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From: Ed Tomlinson <tomlins@cam.org>
Organization: me
To: Helge Hafting <helgehaf@aitel.hist.no>, linux-kernel@vger.kernel.org
Subject: Re: o(1) to the rescue
Date: Fri, 18 Jan 2002 07:31:41 -0500
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On January 18, 2002 05:21 am, Helge Hafting wrote:
> Ed Tomlinson wrote:
> > Try this with and without the o(1) scheduler (J0).
> >
> > Create a dir full of 1 meg or so jpegs.  Fire up kde.  Try using the
> > Tools/Create image gallery.
> > With the standard scheduler linux is unusable - it stalls for most of the
> > processing time for
> > each image.   With o(1) its just a little jerky - still usable though (a
> > gallery is building as I
> > type this).
>
> I guess this thing starts a thread per image?  That would
> give a lot of _running_ processes, which is exactly what
> the O(1) scheduler improves.

No.  Just one thread running.  I think its the fact that o(1) detects when
a task is no longer interactive.   KDE is normally very interactive, when
building a gallery parts of it are not.  o(1) detect this and adjusts itself.

This is on a UP K6-III 400 with 512M memory.

Ed Tomlinson
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