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Date: Fri, 25 Jan 2002 01:35:08 -0200 (BRST)
From: Rik van Riel <riel@conectiva.com.br>
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To: <rwhron@earthlink.net>
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Subject: Re: 2.4.18pre4aa1
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On Thu, 24 Jan 2002 rwhron@earthlink.net wrote:

> > It would be interesting to see the dbench dots from both
> > -aa and -rmap ;)
>
> All the dots are at:
> http://home.earthlink.net/~rwhron/kernel/dots/

I think we have an explanation here.

With dbench 192 on -aa the first processes exit around
halfway through the dbench test and around the end only
few processes are left.

With rmap the write trottling is a bit smoother, but
this results in all processes running to about 70% through
the test and many more processes running at the last part
of the test, exiting simultaneously.

Considering the possible bad consequences for real
workloads, I'm not sure I want to make the system more
unfair just to better accomodate dbench ;)

regards,

Rik
-- 
"Linux holds advantages over the single-vendor commercial OS"
    -- Microsoft's "Competing with Linux" document

http://www.surriel.com/		http://distro.conectiva.com/

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