/**********************************************************
Compile this file and run like
	cdspeedu /dev/cwd0a>file.dat
where /dev/cwd0a is file name of CD-ROM device 
(may be another in your system), file.dat-result file name 
************************************************************/

#include <sys/types.h>
#include <sys/stat.h>
#include <sys/times.h>
#include <fcntl.h>
#include <signal.h>
#include <stdio.h>

#define BLOCKS 320

int j;
int result[BLOCKS];

void fhup()
{
 int i;
 for(i=0;i<j;i++)
 	printf("%u %u\n",i,2000*CLK_TCK/result[i]);
 exit(1);
}

main(argc,argv)
 int argc;
 char *argv[];
	
{
 int fd;
 char * ptr;
 long time1,time2,i;
 struct tms pb;

 signal(SIGINT,fhup);
 
 fd=open(argv[1],O_RDONLY);
 if(fd==-1) {
 	printf("Open error!\n");
 	exit();
 }	
 ptr=(char *)malloc(2048*1000);
 if(!ptr) {
 	printf("Out of memory!\n");
 	close(fd);
 	exit();
 }	
 for(j=0;j<BLOCKS;j++) {
 	time1=times(&pb);
 	read(fd,ptr,2048*1000);
 	time2=times(&pb);
 	result[j]=time2-time1;
 	fprintf(stderr,".");
 }	
 free(ptr);
 close(fd);
 for(i=0;i<BLOCKS;i++)
 	printf("%u %u\n",i,2000*CLK_TCK/result[i]);
}