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| author | David Young <dyoung@hdfgroup.org> | 2020-01-30 21:46:12 (GMT) |
|---|---|---|
| committer | David Young <dyoung@hdfgroup.org> | 2020-05-20 14:31:54 (GMT) |
| commit | 17f8b2913b81f0ba504d6cde0c6733b160bb11db (patch) | |
| tree | 8c3f9d437f725a54e4a3cc0dc65d82b27f5f53c1 /test/dtypes.c | |
| parent | 66334f899d19edc01cf83bebbc6dcec914b3dfa3 (diff) | |
| download | hdf5-17f8b2913b81f0ba504d6cde0c6733b160bb11db.zip hdf5-17f8b2913b81f0ba504d6cde0c6733b160bb11db.tar.gz hdf5-17f8b2913b81f0ba504d6cde0c6733b160bb11db.tar.bz2 | |
Increase iterations, provide a baseline for no-op, simplify the overhead
case a bit.
Diffstat (limited to 'test/dtypes.c')
| -rw-r--r-- | test/dtypes.c | 14 |
1 files changed, 10 insertions, 4 deletions
diff --git a/test/dtypes.c b/test/dtypes.c index 25a3088..6e3c070 100644 --- a/test/dtypes.c +++ b/test/dtypes.c @@ -7819,7 +7819,7 @@ herr_t no_operation(H5T_t *t, int mode); herr_t H5T__forward_args_with_func_overhead(H5T_t *t); herr_t H5T__forward_args_without_func_overhead(H5T_t *t); -herr_t +herr_t __attribute__((noinline)) H5T__forward_args_with_func_overhead(H5T_t *t) { herr_t ret_value = FAIL; @@ -7829,12 +7829,11 @@ H5T__forward_args_with_func_overhead(H5T_t *t) if ((ret_value = no_operation(t, 10)) == FAIL) HGOTO_ERROR(17, 31, FAIL, "that didn't work"); - ret_value = SUCCEED; done: FUNC_LEAVE_NOAPI(ret_value) } -herr_t +herr_t __attribute__((noinline)) H5T__forward_args_without_func_overhead(H5T_t *t) { return no_operation(t, 10); @@ -7862,7 +7861,7 @@ main(void) long nerrors = 0; hid_t fapl = -1; H5T_t *t; - int i, ntimes = 10 * 1000 * 1000; + int i, ntimes = 100 * 1000 * 1000; uint64_t start, stop; /* Set the random # seed */ @@ -7879,6 +7878,13 @@ main(void) start = __builtin_ia32_rdtsc(); for (i = 0; i < ntimes; i++) + no_operation(t, 10); + stop = __builtin_ia32_rdtsc(); + printf("%d calls to no-op routine, %" PRIu64 " cycles\n", + ntimes, stop - start); + + start = __builtin_ia32_rdtsc(); + for (i = 0; i < ntimes; i++) H5T__forward_args_without_func_overhead(t); stop = __builtin_ia32_rdtsc(); printf("%d calls to no-overhead version, %" PRIu64 " cycles\n", |