4 * $DragonFly: src/test/sysperf/memzero.c,v 1.1 2004/04/29 16:14:53 dillon Exp $
11 void test_using(const char *ctl, char *buf, int bytes, void (*zerof)(void *d, size_t bytes));
13 extern void dozero1(void *d, size_t bytes);
14 extern void dozero2(void *d, size_t bytes);
15 extern void dozero3(void *d, size_t bytes);
16 extern void dozero4(void *d, size_t bytes);
17 extern void dozero5(void *d, size_t bytes);
18 extern void dozero6(void *d, size_t bytes);
19 extern void dozero7(void *d, size_t bytes);
20 extern void fpcleanup(void);
23 main(int ac, char **av)
30 fprintf(stderr, "%s bytes\n", av[0]);
34 bytes = strtol(av[1], &ptr, 0);
46 bytes *= 1024 * 1024 * 1024;
51 fprintf(stderr, "suffix '%s' not understood\n");
54 if (bytes <= 0 && (bytes & 127)) {
55 fprintf(stderr, "# of bytes must be a multiple of 128\n");
59 buf = mmap(NULL, bytes * 2, PROT_READ|PROT_WRITE, MAP_SHARED|MAP_ANON, -1, 0);
60 if (buf == MAP_FAILED) {
61 perror("mmap/buffer");
64 bzero(buf, bytes * 2);
66 test_using("bzero", buf, bytes, (void *)bzero);
67 test_using("dozero1", buf, bytes, dozero1);
68 test_using("dozero2", buf, bytes, dozero2);
69 test_using("dozero3", buf, bytes, dozero3);
70 test_using("dozero4", buf, bytes, dozero4);
71 test_using("dozero5", buf, bytes, dozero5);
72 test_using("dozero6", buf, bytes, dozero6);
73 test_using("dozero7", buf, bytes, dozero7);
78 test_using(const char *ctl, char *buf, int bytes, void (*zerof)(void *d, size_t bytes))
85 for (i = 0; (i & 31) || stop_timing(0, NULL) == 0; ++i) {
91 for (i = loops - 1; i >= 0; --i) {
95 stop_timing(loops, ctl);
97 printf("%s %d %5.2f MBytes/sec\n", ctl, bytes,
98 (double)loops * (double)bytes / (double)us);