From: Willy Tarreau <w@1wt.eu>
To: Mike Galbraith <efault@gmx.de>
Cc: stable <stable@vger.kernel.org>,
LKML <linux-kernel@vger.kernel.org>,
Dan Williams <dan.j.williams@intel.com>
Subject: Re: [PATCH] [2.6.32-longterm] ioat2: kill pending flag
Date: Thu, 31 May 2012 16:28:01 +0200 [thread overview]
Message-ID: <20120531142801.GL5321@1wt.eu> (raw)
In-Reply-To: <1338472815.7460.70.camel@marge.simpson.net>
Hi Mike,
On Thu, May 31, 2012 at 04:00:15PM +0200, Mike Galbraith wrote:
> Greetings,
>
> While testing tbench 40 throughput on a 40 core (+SMT) Intel SDV S3E37,
> I found spin_lock_bh() consuming _90%_ of the box, driving throughput
> straight through the floor. The commit below fixed it up.
>
> This looks horrific enough to me to qualify for 2.6.32-longterm.
I've queued it up for next release. Thank you very much!
Willy
prev parent reply other threads:[~2012-05-31 14:28 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-05-31 14:00 [PATCH] [2.6.32-longterm] ioat2: kill pending flag Mike Galbraith
2012-05-31 14:28 ` Willy Tarreau [this message]
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