Created
October 27, 2021 11:31
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Script for measuring the overhead of asyncio.gather
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import asyncio | |
import time | |
async def no_op(): | |
return | |
async def main_gather(count): | |
await asyncio.gather(*(asyncio.gather(no_op()) for _ in range(count))) | |
async def main_plain(count): | |
await asyncio.gather(*(no_op() for _ in range(count))) | |
print("Repetitions") | |
print(" | gather time vs plain time") | |
print(" | | gather overhead") | |
for i in range(10, 501, 10): | |
start_plain = time.time() | |
asyncio.run(main_plain(i)) | |
stop_plain = time.time() | |
start_gather = time.time() | |
asyncio.run(main_gather(i)) | |
stop_gather = time.time() | |
delta = (stop_gather-start_gather) - (stop_plain-start_plain) | |
print( | |
f"{i:3d}: {stop_gather-start_gather:.3f} vs {stop_plain-start_plain:.3f}", | |
f"[{100 + delta / (stop_plain-start_plain) * 100:3.0f}% of noop]" | |
) |
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