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Enhancements on wasm function execution time statistic (#2985)

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Enhance the statistic of wasm function execution time, or the performance
profiling feature:
- Add os_time_thread_cputime_us() to get the cputime of a thread,
  and use it to calculate the execution time of a wasm function
- Support the statistic of the children execution time of a function,
  and dump it in wasm_runtime_dump_perf_profiling
- Expose two APIs:
  wasm_runtime_sum_wasm_exec_time
  wasm_runtime_get_wasm_func_exec_time

And rename os_time_get_boot_microsecond to os_time_get_boot_us.
This commit is contained in:
liang.he
2024-01-17 09:51:54 +08:00
committed by GitHub
parent 25ccc9f2d5
commit 5c8b8a17a6
24 changed files with 336 additions and 86 deletions
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60
core/iwasm/aot/aot_runtime.c
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@ -2807,7 +2807,7 @@ aot_alloc_frame(WASMExecEnv *exec_env, uint32 func_index)
}
#if WASM_ENABLE_PERF_PROFILING != 0
frame->time_started = os_time_get_boot_microsecond();
frame->time_started = os_time_thread_cputime_us();
frame->func_perf_prof_info = func_perf_prof;
#endif
@ -2826,8 +2826,13 @@ aot_free_frame(WASMExecEnv *exec_env)
#if WASM_ENABLE_PERF_PROFILING != 0
cur_frame->func_perf_prof_info->total_exec_time +=
os_time_get_boot_microsecond() - cur_frame->time_started;
os_time_thread_cputime_us() - cur_frame->time_started;
cur_frame->func_perf_prof_info->total_exec_cnt++;
/* parent function */
if (prev_frame)
prev_frame->func_perf_prof_info->children_exec_time =
cur_frame->func_perf_prof_info->total_exec_time;
#endif
wasm_exec_env_free_wasm_frame(exec_env, cur_frame);
@ -2964,22 +2969,65 @@ aot_dump_perf_profiling(const AOTModuleInstance *module_inst)
os_printf("Performance profiler data:\n");
for (i = 0; i < total_func_count; i++, perf_prof++) {
if (perf_prof->total_exec_cnt == 0)
continue;
func_name = get_func_name_from_index(module_inst, i);
if (func_name)
os_printf(
" func %s, execution time: %.3f ms, execution count: %" PRIu32
" times\n",
" times, children execution time: %.3f ms\n",
func_name, perf_prof->total_exec_time / 1000.0f,
perf_prof->total_exec_cnt);
perf_prof->total_exec_cnt,
perf_prof->children_exec_time / 1000.0f);
else
os_printf(" func %" PRIu32
", execution time: %.3f ms, execution count: %" PRIu32
" times\n",
" times, children execution time: %.3f ms\n",
i, perf_prof->total_exec_time / 1000.0f,
perf_prof->total_exec_cnt);
perf_prof->total_exec_cnt,
perf_prof->children_exec_time / 1000.0f);
}
}
double
aot_summarize_wasm_execute_time(const AOTModuleInstance *inst)
{
double ret = 0;
AOTModule *module = (AOTModule *)inst->module;
uint32 total_func_count = module->import_func_count + module->func_count, i;
for (i = 0; i < total_func_count; i++) {
AOTFuncPerfProfInfo *perf_prof =
(AOTFuncPerfProfInfo *)inst->func_perf_profilings + i;
ret += (perf_prof->total_exec_time - perf_prof->children_exec_time)
/ 1000.0f;
}
return ret;
}
double
aot_get_wasm_func_exec_time(const AOTModuleInstance *inst,
const char *func_name)
{
AOTModule *module = (AOTModule *)inst->module;
uint32 total_func_count = module->import_func_count + module->func_count, i;
for (i = 0; i < total_func_count; i++) {
const char *name_in_wasm = get_func_name_from_index(inst, i);
if (name_in_wasm && strcmp(func_name, name_in_wasm) == 0) {
AOTFuncPerfProfInfo *perf_prof =
(AOTFuncPerfProfInfo *)inst->func_perf_profilings + i;
return (perf_prof->total_exec_time - perf_prof->children_exec_time)
/ 1000.0f;
}
}
return -1.0;
}
#endif /* end of WASM_ENABLE_PERF_PROFILING */
#if WASM_ENABLE_STATIC_PGO != 0