gunicorn vs uwsgi 性能对比，以flask run为基准

2019年9月6日 5814点热度 6人点赞 2条评论

之前一直在用gunicorn，这次折腾新项目突发奇想来对比下flask run \gunicorn\uwsgi的性能。不是非常严谨的测试，希望也能有一定的参考意义，结果也很有意思。

gunicorn很火，uwsgi以前用的人多，但是现在少了感觉不怎么听到，这东西是用c写的，带了光环的。flask run这里只是作为基准参考，压力测试工具为ab test,前置了nginx把静态文件剥离了，两者都使用unix domain socket通信隔离了http微乎其微的影响，两者都是用了2process+2thread，压力为100-1000。下面是三种方式的结果：

#基准flask run 100-1000
Server Software:        nginx
Server Hostname:        xxx
Server Port:            443
SSL/TLS Protocol:       TLSv1.2,ECDHE-RSA-AES256-GCM-SHA384,2048,256
Document Path:          /
Document Length:        6223 bytes
Concurrency Level:      100
Time taken for tests:   7.418 seconds
Complete requests:      1000
Failed requests:        0
Total transferred:      6489000 bytes
HTML transferred:       6223000 bytes
Requests per second:    134.81 [#/sec] (mean)
Time per request:       741.790 [ms] (mean)
Time per request:       7.418 [ms] (mean, across all concurrent requests)
Transfer rate:          854.27 [Kbytes/sec] received
Connection Times (ms)
              min  mean[+/-sd] median   max
Connect:        5   47  69.2      6     296
Processing:   231  662 186.7    679    1736
Waiting:      231  662 186.7    679    1736
Total:        241  709 159.6    702    1742
Percentage of the requests served within a certain time (ms)
  50%    702
  66%    735
  75%    788
  80%    821
  90%    881
  95%    958
  98%   1111
  99%   1178
 100%   1742 (longest request)

# uwsgi result
Server Software:        nginx
Server Hostname:        erp.ljmold.cn
Server Port:            443
SSL/TLS Protocol:       TLSv1.2,ECDHE-RSA-AES256-GCM-SHA384,2048,256
Document Path:          /user/login
Document Length:        6223 bytes
Concurrency Level:      100
Time taken for tests:   9.741 seconds
Complete requests:      1000
Failed requests:        0
Total transferred:      6489000 bytes
HTML transferred:       6223000 bytes
Requests per second:    102.66 [#/sec] (mean)
Time per request:       974.096 [ms] (mean)
Time per request:       9.741 [ms] (mean, across all concurrent requests)
Transfer rate:          650.54 [Kbytes/sec] received
Connection Times (ms)
              min  mean[+/-sd] median   max
Connect:        5  130 246.7      9    1750
Processing:     4  533 732.3    437    7584
Waiting:        4  533 732.3    437    7584
Total:          9  664 765.4    473    7742
Percentage of the requests served within a certain time (ms)
  50%    473
  66%    656
  75%    751
  80%    858
  90%   1272
  95%   1719
  98%   2526
  99%   4081
 100%   7742 (longest request)


#gunicorn 100-1000
 Server Software:        nginx
Server Hostname:        erp.ljmold.cn
Server Port:            443
SSL/TLS Protocol:       TLSv1.2,ECDHE-RSA-AES256-GCM-SHA384,2048,256

Document Path:          /user/login
Document Length:        6223 bytes

Concurrency Level:      100
Time taken for tests:   9.678 seconds
Complete requests:      1000
Failed requests:        0
Total transferred:      6489000 bytes
HTML transferred:       6223000 bytes
Requests per second:    103.33 [#/sec] (mean)
Time per request:       967.779 [ms] (mean)
Time per request:       9.678 [ms] (mean, across all concurrent requests)
Transfer rate:          654.79 [Kbytes/sec] received

Connection Times (ms)
              min  mean[+/-sd] median   max
Connect:        4   82 233.2      6    2275
Processing:     4  584 891.2    306    7272
Waiting:        4  584 891.4    303    7272
Total:         10  667 907.5    389    7278

Percentage of the requests served within a certain time (ms)
  50%    389
  66%    573
  75%    682
  80%    868
  90%   1487
  95%   2506
  98%   3374
  99%   4788
 100%   7278 (longest request)

总共耗时上差的微乎其微，这点差别不能说明什么；
两者都完成了所有请求，这里说一下，之所以选1000就是因为2000两种方式都会崩溃；
平均时间uwsgi胜出，这里差别不明显，但是也说明总体性能上uwsgi做的彻底；
连接时间上，两者明显在1000下都吃力了，但是uwsgi表现更好，除了c我觉得使用uwsgi自己的协议也有关系；
最后也是最重要的，在高并发下，明显uwsgi的表现更好一点，很有意思的是在80%以下的正常流量范围内反倒gunicorn更好，而且效果显著，100ms还是比较可观的，我想这才是大家都用gunicorn的主要原因吧。

最后别人说的总归是片面，还是自己动手对性能有更全面的了解。顺便说一下对flask自带的小服务器刮目相看

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