From: Dave Airlie <airlied@gmail.com>
To: James Cloos <cloos@jhcloos.com>
Cc: linux-kernel@vger.kernel.org,
Chris Mason <chris.mason@oracle.com>,
linux-fsdevel@vger.kernel.org, linux-ext4@vger.kernel.org,
linux-btrfs@vger.kernel.org,
jfs-discussion@lists.sourceforge.net
Subject: Re: [Regression] Filesystem I/O is CPU-bound in rc7 and rc8
Date: Sat, 20 Feb 2010 07:02:23 +1000 [thread overview]
Message-ID: <21d7e9971002191302s76111f6fyd986c51b66e214ae@mail.gmail.com> (raw)
In-Reply-To: <m3d403632g.fsf@lugabout.jhcloos.org>
On Thu, Feb 18, 2010 at 6:04 AM, James Cloos <cloos@jhcloos.com> wrote:
> While getting re-aquainted with perf, and after upgrading to the current
> version, I see that do_page_fault, unmap_vmas, get_page_from_freelist,
> handle_mm_fault, __do_fault and T.1339 tend to get the most time when the
> kernel is spinning.
dmesg? lspci -vv?
We have an AGP related issue with WC/UC paging that might be related,
but I'd need more info.
Dave.
next prev parent reply other threads:[~2010-02-19 21:02 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-02-14 3:11 [Regression] Filesystem I/O is CPU-bound in rc7 and rc8 James Cloos
2010-02-14 16:40 ` James Cloos
2010-02-14 23:12 ` Rafael J. Wysocki
2010-02-15 15:45 ` Chris Mason
2010-02-15 19:27 ` James Cloos
2010-02-17 20:04 ` James Cloos
2010-02-19 21:02 ` Dave Airlie [this message]
2010-02-19 21:37 ` James Cloos
2010-02-19 22:03 ` Dave Airlie
2010-02-20 15:59 ` James Cloos
2010-02-21 2:12 ` James Cloos
2010-02-19 21:22 ` Mike Fedyk
2010-02-19 21:44 ` James Cloos
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