linux-kernel - Re: [PATCH 2.6.28 1/2] memory: improve find

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Message-ID: <8c5a844a0902050326v2155dbeaq5449f1e373f4245d@mail.gmail.com>
Date:	Thu, 5 Feb 2009 13:26:58 +0200
From:	Daniel Lowengrub <lowdanie@...il.com>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	linux-mm@...ck.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2.6.28 1/2] memory: improve find_vma

On Sun, Feb 1, 2009 at 3:00 PM, Ingo Molnar <mingo@...e.hu> wrote:
>
>  you should time it:
>
>  time ./mmap-perf
>
> and compare the before/after results.
>
>        Ingo
>

I made a script that runs 'time ./mmap-perf' 100 times and outputs the
average.  The output on the standard kernel was:
real: 1.022600
user: 0.135900
system: 0.852600
The output after the patch was:
real: 0.815400
user: 0.113200
system: 0.622200
These results were consistent which isn't surprising considering the
fact that they themselves are averages.
What do you think?
Daniel
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