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From: jbuck@epicen.UUCP (Joe Buck)
Newsgroups: net.arch
Subject: Re: IOCALL results and problems
Message-ID: <289@epicen.UUCP>
Date: Fri, 13-Dec-85 23:11:21 EST
Article-I.D.: epicen.289
Posted: Fri Dec 13 23:11:21 1985
Date-Received: Sun, 15-Dec-85 00:31:29 EST
References: <354@ncr-sd.UUCP>
Distribution: net
Organization: Entropic Processing, Inc., Cupertino, CA
Lines: 40
Summary: Very peculiar result calls validity of IOCALL into question

> From: stubbs@ncr-sd.UUCP (Jan Stubbs)
> Date: 12 Dec 85 00:43:23 GMT
> 
> 	IOCALL, A UNIX SYSTEM PERFORMANCE BENCHMARK
> The results so far are below. Thanks everybody.
> Send your results to me directly. The benchmark is a "C" program
> which measures Unix kernel performance.
>... 
> IOCALL RESULTS:
> 
> SYSTEM				UNIX VERSION		SYSTEM TIME SECONDS
> -----------			----------------	-------------------
>...
> Gould PN9080			UTX 1.2			2.5
> Sperry 7000/40 (aka CCI 6/32)	4.2 BSD			1.9 *b
> VAX 8600			4.3 BSD			1.3
> VAX 8600			Ultrix 1.2-1		1.1
> IBM 3083			UTS SV			1.0 *b
> Amdahl 470/V8			UTS/V (SV Rel 2,3)V1.1+ .98 *b

Eunice is a port of Berkeley 4.1bsd that runs on top of VMS. Thus running
something like IOCALL probably isn't valid. Many important Unix system calls
are hundreds of times slower on Eunice, particularly fork, exec, and filename
lookup. Single-character reads are also extremely slow. Keeping this in
mind, I expected an awful time; I wasn't certain whether the reads and writes
would go to disk or not.

So I ran it anyway. Eunice doesn't distinguish between system time and user
time because VMS doesn't. So I'm reporting system+user time and total time.
Are you ready?

System+User time: 1.9 to 2.1 seconds
Total time: 5.0 seconds

I'm running a Vax 750 with FPA using Eunice 3.2 on top of VMS 3.4.

-- 
Joe Buck				|  Entropic Processing, Inc.
UUCP: {ucbvax,ihnp4}!dual!epicen!jbuck  |  10011 N. Foothill Blvd.
ARPA: dual!epicen!jbuck@BERKELEY.ARPA   |  Cupertino, CA 95014