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Tomcat 上奇怪的 Jmeter 连接被拒绝

tag-icon • tag-icon tomcat java connection stress-testing jmeter
Tomcat 上奇怪的 Jmeter 连接被拒绝

我尝试了 Jmeter 和 Tomcat 中的差异设置。

如果JMeter中的线程数是1~200，那么tomcat就可以了。

如果是 300，那么在处理几个请求后，tomcat 开始输出错误。

这是 JMeter 中显示的错误

java.net.ConnectException: Connection refused: connect
at java.net.PlainSocketImpl.socketConnect(Native Method)
at java.net.PlainSocketImpl.doConnect(Unknown Source)
at java.net.PlainSocketImpl.connectToAddress(Unknown Source)
at java.net.PlainSocketImpl.connect(Unknown Source)
at java.net.SocksSocketImpl.connect(Unknown Source)
at java.net.Socket.connect(Unknown Source)
at java.net.Socket.connect(Unknown Source)
at sun.net.NetworkClient.doConnect(Unknown Source)
at sun.net.www.http.HttpClient.openServer(Unknown Source)
at sun.net.www.http.HttpClient.openServer(Unknown Source)
at sun.net.www.http.HttpClient.<init>(Unknown Source)
at sun.net.www.http.HttpClient.New(Unknown Source)
at sun.net.www.http.HttpClient.New(Unknown Source)
at sun.net.www.protocol.http.HttpURLConnection.getNewHttpClient(Unknown Source)
at sun.net.www.protocol.http.HttpURLConnection.plainConnect(Unknown Source)
at sun.net.www.protocol.http.HttpURLConnection.connect(Unknown Source)
at org.apache.jmeter.protocol.http.sampler.HTTPJavaImpl.sample(HTTPJavaImpl.java:483)
at org.apache.jmeter.protocol.http.sampler.HTTPSamplerProxy.sample(HTTPSamplerProxy.java:62)
at org.apache.jmeter.protocol.http.sampler.HTTPSamplerBase.sample(HTTPSamplerBase.java:1018)
at org.apache.jmeter.protocol.http.sampler.HTTPSamplerBase.sample(HTTPSamplerBase.java:1004)
at org.apache.jmeter.threads.JMeterThread.process_sampler(JMeterThread.java:411)
at org.apache.jmeter.threads.JMeterThread.run(JMeterThread.java:297)
at java.lang.Thread.run(Unknown Source)

我的 eclipse 中的 tomcat server.xml

<!--The connectors can use a shared executor, you can define one or more named thread pools-->
<Executor name="tomcatThreadPool" namePrefix="catalina-exec-" 
    maxThreads="2000" minSpareThreads="250"
    acceptCount="2000"/>

<Connector executor="tomcatThreadPool" URIEncoding="UTF-8" connectionTimeout="20000" port="8080" protocol="HTTP/1.1" redirectPort="8443" />

知道为什么会发生这种情况吗？如何检查 server.xml 是否正确使用？

如果有帮助的话，它是一个 JSF2 应用程序。

提前致谢。

答案1

我遇到了同样的问题，原来是 XP 中半开套接字连接的限制。
我使用这个工具解决了该问题：

http://www.megaleecher.net/Tcpip.sys_Patch_To_Increase_Windows_XP_Connection_Limit

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