linux-kernel - Re: [PATCH RFC] x86:Improve memset with general 64bit instruction

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Message-ID: <20140415050128.GH22728@two.firstfloor.org>
Date:	Tue, 15 Apr 2014 07:01:28 +0200
From:	Andi Kleen <andi@...stfloor.org>
To:	Ling Ma <ling.ma.program@...il.com>
Cc:	Andi Kleen <andi@...stfloor.org>, mingo@...hat.com,
	tglx@...utronix.de, hpa@...or.com, neleai@...nam.cz,
	linux-kernel@...r.kernel.org, Ling Ma <ling.ml@...baba-inc.com>
Subject: Re: [PATCH RFC] x86:Improve memset with general 64bit instruction

On Mon, Apr 14, 2014 at 09:31:16PM +0800, Ling Ma wrote:
> The kernel version 3.14 shows memcpy, memset occur 19622 and  14189
> times respectively.
> so memset is still important for us, correct?

Did you ever see it in a profile log as being hot?
I haven't. Static counts don't mean much.

-Andi
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