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Path: utzoo!mnetor!seismo!ut-sally!husc6!necntc!ames!ptsfa!ihnp4!homxb!gemini
From: gemini@homxb.UUCP (Rick Richardson)
Newsgroups: comp.sys.ibm.pc
Subject: Re: New Dos from Microsoft
Message-ID: <225@homxb.UUCP>
Date: Thu, 16-Apr-87 06:38:39 EST
Article-I.D.: homxb.225
Posted: Thu Apr 16 06:38:39 1987
Date-Received: Sun, 19-Apr-87 05:49:16 EST
References: <705@imsvax.UUCP> <631@edge.UUCP> <1622@bnrmtv.UUCP>
Organization: PC Research, Inc.
Lines: 13
Summary: PROT is faster than REAL

In article <1622@bnrmtv.UUCP>, connery@bnrmtv.UUCP (Glenn Connery) writes:
> > Another consideration:  if'n you put the '286 into protected mode, the
> > CPU *itself* slows way down!
> 
> 1) The 286 runs at least 50% FASTER in protected mode than in REAL mode.

The way I heard it, protected mode is faster than real.  I remember a
conversation I had with one of the Venix (Unix) OS developers, and
he said that when they went from real mode to protected mode Venix on
the PC/AT, context switches were 30% faster.

Rick Richardson, PC Research, Inc: (201) 922-1134  ..!ihnp4!castor!pcrat!rick
	         when at AT&T-CPL: (201) 834-1378  ..!ihnp4!castor!polux!rer