Why hasura has low performance with aiohttp?

Question

I use Hasura as graphql server as docker container. Also I use aiohttp to request hasura from another docker container and get a very slow RPS and actually hasura query execution time is big also.

But when I made a stress test hasura using locust I got a pretty good performance.

Now I'm a little confused, why there is so big differense in performance?

async def execute_query(session, N):
    query = """
    query my_query {...
         }
    """
    async with session.post('http://hasura:8080/v1/graphql/', json=payload, ssl=False) as resp:
        data = await resp.json()
        if not data.get('data'):
            print(f"No data {data}")
        return data


async def send_requests(N: int):
    async with aiohttp.ClientSession(
        connector=aiohttp.TCPConnector(limit=90000),
        headers={'x-hasura-admin-secret': 'my-admin-secret'},
    ) as session:
        return await asyncio.gather(*[
            execute_query(session, N) for i in range(N)
        ])


def test_rpc(N):
    start_timestamp = time.time()

    asyncio.run(send_requests(N))

    task_time = round(time.time() - start_timestamp, 2)
    rps = round(N / task_time, 1)
    print(
        f"Requests: {N}; Total time: {task_time} s; RPS: {rps}."
    )


if __name__ == '__main__':
    test_rpc(100)
    test_rpc(500)
    test_rpc(1000)
    test_rpc(2000)
    test_rpc(5000)

Using aiohttp:

Using locust: