More Benchmarks

[Jan Stubbs]

	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 the top and bottom and save it in iocall.c
cc iocall.c -o iocall
time iocall

Send all 3 times (user, system, real)
I am reporting the system time only.

Previously posted to net.sources and net.arch with comparisons
to dhrystone benchmark.

         
"The opinions expressed herein are those of the author".
 
Jan Stubbs
NCR Corp.
San Diego, CA
619 485-3052
..sdcsvax!ncr-sd!stubbs

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/*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);
  }
}


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              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