import asyncio
import time


async def coro():
    await asyncio.sleep(0)

async def main(loop, coros):
    start = loop.time()
    for i in range(coros):
        await coro()
    dt = loop.time() - start
    print("Coros per second: {}, load: {}".format(coros/dt, loop.load()))

loop = asyncio.get_event_loop()
loop.run_until_complete(main(loop, 400000))