Web Server程序编写学习笔记(五)性能测试

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#server #web #benchmarking #freebsd #concurrency #http服务器

本文使用Apache自带的HTTP服务器性能测试工具ab，在局域网环境下，对服务器程序分别在FreeBSD 4.7和Windows XP（Cygwin）下的运行情况进行测试。给出了不同环境下的测试数据，包括请求数、并发级别、响应时间等，以对比服务器在不同系统中的性能表现。

        使用apache自带的HTTP服务器性能测试工具ab对上述程序在FreeBSD和windows（Cygwin）下的运行情况进行测试。
        网路条件：局域网，192.168.1.7分别在FreeBSD和windows（Cygwin）下运行服务器程序，192.168.1.27运行ab测试程序对服务器程序进行测试；
        机器硬件条件：Intel (R) Celeron CPU 2.40GHz；256DDR，Maxtor 80G。
        1. FreeBSD 4.7环境：
/*****************************************************/
C:/>ab -n 1000 -c 50 192.168.1.7/124
This is ApacheBench, Version 2.0.41-dev <$Revision: 1.121.2.12 $> apache-2.0
Copyright (c) 1996 Adam Twiss, Zeus Technology Ltd, http://www.zeustech.net/
Copyright (c) 1998-2002 The Apache Software Foundation, http://www.apache.org/

Benchmarking 192.168.1.7 (be patient)

Server Software:        mypngserver
Server Hostname:        192.168.1.7
Server Port:            80

Document Path: /124
Document Length: 188 bytes

Concurrency Level:      50
Time taken for tests:   77.831917 seconds
Complete requests:      1000
Failed requests:        0
Write errors:           0
Total transferred:      346000 bytes
HTML transferred:       188000 bytes
Requests per second:    12.85 [#/sec] (mean)
Time per request:       3891.596 [ms] (mean)
Time per request:       77.832 [ms] (mean, across all concurrent requests)
Transfer rate:          4.33 [Kbytes/sec] received

Connection Times (ms)
              min mean[+/-sd] median   max
Connect:        0   77 41.7    100     100
Processing:    10 3718 481.4   3805    3905
Waiting:        0 1997 1104.4   2002    3905
Total:        110 3796 481.8   3905    3905

Percentage of the requests served within a certain time (ms)
50%   3905
66%   3905
75%   3905
80%   3905
90%   3905
95%   3905
98%   3905
99%   3905
100%   3905 (longest request)
/*************************************************************/

        2. Windows XP (Cygwin)环境：
/*****************************************************/
C:/>ab -n 1000 -c 50 192.168.1.7/qwe
This is ApacheBench, Version 2.0.41-dev <$Revision: 1.121.2.12 $> apache-2.0
Copyright (c) 1996 Adam Twiss, Zeus Technology Ltd, http://www.zeustech.net/
Copyright (c) 1998-2002 The Apache Software Foundation, http://www.apache.org/

Benchmarking 192.168.1.7 (be patient)

Server Software:        mypngserver
Server Hostname:        192.168.1.7
Server Port:            80

Document Path: /qwe
Document Length: 193 bytes

Concurrency Level:      50
Time taken for tests:   719.454525 seconds
Complete requests:      1000
Failed requests:        0
Write errors:           0
Total transferred:      351000 bytes
HTML transferred:       193000 bytes
Requests per second:    1.39 [#/sec] (mean)
Time per request:       35972.726 [ms] (mean)
Time per request:       719.455 [ms] (mean, across all concurrent requests)
Transfer rate:          0.48 [Kbytes/sec] received

Connection Times (ms)
              min mean[+/-sd] median   max
Connect:        0 712 311.2    520    1191
Processing: 4326 34387 4359.4 35221   36192
Waiting:     3815 20803 9140.2 20769   36111
Total:       5127 35099 4359.4 36111   36933

Percentage of the requests served within a certain time (ms)
50% 36111
66% 36212
75% 36312
80% 36392
90% 36612
95% 36712
98% 36812
99% 36822
100% 36933 (longest request)
/****************************************************/