linux-kernel - Re: 2.6.24-rc1: First impressions

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Date:	Mon, 29 Oct 2007 12:40:48 +0100
From:	Ingo Molnar <mingo@...e.hu>
To:	Martin Knoblauch <knobi@...bisoft.de>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, a.p.zijlstra@...llo.nl,
	wfg@...l.ustc.edu.cn, torvalds@...ux-foundation.org,
	riel@...hat.com
Subject: Re: 2.6.24-rc1: First impressions


* Martin Knoblauch <knobi@...bisoft.de> wrote:

>  One of the reasons I do 15 GB transfers is to make sure that I am 
>  well above the possible page cache size. And of course I am doing a 
>  final sync to finish the runs :-) The sync is also running faster in 
>  2.6.24-rc1.
> 
>  If I factor it in the results for dd1/dd3 are:
> 
> test                2.6.19.2        2.6.22.6    2.6.24-rc1
> sync time              18sec           19sec          6sec
> dd1                     27.5            47.5            92
> dd3                    3x9.1           3x8.5          3x29
> 
> So basically including the sync time make 2.6.24-rc1 even more 
> promosing. Now, I know that my benchmarks numbers are crude and show 
> only a very small aspect of system performance. But - it is an aspect 
> I care about a lot. And those benchmarks match my use-case pretty 
> good.

indeed. I'm even more impressed :)

	Ingo
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