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From: Michael S <already5chosen@yahoo.com>
Newsgroups: comp.arch
Subject: Re: Instruction Tracing
Date: Mon, 12 Aug 2024 10:56:07 +0300
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On Sun, 11 Aug 2024 21:08:44 -0400
Josh Vanderhoof <x@y.z> wrote:

> BGB <cr88192@gmail.com> writes:
> 
> > Meanwhile, saw a video recently where someone had ported Doom to a
> > 233 MHz PowerPC (running Windows NT4) machine and, its performance
> > was not good...
> >
> > Not obvious is what combination of factors conspired to cause Doom
> > to apparently run at single-digit framerates.
> >
> > Video mentioned that it was drawing using GDI calls, but this by
> > itself wouldn't explain the level of slowness seen in the video.
> >
> > Like, presumably, this would require around 90% + of the clock
> > cycles going into overhead, which seems a bit much.
> >
> >
> > Reference:
> > https://www.youtube.com/watch?v=LAkSJ-HqKw8  
> 
> I think NT4 was before CreateDIBSection existed.  Probably much slower
> without that.

NT4 has CreateDIBSection.