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From: reisert@mast.enet.dec.com (Jim Reisert)
Newsgroups: comp.sys.ibm.pc.misc
Subject: Re: Is DOS 5.0 really so slooow!
Message-ID: <23860@shlump.lkg.dec.com>
Date: 26 Jun 91 17:26:48 GMT
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Organization: Digital Equipment Corporation - Maynard, MA
Lines: 24


In article <7153@bwdls58.bnr.ca>, mlord@bwdls58.bnr.ca (Mark Lord) writes...

>EMM386 places the 386/486 CPU into Virtual-8086 mode, which generally slows
>things down slightly, and specifically slows interrupts down more than
>slightly.

>This is more likely the real cause of the slight performance hit.

Doesn't QEMM also put the processor into Virtual-8086 mode? I've found
performance hits using coprocessor instructions with QEMM loaded (worse hits
with EMM386), but no hit with no memory manager loaded.

- Jim

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