*BSD News Article 21946


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Newsgroups: comp.os.386bsd.misc,comp.os.linux
Subject: Re: FYI.. benchmarks on linux and 386bsd
Message-ID: <28umsn$n4d@GRAPEVINE.LCS.MIT.EDU>
From: metcalf@CATFISH.LCS.MIT.EDU (Chris Metcalf)
Date: 6 Oct 1993 15:05:59 GMT
References: <2CB12A8D.17397@news.service.uci.edu>
Organization: MIT Laboratory for Computer Science
Keywords: benchmarks speed downers uppers and other dirty laundry
Summary: Linux HZ is 100, so the results are *IDENTICAL*
NNTP-Posting-Host: catfish.lcs.mit.edu
Lines: 20

In article <2CB12A8D.17397@news.service.uci.edu>,
Jeff Stern <jstern@aris.ss.uci.edu> wrote:
>I recently switched from 386bsd to linux, and happened to find some
>benchmarks I had archived from when the same machine was running
>386bsd, and thought I'd run them again under linux.  ...
>
>Dhrystones per Second [386BSD]:                     8695.7
>Dhrystones per Second [Linux]:                      5217.4

Please note that "HZ" on Linux is 100, not 60, unlike most other common
Unix systems (SunOS, Ultrix, *BSD, etc.).  Since 5217.4 / 8695.7 is
*exactly* 60/100, it's clear that the time taken under Linux was exactly
the same as the time taken under 386BSD.  Note also that the "Dhampstone"
results were identical.

Remember, these are designed to CPU-only benchmarks, so they don't
exercise the OS at all.  Leave those "shared library" theories at home :-)
-- 
			Chris Metcalf, MIT Laboratory for Computer Science
			metcalf@cag.lcs.mit.edu   //   +1 (617) 253-7766