/*
 * test minimum select time
 *
 *	./prog usec [method [duration]]
 */

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <sys/time.h>
#include <poll.h>

int
main(int argc, char *argv[])
{
	struct timeval ta, tb;
	int usec = 1, i, j, total;

	for (usec = 10; usec <= 10000; usec *= 10) {
		total = 0;
		for (j = 0; j < 20; j++) {
			for (i = 0; i < 20; i++)
				usleep(usec);
			gettimeofday(&ta, NULL);
			usleep(10);
			gettimeofday(&tb, NULL);
			timersub(&tb, &ta, &tb);
			total += tb.tv_sec * 1000000 + tb.tv_usec;
		}
		fprintf(stdout, "%d %d \n", usec, total / 20 - 10);
	}
	return 0;
}