src/test/sysperf/pipe2.c - diff

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version 1.1, 2004/03/28 09:21:53	version 1.2, 2004/03/31 20:27:09
Line 18 main(int ac, char **av)	Line 18 main(int ac, char **av)
int j;	int j;
int bytes;	int bytes;
int divisor;	int divisor;
	int ppri = 999;
int fds[2];	int fds[2];
char *buf;	char *buf;
char *ptr;	char *ptr;

if (ac == 1) {	if (ac == 1) {
fprintf(stderr, "%s blocksize[k,m]\n", av[0]);	fprintf(stderr, "%s blocksize[k,m] [pipe_writer_pri]\n", av[0]);
exit(1);	exit(1);
}	}
bytes = strtol(av[1], &ptr, 0);	bytes = strtol(av[1], &ptr, 0);
Line 40 main(int ac, char **av)	Line 41 main(int ac, char **av)
"valid byte range: 0-32m (k,m suffixes for KB and MB)\n");	"valid byte range: 0-32m (k,m suffixes for KB and MB)\n");
exit(1);	exit(1);
}	}
	if (ac >= 3)
	ppri = strtol(av[2], NULL, 0);

/*	/*
* Tiny block sizes, try to take into account overhead.	* Tiny block sizes, try to take into account overhead.
Line 73 main(int ac, char **av)	Line 76 main(int ac, char **av)
/*	/*
* parent process.	* parent process.
*/	*/
setpriority(PRIO_PROCESS, getpid(), -20);	if (ppri != 999) {
	if (setpriority(PRIO_PROCESS, getpid(), ppri) < 0) {
	perror("setpriority");
	exit(1);
	}
	}
close(fds[1]);	close(fds[1]);
write(fds[0], buf, bytes); /* prime the caches */	write(fds[0], buf, bytes); /* prime the caches */
start_timing();	start_timing();