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Date: Wed, 12 Jan 2005 17:41:01 +0000
From: Christoph Hellwig <hch@infradead.org>
To: Christoph Lameter <clameter@sgi.com>
Cc: Christoph Hellwig <hch@infradead.org>, Andrew Morton <akpm@osdl.org>,
       Nick Piggin <nickpiggin@yahoo.com.au>, torvalds@osdl.org, ak@muc.de,
       hugh@veritas.com, linux-mm@kvack.org, linux-ia64@vger.kernel.org,
       linux-kernel@vger.kernel.org, benh@kernel.crashing.org
Subject: Re: page table lock patch V15 [0/7]: overview
Message-ID: <20050112174101.GA5838@infradead.org>
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On Wed, Jan 12, 2005 at 09:37:27AM -0800, Christoph Lameter wrote:
> 
> The benefits start to be significant pretty fast with even a few cpus
> on modern architectures:
> 
> Altix  no patch:
>  Gb Rep Threads   User      System     Wall flt/cpu/s fault/wsec
>   1  10    1    0.107s      6.444s   6.055s100028.084 100006.622
>   1  10    2    0.121s      9.048s   4.082s 71468.414 135904.412
>   1  10    4    0.129s     10.185s   3.011s 63531.985 210146.600
> 
> w/patch
>  Gb Rep Threads   User      System     Wall flt/cpu/s fault/wsec
>   1  10    1    0.094s      6.116s   6.021s105517.039 105517.574
>   1  10    2    0.134s      6.998s   3.087s 91879.573 169079.712
>   1  10    4    0.095s      7.658s   2.043s 84519.939 268955.165

These smaller systems are more likely x86/x86_64 machines ;-)

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