asyncio scheduler contention

contention.py

import asyncio
import time


async def badguy():
    # await asyncio.sleep(0.001)  # 1ms
    time.sleep(0.499)  # 499ms


async def goodguy():
    start = time.perf_counter()
    await asyncio.sleep(0.01)  # 10ms
    elapsed = time.perf_counter() - start
    print(f"goodguy took {elapsed}")


async def main():
    await asyncio.gather(badguy(), goodguy())
    await asyncio.gather(goodguy(), badguy())


asyncio.run(main())