Mail Archives: djgpp/1999/10/13/15:24:59
On Tue, 12 Oct 1999, Michael Abbott aka frEk wrote:
> > > I don't know about everyone else but for speed I usually use Win '95s
> > > DPMI...
> >
> > Are you saying that Windows' DPMI server is faster than CWSDPMI? Or are
> > you saying that it is smaller. I find it hard to believe how could
> > someone make such claims.
>
> I know this is the wrong list for this (biased opinion :)
Sorry to disappoint you: I don't think our opinions are biased in this
case. I have hard data to support what I wrote.
> but IN MY EXPERIENCE Windows '95 DPMI has been faster.
I would guess that your system setup with CWSDPMI is far from
optimal. Perhaps you don't have a disk cache installed (Windows 9X
installs a cache by default, but DOS doesn't). See section 3.9 of the
DJGPP FAQ list, for advice about optimal system setup.
My measurements indicate that a given job runs about 40% slower on
Windows than on DOS, on the same machine. However, I don't claim that
Windows DPMI host is slower by 40%, because I suspect most of the
slow-down has nothing to do with the DPMI services, but rather with
the other system processes that run in parallel.
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