4 * Simple benchmarking library
6 * $DragonFly: src/test/sysperf/blib.c,v 1.1 2003/08/12 02:29:44 dillon Exp $
15 static struct timeval tv1;
16 static struct timeval tv2;
21 gettimeofday(&tv1, NULL);
25 stop_timing(long long count, const char *ctl, ...)
30 gettimeofday(&tv2, NULL);
31 us = (tv2.tv_usec - tv1.tv_usec) + (tv2.tv_sec - tv1.tv_sec) * 1000000LL;
32 if (ctl == NULL) /* dummy call to pre-cache */
39 printf("%6.3fs %lld loops = %6.3fuS/loop\n",
40 (double)us / 1000000.0,
42 (double)us / (double)count
52 gettimeofday(&tv2, NULL);
53 us = (tv2.tv_usec - tv1.tv_usec) + (tv2.tv_sec - tv1.tv_sec) * 1000000LL;