#include <stdio.h>
#include <sys/time.h>

unsigned long elapsed(int start) {

	static struct timeval s,e;

	if (start) return gettimeofday(&s, NULL);

	gettimeofday(&e, NULL);

	return ((e.tv_sec - s.tv_sec) * 1000 + (e.tv_usec - s.tv_usec) / 1000);

}

int main(int argc, char **argv) {

    unsigned long int i,j,max;
    unsigned char *p;

    if (argc>1)
	max=atol(argv[1]);
    else
	max=0x60000;


    elapsed(1); 

    for (i=0;((i<max/1024) && (p = (char *)malloc(1024*1024)));i++) {
        for (j=0;j<1024;p[1024*j++]=0);
	fprintf(stderr,"\r%d MB ",i+1);
    }

    for (j=max-(i*=1024);((i<max) && (p = (char *)malloc(1024)));i++) {
	*p = 0;
    }
    fprintf(stderr,"%d KB ",j-(max-i));

    fprintf(stderr,"eaten in %lu msec (%lu MB/s)\n",elapsed(0),i/(elapsed(0)?:1)*1000/1024);

    return 0;
}