Tornado PyPy vs CPython benchmark

README.md

Tornado: pypy vs CPython benchmark

Test box

Centos 7, Tornado 2.2.1

CPython case:

Python 2.7.5

PyPy case:

PyPy 2.2.1

Note:

During this test CPython-driven tornado had connection drops:

apr_socket_recv: Connection reset by peer (104)

server.py

import tornado.ioloop
import tornado.web

class MainHandler(tornado.web.RequestHandler):
    def get(self):
        self.write("Hello, world")

application = tornado.web.Application([
    (r"/", MainHandler),
])

if __name__ == "__main__":
    application.listen(8888)
    tornado.ioloop.IOLoop.instance().start()

Tornado+CPython

Server Software:        TornadoServer/2.2.1
Server Hostname:        localhost
Server Port:            8888

Document Path:          /
Document Length:        12 bytes

Concurrency Level:      1000
Time taken for tests:   11.765 seconds
Complete requests:      50000
Failed requests:        0
Write errors:           0
Total transferred:      8500000 bytes
HTML transferred:       600000 bytes
Requests per second:    4249.85 [#/sec] (mean)
Time per request:       235.302 [ms] (mean)
Time per request:       0.235 [ms] (mean, across all concurrent requests)
Transfer rate:          705.54 [Kbytes/sec] received

Connection Times (ms)
              min  mean[+/-sd] median   max
Connect:        0  151 661.6      0    7019
Processing:     4   35  38.1     30    1858
Waiting:        4   35  38.1     30    1858
Total:          9  186 670.1     30    7879

Percentage of the requests served within a certain time (ms)
  50%     30
  66%     34
  75%     36
  80%     38
  90%    101
  95%   1037
  98%   1255
  99%   3041
 100%   7879 (longest request)

Tornado+pypy

Server Software:        TornadoServer/2.2.1
Server Hostname:        localhost
Server Port:            8888

Document Path:          /
Document Length:        12 bytes

Concurrency Level:      1000
Time taken for tests:   4.810 seconds
Complete requests:      50000
Failed requests:        0
Write errors:           0
Total transferred:      8500000 bytes
HTML transferred:       600000 bytes
Requests per second:    10395.52 [#/sec] (mean)
Time per request:       96.195 [ms] (mean)
Time per request:       0.096 [ms] (mean, across all concurrent requests)
Transfer rate:          1725.82 [Kbytes/sec] received

Connection Times (ms)
              min  mean[+/-sd] median   max
Connect:        0   62 324.1      0    3009
Processing:     4   19  67.5      8    1705
Waiting:        4   19  67.5      8    1705
Total:          5   80 356.7      9    3841

Percentage of the requests served within a certain time (ms)
  50%      9
  66%     10
  75%     13
  80%     16
  90%     39
  95%    122
  98%   1034
  99%   1861
 100%   3841 (longest request)