Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!tut.cis.ohio-state.edu!ucbvax!decwrl!labrea!helman@isl.Stanford.EDU
From: helman@isl.Stanford.EDU (Jim Helman)
Newsgroups: comp.sys.next
Subject: Re: Preliminary NeXT Benchmark Results
Summary: hard drives, how vast, how fast?
Keywords: benchmarks performance
Message-ID: <393@isl.stanford.edu>
Date: 20 Feb 89 18:34:14 GMT
References: <1887@cps3xx.UUCP>
Reply-To: helman@isl.UUCP (Jim Helman)
Organization: Stanford University
Lines: 36

In article <1887@cps3xx.UUCP> riordan@frith.UUCP (Mark Riordan) writes:
>All numbers are normalized indices of performance, with larger numbers
>being better.
>
>
>             NeXT    12 Mhz      20 Mhz      Sun 3/50   Sun 3/260  Sun 4/250
>                     AT clone    Decent 386
...
>Sequential  1 hard;    0.2         1 (DOS)     0.3         1          1.3
>disk I/O    0.5 od
>
>I find the sequential I/O performance of the NeXT machine (both hard disk and
>optical) rather impressive.  I'm also impressed at the speed of the 80386
>machines under DOS, especially with 32-bit compilers.  (Note:  Xenix and
>System V ports on a 386 seem to have much slower disk I/O than DOS.)
>

It's very hard to come to any conclusions at all from the disk I/O
comparions with the Suns without knowing what kind of drive and
controller were used in the benchmark, e.g., did the 3/260 have a SCSI
drive or a 3.0MB/sec SMD drive on a 753 controller.  Such missing
factors could change things by a factor of 2 or more.

Does anyone know the characteristics of the NeXT's hard drive?

Jim Helman
Department of Applied Physics			P.O. Box 10494
Stanford University				Stanford, CA 94309
(jim@thrush.stanford.edu) 			(415) 723-4940	



Jim Helman
Department of Applied Physics			P.O. Box 10494
Stanford University				Stanford, CA 94309
(jim@thrush.stanford.edu) 			(415) 723-4940