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sun2009
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Tomcat6每秒最多并发60

    博客分类：
  • JAVA
tomcat、优化、并发 
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这个话题可能有点老了，但是我没有找到具体的答案，所以再拿出了讨论下。

看了robbin轻松并发1000,我却怎么都搞不起来，很是疑惑，望有经验的同仁指点。

 


服务器配置：


操作系统：Red Hat Enterprise 5 64位


CPU:       2颗4核Intel(R) Xeon(R) CPU  E5410  @ 2.33GHz 64位


内存：     8G


Tomcat : 6.0.18

 

Tomcat配置：

 

<Executor name="tomcatThreadPool" namePrefix="catalina-exec-" 
        maxThreads="1000" minSpareThreads="25" />

    <Connector port="80" executor="tomcatThreadPool" protocol="HTTP/1.1" redirectPort="443" 
        connectionTimeout="20000" maxThreads="1000" acceptCount="250" minSpareThreads="25" 
        maxSpareThreads="75" enableLookups="false" compression="on" compressionMinSize="2048"
        compressableMimeType="text/html,text/xml,text/javascript,text/css,text/plain"
        disableUploadTimeout="true" URIEncoding="UTF-8"/>
 

 

我在自己电脑上测服务器并发

 

C:\Program Files\Apache Group\Apache2\bin>ab -n 1000 -c 60 http://www.mytomcat.cn/
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) 2006 The Apache Software Foundation, http://www.apache.org/

Benchmarking www.mytomcat.cn (be patient)
Completed 100 requests
Completed 200 requests
Completed 300 requests
Completed 400 requests
Completed 500 requests
Completed 600 requests
Completed 700 requests
Completed 800 requests
Completed 900 requests
Finished 1000 requests


Server Software:        Apache-Coyote/1.1
Server Hostname:        www.mytomcat.cn
Server Port:            80

Document Path:          /
Document Length:        154468 bytes

Concurrency Level:      60
Time taken for tests:   134.593750 seconds
Complete requests:      1000
Failed requests:        3
   (Connect: 3, Length: 0, Exceptions: 0)
Write errors:           0
Total transferred:      154674000 bytes
HTML transferred:       154468000 bytes
Requests per second:    7.43 [#/sec] (mean)
Time per request:       8075.625 [ms] (mean)
Time per request:       134.594 [ms] (mean, across all concurrent requests)
Transfer rate:          1122.25 [Kbytes/sec] received

Connection Times (ms)
              min  mean[+/-sd] median   max
Connect:        0   68 699.4     15    9046
Processing:    31 7919 12149.5    844   51813
Waiting:        0 3764 9156.9    328   30656
Total:         46 7988 12189.6    859   51828

Percentage of the requests served within a certain time (ms)
  50%    859
  66%    906
  75%  12703
  80%  24750
  90%  30781
  95%  30812
  98%  33656
  99%  33718
 100%  51828 (longest request)

 

C:\Program Files\Apache Group\Apache2\bin>ab -n 1000 -c 70 http://www.mytomcat.cn/
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) 2006 The Apache Software Foundation, http://www.apache.org/

Benchmarking www.mytomcat.cn (be patient)
apr_pollset_create failed: Invalid argument (22)

 

才并发70就不行了，maxThreads , acceptCount, minSpareThreads,maxSpareThreads这几个参数怎么样设置为最佳，欢迎来拍砖

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3 楼 sun2009 2009-08-04  
知道原因了，我自己电脑问题。改在服务器上测试，数据如下： 

[root@localhost bin]# ab -n 10000 -c 1000 http://www.mytomcat.cn/
This is ApacheBench, Version 2.0.40-dev <$Revision: 1.146 $> apache-2.0
Copyright 1996 Adam Twiss, Zeus Technology Ltd, http://www.zeustech.net/
Copyright 2006 The Apache Software Foundation, http://www.apache.org/

Benchmarking www.mytomcat.cn (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
Finished 10000 requests


Server Software:        
Server Hostname:        www.mytomcat.cn
Server Port:            80

Document Path:          /
Document Length:        0 bytes

Concurrency Level:      1000
Time taken for tests:   108.106467 seconds
Complete requests:      10000
Failed requests:        60
   (Connect: 0, Length: 60, Exceptions: 0)
Write errors:           0
Non-2xx responses:      9775
Total transferred:      4133782 bytes
HTML transferred:       22140 bytes
Requests per second:    92.50 [#/sec] (mean)
Time per request:       10810.647 [ms] (mean)
Time per request:       10.811 [ms] (mean, across all concurrent requests)
Transfer rate:          37.33 [Kbytes/sec] received

Connection Times (ms)
              min  mean[+/-sd] median   max
Connect:        0 4204 8252.3    957   94190
Processing:    35 3436 10613.3    840   66946
Waiting:        0 2146 6375.8    820   63949
Total:         46 7640 12707.9   2478   95350

Percentage of the requests served within a certain time (ms)
  50%   2478
  66%   4647
  75%   7571
  80%  10401
  90%  22330
  95%  46270
  98%  60236
  99%  61223
 100%  95350 (longest request)



[root@localhost bin]# ab -n 10000 -c 1000 http://www.mytomcat.cn/
This is ApacheBench, Version 2.0.40-dev <$Revision: 1.146 $> apache-2.0
Copyright 1996 Adam Twiss, Zeus Technology Ltd, http://www.zeustech.net/
Copyright 2006 The Apache Software Foundation, http://www.apache.org/

Benchmarking www.mytomcat.cn (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
Finished 10000 requests


Server Software:        
Server Hostname:        www.mytomcat.cn
Server Port:            80

Document Path:          /
Document Length:        0 bytes

Concurrency Level:      1000
Time taken for tests:   126.468671 seconds
Complete requests:      10000
Failed requests:        59
   (Connect: 0, Length: 59, Exceptions: 0)
Write errors:           0
Non-2xx responses:      9464
Total transferred:      4003331 bytes
HTML transferred:       21771 bytes
Requests per second:    79.07 [#/sec] (mean)
Time per request:       12646.867 [ms] (mean)
Time per request:       12.647 [ms] (mean, across all concurrent requests)
Transfer rate:          30.91 [Kbytes/sec] received

Connection Times (ms)
              min  mean[+/-sd] median   max
Connect:        0 3560 7641.3    852   93969
Processing:    13 5115 14623.1    786   71828
Waiting:        0 1896 5952.3    740   62251
Total:         38 8676 15604.4   2031   94669

Percentage of the requests served within a certain time (ms)
  50%   2031
  66%   4534
  75%   5735
  80%  10219
  90%  22583
  95%  61123
  98%  61218
  99%  66278
 100%  94669 (longest request)


上面我运行了2次的结果，感觉比较慢，而且Failed requests有60个，不知道该如何优化了，欢迎拍砖？
2 楼 yiding_he 2009-08-04  
先看看静态页面（It works!）能达到多少并发吧。
1 楼 wuyuhua 2009-08-04  
http://www.mytomcat.cn/   里面的内容是什么？？
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