Reduce redundant object creation while calling callback function from gc #104028
Description
Lines 1391 to 1402 in 4b27972
The phase object can be created earlier with one-time creation and it can be replaced with vectorcall either.
From my microbenchmark, there is 4-5% performance improvement by doing this.
microbenchmark
import pyperf
import gc
def benchamark_collection(loops):
def callback_foo(phase, info):
pass
for _ in range(100):
gc.callbacks.append(callback_foo)
total_time = 0
for _ in range(loops):
t0 = pyperf.perf_counter()
collected = gc.collect()
total_time += pyperf.perf_counter() - t0
return total_time
if __name__ == "__main__":
runner = pyperf.Runner()
runner.metadata["description"] = "GC callback benchmark"
runner.bench_time_func("create_gc_cycles", benchamark_collection)