tomcat 优化到每秒并发1000

 

现在系统部署只能达到240+ , tomcat + apache 也只能到 900 + ，看到robbin的发帖能达到1000 ，不知道该如何配置，特来请教：

http://www.javaeye.com/post/370111?page=8

robbin 写道

既然你用tomcat4都可以达到并发600，那tomcat5.5在同样环境下经过调优完全可以达到1000，看来问题还是在于你们tomcat没有配置好。

附带环境配置如下：

 

  环境配置如下: （jdk没有用 -server）

windows 2003 企业版 sp2

Intel(R) Xeon(R) 4 CPU 5130 @ 2.0GHz 4.00GB 内存

apache_2.2.8-win32-x86

mod_jk-apache-2.0.59

jdk-1_5_0_14-windows-i586-p.exe -client

Tomcat-6.0.16 + apr

 

 

server.xml

<Executor name="tomcatThreadPool" namePrefix="catalina-exec-" maxThreads="2000" minSpareThreads="1000"/>


<Connector port="8080" protocol="HTTP/1.1"
           connectionTimeout="2000"
           redirectPort="8443"  enableLookups="false"
  acceptCount="5000" maxThreads="2000"/>

 

catalina.bat

set JAVA_OPTS=-Xms1400m -Xmx1400m -Djava.awt.headless=true

 

index.jsp (除了下面这些代码，还有200行html代码，没有一个图片)

<%
for(int i=0;i<1000;i++){
   request.setAttribute("key_"+i,"value_"+i);
}


for(int i=0;i<100;i++){
   request.getSession().setAttribute("key_"+i,"value_"+i);
}
%>
<br />
<%=request.getSession().getAttribute("key_0")%>
<%=request.getSession().getAttribute("key_0")%>
<%=request.getSession().getAttribute("key_0")%>
<%=request.getSession().getAttribute("key_0")%>
<%=request.getSession().getAttribute("key_0")%>
<%=request.getSession().getAttribute("key_0")%>

tomat 启动信息如下：

2008-5-6 17:54:52 org.apache.catalina.core.AprLifecycleListener init
信息: Loaded APR based Apache Tomcat Native library 1.1.10.
2008-5-6 17:54:52 org.apache.catalina.core.AprLifecycleListener init
信息: APR capabilities: IPv6 [false], sendfile [true], accept filters [false], r
andom [true].
2008-5-6 17:54:52 org.apache.coyote.http11.Http11AprProtocol init
信息: Initializing Coyote HTTP/1.1 on http-8080
2008-5-6 17:54:52 org.apache.coyote.ajp.AjpAprProtocol init
信息: Initializing Coyote AJP/1.3 on ajp-30008
2008-5-6 17:54:52 org.apache.catalina.startup.Catalina load
信息: Initialization processed in 973 ms
2008-5-6 17:54:52 org.apache.catalina.core.StandardService start
信息: Starting service Catalina
2008-5-6 17:54:52 org.apache.catalina.core.StandardEngine start
信息: Starting Servlet Engine: Apache Tomcat/6.0.16
2008-5-6 17:54:52 org.apache.coyote.http11.Http11AprProtocol start
信息: Starting Coyote HTTP/1.1 on http-8080
2008-5-6 17:54:53 org.apache.coyote.ajp.AjpAprProtocol start
信息: Starting Coyote AJP/1.3 on ajp-30008
2008-5-6 17:54:53 org.apache.catalina.startup.Catalina start
信息: Server startup in 310 ms

 

-----------------------------------------------------------------------------------------

下面是测试结果：

 

tomcat + apache 测试结果:

D:/Apache2.2/bin>ab -n 10000 -c 800 http://127.0.0.1/index.jsp

Server Software:        Apache/2.2.4
Server Hostname:        127.0.0.1
Server Port:            80

Document Path:          /index.jsp
Document Length:        41078 bytes

Concurrency Level:      800
Time taken for tests:   34.46875 seconds
Complete requests:      10000
Failed requests:        0
Write errors:           0
Total transferred:      413090000 bytes
HTML transferred:       410780000 bytes
Requests per second:    293.71 [#/sec] (mean)
Time per request:       2723.750 [ms] (mean)
Time per request:       3.405 [ms] (mean, across all concurrent requests)
Transfer rate:          11848.61 [Kbytes/sec] received

Connection Times (ms)
              min  mean[+/-sd] median   max
Connect:        0    0   1.8      0      15
Processing:    15 2034 3425.1    921   23265
Waiting:        0 2025 3423.8    921   23250
Total:         15 2034 3425.1    921   23265

Percentage of the requests served within a certain time (ms)
  50%    921
  66%   1343
  75%   1656
  80%   1875
  90%   5078
  95%   9421
  98%  15828
  99%  18171
 100%  23265 (longest request)

D:/Apache2.2/bin>ab -n 10000 -c 1000 http://127.0.0.1/index.jsp

Server Software:        Apache/2.2.4
Server Hostname:        127.0.0.1
Server Port:            80

Document Path:          /index.jsp
Document Length:        323 bytes

Concurrency Level:      1000
Time taken for tests:   24.265625 seconds
Complete requests:      10000
Failed requests:        3953
   (Connect: 0, Length: 3953, Exceptions: 0)
Write errors:           0
Non-2xx responses:      8686
Total transferred:      58651479 bytes
HTML transferred:       56541921 bytes
Requests per second:    412.11 [#/sec] (mean)
Time per request:       2426.563 [ms] (mean)
Time per request:       2.427 [ms] (mean, across all concurrent requests)
Transfer rate:          2360.38 [Kbytes/sec] received

Connection Times (ms)
              min  mean[+/-sd] median   max
Connect:        0    0   1.7      0      15
Processing:     0 1573 4416.4     31   23984
Waiting:        0 1563 4402.5     31   23984
Total:          0 1573 4416.5     31   23984

Percentage of the requests served within a certain time (ms)
  50%     31
  66%     62
  75%     62
  80%     62
  90%   7031
  95%  13234
  98%  18218
  99%  19859
 100%  23984 (longest request)

 tomcat 单独测试结果 (250并发会经常失败，200比较正常，偶尔有少量错误):

D:/Apache2.2/bin>ab -n 1000 -c 250 http://127.0.0.1:8080/index.jsp
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 127.0.0.1 (be patient)
Completed 100 requests
Send request failed!
Send request failed!
Send request failed!
Send request failed!
Send request failed!
Completed 200 requests
Send request failed!
apr_socket_recv: 远程主机强迫关闭了一个现有的连接。   (730054)
Total of 223 requests completed

D:/Apache2.2/bin>ab -n 1000 -c 250 http://127.0.0.1:8080/index.jsp

Server Software:        Apache-Coyote/1.1
Server Hostname:        127.0.0.1
Server Port:            8080

Document Path:          /index.jsp
Document Length:        41078 bytes

Concurrency Level:      250
Time taken for tests:   2.390625 seconds
Complete requests:      1000
Failed requests:        0
Write errors:           0
Total transferred:      41292000 bytes
HTML transferred:       41078000 bytes
Requests per second:    418.30 [#/sec] (mean)
Time per request:       597.656 [ms] (mean)
Time per request:       2.391 [ms] (mean, across all concurrent requests)
Transfer rate:          16867.56 [Kbytes/sec] received

Connection Times (ms)
              min  mean[+/-sd] median   max
Connect:        0    0   1.9      0      15
Processing:   109  575 314.1    515    1218
Waiting:       62  550 315.0    453    1156
Total:        109  575 314.1    515    1218

Percentage of the requests served within a certain time (ms)
  50%    515
  66%    609
  75%    921
  80%   1031
  90%   1062
  95%   1125
  98%   1140
  99%   1140
 100%   1218 (longest request)

 

单独测试tomcat基本上只能达到240+左右的并发，tomcat+apache 900+并发，如果是静态页面tomcat并发1000+没有任何问题。

tomcat基本上都保持在 20% - 45% 之间 ， 内存在 80M -- 600M +之间 ，根据并发和请求的大小，内存的变法比较明显，cpu基本保存在这里，apache占用的cpu基本上是在 15% - 40%。

因为JRockit收费，所以就没有测试。（主要是真实部署的时候会采用这些配置，收费的公司目前也不会购买！^_^）

 

不知道大家如何配置tomcat能并发1000左右 ？？？？？？？？