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Date: Sat, 12 Jan 2002 22:16:57 +0100
From: Stephan von Krawczynski <skraw@ithnet.com>
To: Andrew Morton <akpm@zip.com.au>
Cc: ed.sweetman@wmich.edu, andrea@suse.de, yodaiken@fsmlabs.com,
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        nigel@nrg.org, landley@trommello.org, linux-kernel@vger.kernel.org
Subject: Re: [2.4.17/18pre] VM and swap - it's really unusable
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On Sat, 12 Jan 2002 12:23:09 -0800
Andrew Morton <akpm@zip.com.au> wrote:

> Ed Sweetman wrote:
> > 
> > If you want to test the preempt kernel you're going to need something that
> > can find the mean latancy or "time to action" for a particular program or
> > all programs being run at the time and then run multiple programs that you
> > would find on various peoples' systems.   That is the "feel" people talk
> > about when they praise the preempt patch.
> 
> Right.  And that is precisely why I created the "mini-ll" patch.  To
> give the improved "feel" in a way which is acceptable for merging into
> the 2.4 kernel.

Hm, I am not quite sure about what you expect to hear about it, but:

a) It applies cleanly to 2.4.18-pre3.
b) It compiles
c) During a load of around 150 produced by (of course :-) "make -j bzImage" and
concurrent XMMS playing while my mail-client and mozilla are open, I cannot
"feel" a real big difference in interactivity compared to vanilla kernel. XMMS
hickups sometimes, mouse does kangaroo'ing, switching around different
X-screens and screen refresh (especially mozilla of course) are no big hit.

This is a dual PIII-1GHz/2 GB RAM and some swap. During make no swapping is
going on.

Sorry, but I cannot see (feel) the difference in _this_ test (if this is really
a test for what you intend to do). Compile time btw makes no difference either.
Perhaps this try is rather something for ingo and the scheduler...

Regards,
Stephan


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