From:	Cesar Rabak <csrabak AT uol DOT com DOT br>
Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: Environment setting for running DJGPP in plain DOS in Win9x
Date:	Thu, 18 Jan 2001 23:11:30 -0200
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Eli Zaretskii wrote:
> 
> I'm confused.  Are you saying that running some program built with YAMD
> slows down Emacs?

Sorry if I'm confusing... writing at 11:00PM may be part of the cause. .
.

No. I'm not saying that. The reason that motivates the use of plain DOS
was the needs of YAMD. Once in this environment, we started to notice
the difference in performance.

> > I'm not an Emacs guru, but I surmise that to call compile, grep, etc.
> > from within it has to. Doesn't it?
> 
> No.  Paging is done by the DPMI host, or by the underlying OS, not by the
> DJGPP application.  The DPMI host will only cause paging when it doesn't
> have available memory to satisfy the currently active program's requests.
> 
> In other words, if you have enough free memory to hold both Emacs and
> what's running under it, no paging should be visible.

OK. 

> 
> > Also, the _loading_ process is by itself visible more slow in plain DOS
> > than in a Win98 DOS Box.
> 
> If this is a ccompanied by the disk LED being constantly ON, it means
> that you need a disk cache.

Yes it accompanied of the LED and the noise of the disc working. I'm
after the disk cache operating when in plain DOS as per this thread
instructions.

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