From mboxrd@z Thu Jan  1 00:00:00 1970
Date: Fri, 13 Oct 2000 13:57:01 -0300 (BRST)
From: Rik van Riel <riel@conectiva.com.br>
Subject: Re: 2.4.0test9 vm: disappointing streaming i/o under load
In-Reply-To: <Pine.LNX.4.21.0010112341550.11841-100000@ferret.lmh.ox.ac.uk>
Message-ID: <Pine.LNX.4.21.0010131355290.10484-100000@duckman.distro.conectiva>
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To: Chris Evans <chris@scary.beasts.org>
Cc: Roger Larsson <roger.larsson@norran.net>, linux-mm@kvack.org
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On Wed, 11 Oct 2000, Chris Evans wrote:

> Perhaps I'm just asking too much, booting with mem=32M. No point
> testing the new VM with a 128Mb desktop, though; it wouldn't
> break a sweat!
> 
> 2.2 (RH7.0 kernel) does skip less, though, and the duration of
> skip is less.
> 
> Perhaps the two kernels have different elevator settings?

That too. And you just -might- be catching a boundary condition
of the drop-behind code (if the audio isn't kept mapped by any
of the processes, but is left to sit in a file which is write()n
to by one process and is read() by the other).

regards,

Rik
--
"What you're running that piece of shit Gnome?!?!"
       -- Miguel de Icaza, UKUUG 2000

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

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