#include <u.h>
#include <libc.h>

char *argv[] = {"nop", 0};

void
main(void)
{
	int i, n;
	uvlong t0, t1;

	n = 10000;
	t0 = nsec();
	for(i = 0; i < n; i++)
		switch(fork()){
		case 0:
			exec(*argv, argv);
			_exits("exec");
		case -1:
			sysfatal("fork");
		default:
			free(wait());
		}
	t1 = nsec();
	print("%g\n", 1.*(t1 - t0)/(1.*n));
	exits("");
}