linux-kernel - Re: [RFC patch 15/27] Immediate Values

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Message-ID: <20080417125604.GA16219@Krystal>
Date:	Thu, 17 Apr 2008 08:56:04 -0400
From:	Mathieu Desnoyers <mathieu.desnoyers@...ymtl.ca>
To:	Adrian Bunk <bunk@...nel.org>
Cc:	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>,
	linux-kernel@...r.kernel.org,
	Rusty Russell <rusty@...tcorp.com.au>,
	Andi Kleen <andi@...stfloor.org>,
	Christoph Hellwig <hch@...radead.org>, akpm@...l.org
Subject: Re: [RFC patch 15/27] Immediate Values - Documentation

* Adrian Bunk (bunk@...nel.org) wrote:
> On Thu, Apr 17, 2008 at 06:52:54PM +0900, KOSAKI Motohiro wrote:
> > > +Memory read:
> > > +644.09ツア11.39 - 88.16ツア1.35 = 555.93ツア11.46 cycles
> > > +
> > > +Getppid without memory pressure:
> > > +1462.09ツア18.87 - 150.92ツア1.01 = 1311.17ツア18.90 cycles
> > > +
> > > +Getppid with memory pressure:
> > > +17113.33ツア1655.92 - 578.22ツア269.51 = 16535.11ツア1677.71 cycles
> > > +
> > > +Therefore, if we add 2 markers not based on immediate values to the getppid
> > > +code, which would add 2 memory reads, we would add
> > > +2 * 555.93ツア12.74 = 1111.86ツア25.48 cycles
> > 
> > sorry..
> > 
> > non ascii character is harmful for some language region user.
> > Couldn't you write ascii only?
> 
> The kernel is UTF-8, and this shouldn't be a problem.
> 
> The problem seems to be that Mathieu's emails don't contain a header 
> indicating the charset.
> 

I removed the UTF-8 characters for now. Someday I should fix my
quilt+exit4 setup, when I find the time. :)

Thanks,

Mathieu

> cu
> Adrian
> 
> -- 
> 
>        "Is there not promise of rain?" Ling Tan asked suddenly out
>         of the darkness. There had been need of rain for many days.
>        "Only a promise," Lao Er said.
>                                        Pearl S. Buck - Dragon Seed
> 

-- 
Mathieu Desnoyers
Computer Engineering Ph.D. Student, Ecole Polytechnique de Montreal
OpenPGP key fingerprint: 8CD5 52C3 8E3C 4140 715F  BA06 3F25 A8FE 3BAE 9A68
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