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From: stubbs@ncr-sd.UUCP (Jan Stubbs)
Newsgroups: net.arch,net.sources
Subject: Re: IOCALL Benchmark results
Message-ID: <350@ncr-sd.UUCP>
Date: Wed, 4-Dec-85 19:35:07 EST
Article-I.D.: ncr-sd.350
Posted: Wed Dec  4 19:35:07 1985
Date-Received: Thu, 5-Dec-85 08:53:11 EST
Reply-To: stubbs@ncr-sd.UUCP (0000-Jan Stubbs)
Distribution: net
Organization: NCR Corporation, San Diego
Lines: 59
Keywords: unix benchmark
Xref: watmath net.arch:2216 net.sources:3940


	IOCALL, A UNIX SYSTEM PERFORMANCE BENCHMARK
The results so far are at the end of this article. Thanks everybody.
Send your results to me directly. The benchmark is a "C" program
which measures Unix kernel performance. 
To run it:
cut off top and bottom of this article and put it in iocall.c
cc iocall -o iocall
time iocall     

Send all 3 times (user, system, real)
                I am reporting the system time only.
         
"The opinions expressed herein are those of the author".
 
Jan Stubbs
NCR Corp.
San Diego, CA
619 485-3052
..sdcsvax!ncr-sd!stubbs

------cut here------cut here-------------------------------
/*This benchmark tests speed of Unix system call interface
  and speed of cpu doing common Unix io system calls. */

char buf[512];
int fd,count,i,j;

main()
{
 fd = creat("/tmp/testfile",0777);
 close(fd);
  fd = open("/tmp/testfile",2);
  unlink("/tmp/testfile");
for (i=0;i<=1000;i++) {
  count = write(fd,buf,500);
  lseek(fd,0,0);

  for (j=0;j<=3;j++) 
  	count = read(fd,buf,100);
  }
}


------cut-------cut----cut-----------------------------
              IOCALL RESULTS (so far)

SYSTEM			UNIX VERSION		SYSTEM TIME SECONDS
-----------		----------------	-------------------

DEC Rainbow100 w/NECV20 Venix			18.4
VAX 11/750		4.2 BSD			10.0
VAX 11/750		SV.2			9.4
VAX 11/750		4.3 BSD			9.0
VAX 11/750		research version 8	8.1
ATT 7300 Unix PC	SV.2			6.4
Pyramid 90x w/cache	OSx2.2			5.8
VAX 11/780		4.2 BSD			5.7
VAX 11/785		4.3 BSD			3.6