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Date: Fri, 25 Oct 2002 08:09:44 +0900 (JST)
Message-Id: <20021025.080944.74754725.taka@valinux.co.jp>
To: manfred@colorfullife.com
Cc: linux-kernel@vger.kernel.org, arjanv@redhat.com
Subject: Re: [CFT] faster athlon/duron memory copy implementation
From: Hirokazu Takahashi <taka@valinux.co.jp>
In-Reply-To: <3DB82ABF.8030706@colorfullife.com>
References: <3DB82ABF.8030706@colorfullife.com>
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Hello,

> AMD recommends to perform memory copies with backward read operations 
> instead of prefetch.
> 
> http://208.15.46.63/events/gdc2002.htm
> 
> Attached is a test app that compares several memory copy implementations.
> Could you run it and report the results to me, together with cpu, 
> chipset and memory type?
> 
> Please run 2 or 3 times.

Your test dosen't use cache memory on CPU for the both of src and dst.
We should also try it with a smaller buffer.
-
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