tomcat集群环境中的内存泄漏

Question

我的应用程序出现OutOfMemory异常。我已经把垃圾堆和垫子翻了个底朝天。在分析我的应用程序内存使用情况时，我发现以下疑点。我无法理解这些嫌疑人背后的主要原因。

请帮助我了解这种泄漏的怀疑和什么相关的解决方案。

“AJP-Bio-9002”-exec-5 at java.util.arrays.copyof([ci)[C(arrays.java:2882)at java.lang.abstractStringBuilder.expandCapacity(I)V(abstractStringBuilder.append(C)ljava/lang/abstractStringBuilder.append)ljava/lang/abstractStringBuilder.append)ljava/lang/abstractStringBuilder；（edhtmlparser.java:303)在org.apache.myfaces.renderkit.html.util.reducedhtmlparser.consumeattrvalue（）ljava/lang/string；（reducedhtmlparser.java:327)在org.apache.myfaces.renderkit.html.util.reducedhtmlparser.parse（）在org.apache.myfaces.renderkit.html.util.reducedhtmlparser.java:579)在org.apache.myfaces.renderkit.html.util.DefaultAddResource.Parseresponse（ljavax/servlet/http/HttpServletRequest；LJAva/lang/string；ljavax/servlet/http/httpservletresponse；）V（defaultaddresource.java:699)在org.apache.myfaces.webapp.filter.extensionsfilter.doFilter（ljavax/servlet/servletrequest；ljavax/servlet/servletresponse；ljavax/servlet/filterchain；）V（extensionsfilter.java:157)在org.apache.catalina.core.applicationfilter.java:157)在chain.doFilter（ljavax/servlet/servletrequest；ljavax/servlet/servletresponse；）V（applicationfilterchain.java:210)在org.apache.catalina.core.standardWrapperValve.invoke（lorg/apache/catalina/connector/request；lorg/apache/catalina/connector/request；lorg/apache/catalina/connector/response；）V（standardWrapperValve.java:240)在Lorg/apache/catalina/connector/request；lorg/apache/catalina/connector/response；）V（authenticatorbase.java:462)在org.apache.catalina.core.standardhostvalve.invoke（lorg/apache/catalina/connector/request；lorg/apache/catalina/connector/response；）V（standardhostvalve.java:164)在org.apache.catalina.invoke（/connector/request；lorg/apache/catalina/connector/response；）V（accesslogvalve.java:562)在org.apache.catalina.core.standardenginevalve.invoke（lorg/apache/catalina/connector/request；lorg/apache/catalina/connector/response；）V（standardenginevalve.java:118)在org.apache.catalina/connector/response；jvmrouteBindervalve.java Lorg/Apache/catalina/connector/request；lorg/apache/catalina/connector/response；）V（replicationvalve.java:333)在org.apache.catalina.connector.coyoteadapter.service（lorg/apache/coyote/request；lorg/apache/coyote/request；lorg/apache/coyote/response；）V（coyoteadapter.java:395)在org.apache.coyote.ajp.ajp.ajpprocessor.process（ajp.ajpProtocol$ajpConnectionHandler.process（lorg/apache/tomcat/util/net/socketwrapper；lorg/apache/tomcat/util/net/socketwrapper；lorg/apache/tomcat/util/net/socketstatus；）lorg/apache/tomcat/util/net/socketstatus；lorg/apache/tomcat/util/net/socketstatus；lorg/apache/tomcat/util/net/socketstatus；9）在org.apache.tomcat.util.net.jioEndpoint$socketprocessor.run（）V(jioEndpoint.java:302)在java.util.concurrent.ThreadPoolExecutor$worker.runtask（ljava/lang/runnable；）V(threadpoolexecutor.java:886)在java.util.concurrent.threadpoolexecutor$worker.run（）V(threadpoolexecutor.java:908)在java.lang.thread.run（）V(thread.java:662)

嫌疑人2

由“”加载的一个“java.lang.StringBuffer”实例占用59,216,088（26.35%）字节。该实例由org.apache.myfaces.renderkit.html.util.reducedHtmlParser@0x276990e8引用，由“org.apache.catalina.loader.webappclassloader@0x29592038”加载。内存积累在由“”加载的“char[]”的一个实例中。

Answer 1

您可以转到内存分析器(MAT)的“Dominator_Tree”选项卡并展开任务线程。这将显示任务线程中所有对象的保留堆。这可能有助于您找到应用程序中导致问题的部分（代码）。