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From: michaelv@MindBender.HeadCandy.com (Michael L. VanLoon)
Newsgroups: comp.os.386bsd.misc
Subject: Re: How fast? [was: ... slugish ...]
Date: 17 Dec 1994 17:31:18 GMT
Organization: HeadCandy Associates... Sweets for the lobes.
Lines: 37
Message-ID: <MICHAELV.94Dec17113118@MindBender.HeadCandy.com>
References: <1994Nov28.194617.18912@system9.unisys.com> <3bf6ou$pm7@wup-gate.wup.de>
<MICHAELV.94Dec9223853@MindBender.HeadCandy.com>
<3cs7rd$k1u@news.demos.su>
NNTP-Posting-Host: mindbender.headcandy.iastate.edu
In-reply-to: pin@demos.su's message of 16 Dec 1994 14:22:37 GMT
In article <3cs7rd$k1u@news.demos.su> pin@demos.su (Ivan Popov) writes:
I tried to compile same package (screen control libraries)
on the same computer (386/25, 4Mb RAM)
under FreeBSD-2.0 (generic kernel)
and under Demos-86 (real mode UNIX for i8086 [sic], using 640K mem
with /tmp in extended memory).
The result: _user_ times used are almost the same (about 17 min)
_real_ times used are: 50 min under Demos-86,
90 min under FreeBSD-2.0
In both cases other activity in the system was reduced to the minimum -
no users, no activity of daemons.
The difference between user and real times was due to I/O and swapping.
(BTW in the case of Demos-86 all passes of the compiler and make itself
fit into 640K, hence almost no swapping)
That was not a precise experiment, but the results are obvious :-)
The only thing that is obvious is that you haven't proven anything.
The two systems are so totally different that your experiment only
proves they are different.
I'll bet the FreeBSD system, in spite of the fact that it was idle,
was doing a whole lot more in the background than the Demos system.
This is the same argument that Windoze users use who want to run NT on
their 1MB Windoze 3.1 systems, and can't figure out why it shouldn't
work.
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Michael L. VanLoon michaelv@HeadCandy.com michaelv@iastate.edu
Free your mind and your machine -- NetBSD free un*x for PC/Mac/Amiga/etc.
Working NetBSD ports: 386+PC, Mac, Amiga, HP300, Sun3, Sun4c, PC532
In progress: DEC pmax (MIPS R2k/3k), VAX, Sun4m
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