viola 0.3.8

中提琴

中文

viola是一个wsgi服务器。轻量级且高效，除了python标准库之外没有其他依赖项。通常与nginx一起使用。我用viola构建blog，用nginx处理静态资源，用viola处理动态内容。你也可以这样做或使用viola作为学习网络编程的参考。

目录：

• Features
• Requirements
• Installation
• Example
• Performance
• TODO
• Reference
• License
• Contributing

功能

• [X]基于事件驱动模型的单线程、非阻塞I/O
• [X]简化了服务器端的wsgi协议
• [X]第二定时器
• [X]http get方法的解析器

要求

• Python
  • cpython=3.6
• 平台
  • Linux和内核>；=2.6

安装

包上载于PyPI

您可以使用pip安装：

$ pip install viola

示例

使用中提琴如下：

fromviola.core.event_loopimportEventLoopfromviola.wsgi.serverimportWSGIServerfromviola.core.schedulerimportScheduler# Import your APP in hereif__name__=='__main__':event_loop=EventLoop.instance(Scheduler.instance())server=WSGIServer(event_loop)server.set_wsgi_app(APP)# For example the APP argument is flask or bottleserver.bind(host=HOST,port=PORT)# Replace your real host and real portserver.listen()server.start(1)event_loop.start()

就这些。

性能

以下nginx是一个wsgi服务器的代理。nginx配置是一致的，wsgi服务器响应一个字符串“hello world”。

CPU: 2.7 GHz Intel Core i5
MEM: 8 GB 1867 MHz DDR3

ab -n 10000 -c 500 http://10.211.55.25/

nginx+tornado（tornado同时作为wsgi服务器和web框架）。龙卷风开始一个过程）

$ ab -n 10000 -c 500 http://10.211.55.25/
This is ApacheBench, Version 2.3 <$Revision: 1528965 $>
Copyright 1996 Adam Twiss, Zeus Technology Ltd, http://www.zeustech.net/
Licensed to The Apache Software Foundation, http://www.apache.org/

Benchmarking 10.211.55.25 (be patient)
Completed 1000 requests
Completed 2000 requests
Completed 3000 requests
Completed 4000 requests
Completed 5000 requests
Completed 6000 requests
Completed 7000 requests
Completed 8000 requests
Completed 9000 requests
Completed 10000 requests
Finished 10000 requests


Server Software:        nginx/1.15.8
Server Hostname:        10.211.55.25
Server Port:            80

Document Path:          /
Document Length:        12 bytes

Concurrency Level:      500
Time taken for tests:   31.186 seconds
Complete requests:      10000
Failed requests:        0
Total transferred:      2190000 bytes
HTML transferred:       120000 bytes
Requests per second:    320.65 [#/sec] (mean)
Time per request:       1559.316 [ms] (mean)
Time per request:       3.119 [ms] (mean, across all concurrent requests)
Transfer rate:          68.58 [Kbytes/sec] received

Connection Times (ms)
              min  mean[+/-sd] median   max
Connect:        0    1   3.3      0      20
Processing:    13  797 3684.3    121   31161
Waiting:        9  797 3684.3    121   31161
Total:         28  798 3686.2    122   31170

Percentage of the requests served within a certain time (ms)
  50%    122
  66%    132
  75%    141
  80%    149
  90%    168
  95%   1002
  98%  15038
  99%  15135
 100%  31170 (longest request)

nginx+gunicorn（工人4，默认使用同步模式）+瓶子

$ ab -n 10000 -c 500 http://10.211.55.25/
This is ApacheBench, Version 2.3 <$Revision: 1528965 $>
Copyright 1996 Adam Twiss, Zeus Technology Ltd, http://www.zeustech.net/
Licensed to The Apache Software Foundation, http://www.apache.org/

Benchmarking 10.211.55.25 (be patient)
Completed 1000 requests
Completed 2000 requests
Completed 3000 requests
Completed 4000 requests
Completed 5000 requests
Completed 6000 requests
Completed 7000 requests
Completed 8000 requests
Completed 9000 requests
Completed 10000 requests
Finished 10000 requests


Server Software:        nginx/1.15.8
Server Hostname:        10.211.55.25
Server Port:            80

Document Path:          /
Document Length:        12 bytes

Concurrency Level:      500
Time taken for tests:   15.113 seconds
Complete requests:      10000
Failed requests:        0
Total transferred:      1690000 bytes
HTML transferred:       120000 bytes
Requests per second:    661.67 [#/sec] (mean)
Time per request:       755.662 [ms] (mean)
Time per request:       1.511 [ms] (mean, across all concurrent requests)
Transfer rate:          109.20 [Kbytes/sec] received

Connection Times (ms)
              min  mean[+/-sd] median   max
Connect:        0    1   3.0      0      21
Processing:    13  407 1826.5     57   15085
Waiting:       13  407 1826.5     57   15085
Total:         30  408 1827.8     57   15091

Percentage of the requests served within a certain time (ms)
  50%     57
  66%     62
  75%     81
  80%     91
  90%    120
  95%   1063
  98%   7065
  99%  15056
 100%  15091 (longest request)

nginx+viola（viola开始一个过程）+瓶子

$ ab -n 10000 -c 500 http://10.211.55.25/
This is ApacheBench, Version 2.3 <$Revision: 1528965 $>
Copyright 1996 Adam Twiss, Zeus Technology Ltd, http://www.zeustech.net/
Licensed to The Apache Software Foundation, http://www.apache.org/

Benchmarking 10.211.55.25 (be patient)
Completed 1000 requests
Completed 2000 requests
Completed 3000 requests
Completed 4000 requests
Completed 5000 requests
Completed 6000 requests
Completed 7000 requests
Completed 8000 requests
Completed 9000 requests
Completed 10000 requests
Finished 10000 requests


Server Software:        nginx/1.15.8
Server Hostname:        10.211.55.25
Server Port:            80

Document Path:          /
Document Length:        12 bytes

Concurrency Level:      500
Time taken for tests:   3.090 seconds
Complete requests:      10000
Failed requests:        0
Total transferred:      1290000 bytes
HTML transferred:       120000 bytes
Requests per second:    3236.64 [#/sec] (mean)
Time per request:       154.481 [ms] (mean)
Time per request:       0.309 [ms] (mean, across all concurrent requests)
Transfer rate:          407.74 [Kbytes/sec] received

Connection Times (ms)
              min  mean[+/-sd] median   max
Connect:        0    1   3.0      0      22
Processing:     1  133 532.0     23    3042
Waiting:        1  133 532.0     23    3042
Total:          9  134 533.3     24    3053

Percentage of the requests served within a certain time (ms)
  50%     24
  66%     28
  75%     35
  80%     39
  90%     50
  95%     67
  98%   3016
  99%   3037
 100%   3053 (longest request)

待办事项

• []改进了服务器端的wsgi协议
• []毫秒计时器
• []http post方法等
• []改进的响应模块
• []为更多平台提供事件驱动
• []提高覆盖率

参考

• EPOLL(7)
• How To Use Linux epoll with Python
• Python Standard Library
• An overview of HTTP
• RFC 2616 -- HTTP GET method
• PEP 333
• Tornado
• Gunicorn

许可证

维奥拉是根据麻省理工学院的执照被释放的。有关详细信息，请参见LICENSE。

贡献

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标签：

• 服务器
• http
• wsgi
• server
• nginx
• mean
• requests
• ms
• completed

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