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Date: Wed, 12 Dec 2007 01:09:28 +0100
From: Alejandro Riveira Fernández
<ariveira@...il.com>
To: Rene Herman <rene.herman@...il.com>
Cc: Linux Kernel <linux-kernel@...r.kernel.org>, dpreed@...d.com,
Alan Cox <alan@...rguk.ukuu.org.uk>, pavel@....cz,
andi@...stfloor.org, rol@...917.net,
Krzysztof Halasa <khc@...waw.pl>, david@...idnewall.com,
hpa@...or.com, john@...ffel.org, linux-os@...logic.com
Subject: Re: [RFT] Port 0x80 I/O speed
El Wed, 12 Dec 2007 00:51:25 +0100
Rene Herman <rene.herman@...il.com> escribió:
> On 12-12-07 00:43, Alejandro Riveira Fernández wrote:
>
> > On my AMD 3800 X2 (2000MHz) ULi M1697 2.6.24-rc5 i get:
> >
> > cycles: out 1844674407370808, in 1844674407369087
> >
> > It is not constant but variations are not significant afaics
>
> Eh, oh, I guess you need to compile as a 32-bit binary...
I tried without -O2 as Nigel Cunningham...
cycles: out 1562, in 865
cycles: out 1562, in 866
cycles: out 1555, in 858
cycles: out 1562, in 866
With -m32 -O2
cycles: out 1566, in 876
cycles: out 1555, in 865
cycles: out 1594, in 931
cycles: out 1559, in 874
...
>
> Rene.
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