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)