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profiler: Use rdtsc instead of QPC. 

Runs much faster and we don't really need accurate ns readings.

Signed-off-by: Hans-Kristian Arntzen <post@arntzen-software.no>
This commit is contained in:
Hans-Kristian Arntzen 2022-07-06 11:36:11 +02:00
parent 8da6ca6772
commit 8d780458f1
2 changed files with 5 additions and 12 deletions
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11
include/private/vkd3d_profiling.h
View File

@ -25,13 +25,6 @@
#ifdef VKD3D_ENABLE_PROFILING
#ifdef _WIN32
#define WIN32_LEAN_AND_MEAN
#include <windows.h>
#else
#include <time.h>
#endif
void vkd3d_init_profiling(void);
bool vkd3d_uses_profiling(void);
unsigned int vkd3d_profiling_register_region(const char *name, spinlock_t *lock, uint32_t *latch);
@ -48,12 +41,12 @@ void vkd3d_profiling_notify_work(unsigned int index, uint64_t start_ticks, uint6
do { \
if (!(_vkd3d_region_index_##name = vkd3d_atomic_uint32_load_explicit(&_vkd3d_region_latch_##name, vkd3d_memory_order_acquire))) \
_vkd3d_region_index_##name = vkd3d_profiling_register_region(#name, &_vkd3d_region_lock_##name, &_vkd3d_region_latch_##name); \
_vkd3d_region_begin_tick_##name = vkd3d_get_current_time_ns(); \
_vkd3d_region_begin_tick_##name = vkd3d_get_current_time_ticks(); \
} while(0)
#define VKD3D_REGION_END_ITERATIONS(name, iter) \
do { \
_vkd3d_region_end_tick_##name = vkd3d_get_current_time_ns(); \
_vkd3d_region_end_tick_##name = vkd3d_get_current_time_ticks(); \
vkd3d_profiling_notify_work(_vkd3d_region_index_##name, _vkd3d_region_begin_tick_##name, _vkd3d_region_end_tick_##name, iter); \
} while(0)

6
programs/vkd3d-profile.py
View File

@ -114,11 +114,11 @@ def main():
print(' Iterations:', block.iterations)
if args.divider is not None:
print(' Time spent per iteration of {}: {:.3f}'.format(args.divider, block.ticks / 1000.0), "us")
print(' Time spent per iteration of {}: {:.3f}'.format(args.divider, block.ticks / 1000.0), "Kcycles")
elif args.per_iteration:
print(' Time spent per iteration: {:.3f}'.format(block.ticks / 1000.0), "us")
print(' Time spent per iteration: {:.3f}'.format(block.ticks / 1000.0), "Kcycles")
else:
print(' Total time spent: {:.3f}'.format(block.ticks / 1000.0), "us")
print(' Total time spent: {:.3f}'.format(block.ticks / 1000.0), "Kcycles")
if __name__ == '__main__':
main()