关于apache自带的ab做并发测试的问题。

测试积点老人

各位高手，大家好，
   我现在这边有个棘手的问题需要解决，需要大家慷慨解囊。
   问题是这样的，我使用ab来做并发测试，看具体的并发数和相应时间。
   当我使用ab  -n 10000  -c 2000 http://192.168.1.123:8080/test/test.html.
   系统报错；

1. This is ApacheBench, Version 2.0.40-dev <$Revision: 1.146 [        DISCUZ_CODE_10        ]gt; apache-2.0
   
2.    Copyright 1996 Adam Twiss, Zeus Technology Ltd, http://www.zeustech.net/
   
3.    Copyright 1997-2005 The Apache Software Foundation, http://www.apache.org/
   
4. 
   
5.    Benchmarking 192.168.1.123 (be patient)
   
6.    apr_pollset_create failed: Invalid argument (22)

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经过测试系统-c并发数请求超过1024就会报以上的错误。

   上网找过类似问题，说是配置一下操作系统的注册表，调整MaxUserPort十进制为32768，TcpTimedWaitDelay十进制为240
   重启系统，经过测试还是报同样的错误。

   类似的问题说apache 的httpd.conf，启用httpd-mpm.conf ,并配置httpd-mpm.conf 如下：

1. #
   
2. # Server-Pool Management (MPM specific)
   
3. #
   
4. 
   
5. #
   
6. # PidFile: The file in which the server should record its process
   
7. # identification number when it starts.
   
8. #
   
9. # Note that this is the default PidFile for most MPMs.
   
10. #
    
11. <IfModule !mpm_netware_module>
    
12.     PidFile "logs/httpd.pid"
    
13. </IfModule>
    
14. 
    
15. #
    
16. # The accept serialization lock file MUST BE STORED ON A LOCAL DISK.
    
17. #
    
18. <IfModule !mpm_winnt_module>
    
19. <IfModule !mpm_netware_module>
    
20. LockFile "logs/accept.lock"
    
21. </IfModule>
    
22. </IfModule>
    
23. 
    
24. #
    
25. # Only one of the below sections will be relevant on your
    
26. # installed httpd.  Use "apachectl -l" to find out the
    
27. # active mpm.
    
28. #
    
29. 
    
30. # prefork MPM
    
31. # StartServers: number of server processes to start
    
32. # MinSpareServers: minimum number of server processes which are kept spare
    
33. # MaxSpareServers: maximum number of server processes which are kept spare
    
34. # MaxClients: maximum number of server processes allowed to start
    
35. # MaxRequestsPerChild: maximum number of requests a server process serves
    
36. <IfModule mpm_prefork_module>
    
37.     StartServers          5
    
38.     MinSpareServers       5
    
39.     MaxSpareServers      10
    
40.     ServerLimit        5500
    
41.     MaxClients         5000
    
42.     MaxRequestsPerChild 10000
    
43. </IfModule>
    
44. 
    
45. # worker MPM
    
46. # StartServers: initial number of server processes to start
    
47. # MaxClients: maximum number of simultaneous client connections
    
48. # MinSpareThreads: minimum number of worker threads which are kept spare
    
49. # MaxSpareThreads: maximum number of worker threads which are kept spare
    
50. # ThreadsPerChild: constant number of worker threads in each server process
    
51. # MaxRequestsPerChild: maximum number of requests a server process serves
    
52. <IfModule mpm_worker_module>
    
53.     StartServers          3
    
54.     ServerLimit         5500
    
55.     MaxClients          5000
    
56.     MinSpareThreads      50
    
57.     MaxSpareThreads      200
    
58.     ThreadLimit          200
    
59.     ThreadsPerChild      100
    
60.     MaxRequestsPerChild  10000
    
61. </IfModule>
    
62. 
    
63. # BeOS MPM
    
64. # StartThreads: how many threads do we initially spawn?
    
65. # MaxClients:   max number of threads we can have (1 thread == 1 client)
    
66. # MaxRequestsPerThread: maximum number of requests each thread will process
    
67. <IfModule mpm_beos_module>
    
68.     StartThreads            10
    
69.     MaxClients             5000
    
70.     MaxRequestsPerThread 10000
    
71. </IfModule>
    
72. 
    
73. # NetWare MPM
    
74. # ThreadStackSize: Stack size allocated for each worker thread
    
75. # StartThreads: Number of worker threads launched at server startup
    
76. # MinSpareThreads: Minimum number of idle threads, to handle request spikes
    
77. # MaxSpareThreads: Maximum number of idle threads
    
78. # MaxThreads: Maximum number of worker threads alive at the same time
    
79. # MaxRequestsPerChild: Maximum  number of requests a thread serves. It is
    
80. #                      recommended that the default value of 0 be set for this
    
81. #                      directive on NetWare.  This will allow the thread to
    
82. #                      continue to service requests indefinitely.                          
    
83. <IfModule mpm_netware_module>
    
84.     ThreadStackSize      65536
    
85.     StartThreads           250
    
86.     MinSpareThreads         25
    
87.     MaxSpareThreads        250
    
88.     MaxThreads            2000
    
89.     MaxRequestsPerChild      0
    
90.     MaxMemFree             100
    
91. </IfModule>
    
92. 
    
93. # OS/2 MPM
    
94. # StartServers: Number of server processes to maintain
    
95. # MinSpareThreads: Minimum number of idle threads per process,
    
96. #                  to handle request spikes
    
97. # MaxSpareThreads: Maximum number of idle threads per process
    
98. # MaxRequestsPerChild: Maximum number of connections per server process
    
99. <IfModule mpm_mpmt_os2_module>
    
100.     StartServers           2
     
101.     MinSpareThreads        5
     
102.     MaxSpareThreads       10
     
103.     MaxRequestsPerChild    0
     
104. </IfModule>
     
105. 
     
106. # WinNT MPM
     
107. # ThreadsPerChild: constant number of worker threads in the server process
     
108. # MaxRequestsPerChild: maximum  number of requests a server process serves
     
109. <IfModule mpm_winnt_module>
     
110.     ThreadsPerChild      2000
     
111.     MaxRequestsPerChild  10000
     
112. </IfModule>

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配置完，重启服务，经过测试，还是报一样的错误。

   试配置一下在tomcat的server.xml 中，把maxThreads改为2000，具体配置如下：

1. <Connector port="8080" maxHttpHeaderSize="8192"
   
2.                maxThreads="2000" minSpareThreads="25" maxSpareThreads="75"
   
3.                enableLookups="false" redirectPort="8443" acceptCount="100"
   
4.                connectionTimeout="20000" disableUploadTimeout="true"  URIEncoding="utf-8"/>

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还是报一样的错误。
我测试的客户端电脑的配置如下：
   CPU T2130 1.86GHz 1.06Ghz ,内存2.49GB  
   
   测试系统部署tomcat服务器的配置分别如下：
   cpu E3500 2.70GHz 2.70GHz 1.96GB

   CPU T2130 1.86GHz 1.06Ghz ,内存2.49GB  
     

   请高手指点迷津，我实在是测不出来了，呵呵！

海海豚

https://blog.csdn.net/janfly79/article/details/54093900  参考下这个

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