Performance degenerates on async routes.

[IterableTrucks]

The performance of mrhttp drops significantly on serving asynchronous routes.

import mrhttp

app = mrhttp.Application()


@app.route('/sync_plaintext', _type="text")
def sync_hello(r):
    return "Hello, world!"


@app.route('/async_plaintext', _type="text")
async def async_hello(r):
    return "Hello, world!"

app.run()

I tested on a laptop with a Ryzen 7640HS CPU and the performance gap between synchronous and asynchronous routes is huge:

wrk -t12 -c10000 -d30s --latency http://127.0.0.1:8080/async_plaintext
Running 30s test @ http://127.0.0.1:8080/async_plaintext
  12 threads and 10000 connections
  Thread Stats   Avg      Stdev     Max   +/- Stdev
    Latency     9.48ms    5.10ms 575.36ms   92.60%
    Req/Sec     9.40k     5.31k   23.70k    62.11%
  Latency Distribution
     50%    8.47ms
     75%   10.24ms
     90%   13.25ms
     99%   18.56ms
  3088248 requests in 30.04s, 421.16MB read
  Socket errors: connect 8987, read 205, write 0, timeout 18
Requests/sec: 102793.36
Transfer/sec:     14.02MB

wrk -t12 -c10000 -d30s --latency http://127.0.0.1:8080/sync_plaintext
Running 30s test @ http://127.0.0.1:8080/sync_plaintext
  12 threads and 10000 connections
  Thread Stats   Avg      Stdev     Max   +/- Stdev
    Latency     6.37ms    6.27ms 760.65ms   99.95%
    Req/Sec    15.65k     7.68k   35.71k    59.63%
  Latency Distribution
     50%    6.36ms
     75%    6.43ms
     90%    6.66ms
     99%    7.35ms
  4670974 requests in 30.05s, 637.01MB read
  Socket errors: connect 8987, read 3293, write 0, timeout 35
Requests/sec: 155460.83
Transfer/sec:     21.20MB