: [MMTests] IO metadata on XFS

On Mon, Jul 02, 2012 at 08:35:16PM +0100, Mel Gorman wrote:
> > <SNIP>
> >
> It was obvious very quickly that there were two distinct regression so I
> ran two bisections. One led to a XFS and the other led to an i915 patch
> that enables RC6 to reduce power usage.
> 
> [c999a223: xfs: introduce an allocation workqueue]
> [aa464191: drm/i915: enable plain RC6 on Sandy Bridge by default]
> 
> gdm was running on the machine so i915 would have been in use. 

Bah, more PEBKAC. gdm was *not* running on this machine. i915 is loaded
but X is not.

-- 
Mel Gorman
SUSE Labs
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