We're upgrading our application servers from Jboss3.2.4 to JBoss4.0.1. Currently, our web application runs fine (fine == 50k page requests and no crashes, GC working properly).
However, after the upgrade to 4.0.1, the application still serves content but at about 25k page requests (25/second) it kills the server with an OutOfMemoryError. I would normally consider this to be a developer memory leak issue, but the codebase is IDENTICAL between the two server deployments. Running top on our redhat machines, I watch the mem usage rise to 1.6GB and then the problems start. It does not appear to be garbage collecting, which I guess it wouldn't if it still had active objects (or so it thinks). =========================================== The question is: Is something different about the XML/XSLT libaries between jboss3 and jboss4 that would either cause an inconsistency or introduce a memory leak in our deployment? If so, what would the appropriate jar/lib to update to? =========================================== System Knowledge: I threw JMemprof up on there and I'm not really getting a great amount of information. The peculiar piece of it is that the highest number of objects seem to be of type "unknown" (gee, thanks). Checking the method hierarchy, there are a LOT of xalan related method calls. The stack traces ALWAYS come from the xalan libraries. Here's an example: javax.xml.transform.TransformerException: java.lang.OutOfMemoryError at org.apache.xalan.extensions.ExtensionHandlerJavaPackage.callFunction(ExtensionHandlerJavaPackage.java:403) at org.apache.xalan.extensions.ExtensionHandlerJavaPackage.callFunction(ExtensionHandlerJavaPackage.java:426) at org.apache.xalan.extensions.ExtensionsTable.extFunction(ExtensionsTable.java:220) at org.apache.xalan.transformer.TransformerImpl.extFunction(TransformerImpl.java:437) at org.apache.xpath.functions.FuncExtFunction.execute(FuncExtFunction.java:199) at org.apache.xpath.XPath.execute(XPath.java:268) at org.apache.xalan.templates.ElemVariable.getValue(ElemVariable.java:279) at org.apache.xalan.templates.ElemVariable.execute(ElemVariable.java:247) at org.apache.xalan.transformer.TransformerImpl.executeChildTemplates(TransformerImpl.java:2336) at org.apache.xalan.templates.ElemChoose.execute(ElemChoose.java:127) at org.apache.xalan.transformer.TransformerImpl.executeChildTemplates(TransformerImpl.java:2336) at org.apache.xalan.templates.ElemTemplate.execute(ElemTemplate.java:393) at org.apache.xalan.templates.ElemCallTemplate.execute(ElemCallTemplate.java:247) at org.apache.xalan.transformer.TransformerImpl.executeChildTemplates(TransformerImpl.java:2336) at org.apache.xalan.templates.ElemTemplate.execute(ElemTemplate.java:393) at org.apache.xalan.templates.ElemCallTemplate.execute(ElemCallTemplate.java:247) at org.apache.xalan.templates.ElemApplyTemplates.transformSelectedNodes(ElemApplyTemplates.java:395) at org.apache.xalan.templates.ElemApplyTemplates.execute(ElemApplyTemplates.java:177) at org.apache.xalan.templates.ElemApplyTemplates.transformSelectedNodes(ElemApplyTemplates.java:395) at org.apache.xalan.templates.ElemApplyTemplates.execute(ElemApplyTemplates.java:177) at org.apache.xalan.transformer.TransformerImpl.executeChildTemplates(TransformerImpl.java:2336) at org.apache.xalan.templates.ElemLiteralResult.execute(ElemLiteralResult.java:682) at org.apache.xalan.transformer.TransformerImpl.executeChildTemplates(TransformerImpl.java:2336) at org.apache.xalan.templates.ElemTemplate.execute(ElemTemplate.java:393) at org.apache.xalan.templates.ElemCallTemplate.execute(ElemCallTemplate.java:247) at org.apache.xalan.transformer.TransformerImpl.executeChildTemplates(TransformerImpl.java:2336) at org.apache.xalan.templates.ElemChoose.execute(ElemChoose.java:127) at org.apache.xalan.transformer.TransformerImpl.executeChildTemplates(TransformerImpl.java:2336) at org.apache.xalan.templates.ElemTemplate.execute(ElemTemplate.java:393) at org.apache.xalan.templates.ElemCallTemplate.execute(ElemCallTemplate.java:247) at org.apache.xalan.templates.ElemApplyTemplates.transformSelectedNodes(ElemApplyTemplates.java:395) at org.apache.xalan.templates.ElemApplyTemplates.execute(ElemApplyTemplates.java:177) at org.apache.xalan.transformer.TransformerImpl.executeChildTemplates(TransformerImpl.java:2336) at org.apache.xalan.templates.ElemChoose.execute(ElemChoose.java:127) at org.apache.xalan.transformer.TransformerImpl.executeChildTemplates(TransformerImpl.java:2336) at org.apache.xalan.templates.ElemTemplate.execute(ElemTemplate.java:393) at org.apache.xalan.templates.ElemCallTemplate.execute(ElemCallTemplate.java:247) at org.apache.xalan.transformer.TransformerImpl.executeChildTemplates(TransformerImpl.java:2336) at org.apache.xalan.templates.ElemTemplate.execute(ElemTemplate.java:393) at org.apache.xalan.templates.ElemCallTemplate.execute(ElemCallTemplate.java:247) at org.apache.xalan.templates.ElemApplyTemplates.transformSelectedNodes(ElemApplyTemplates.java:395) at org.apache.xalan.templates.ElemApplyTemplates.execute(ElemApplyTemplates.java:177) at org.apache.xalan.templates.ElemApplyTemplates.transformSelectedNodes(ElemApplyTemplates.java:395) at org.apache.xalan.templates.ElemApplyTemplates.execute(ElemApplyTemplates.java:177) at org.apache.xalan.transformer.TransformerImpl.executeChildTemplates(TransformerImpl.java:2336) at org.apache.xalan.templates.ElemElement.constructNode(ElemElement.java:338) at org.apache.xalan.templates.ElemElement.execute(ElemElement.java:287) at org.apache.xalan.transformer.TransformerImpl.executeChildTemplates(TransformerImpl.java:2336) at org.apache.xalan.templates.ElemTemplate.execute(ElemTemplate.java:393) at org.apache.xalan.templates.ElemCallTemplate.execute(ElemCallTemplate.java:247) at org.apache.xalan.transformer.TransformerImpl.executeChildTemplates(TransformerImpl.java:2336) at org.apache.xalan.templates.ElemChoose.execute(ElemChoose.java:127) at org.apache.xalan.transformer.TransformerImpl.executeChildTemplates(TransformerImpl.java:2336) at org.apache.xalan.templates.ElemTemplate.execute(ElemTemplate.java:393) at org.apache.xalan.templates.ElemCallTemplate.execute(ElemCallTemplate.java:247) at org.apache.xalan.templates.ElemApplyTemplates.transformSelectedNodes(ElemApplyTemplates.java:395) at org.apache.xalan.templates.ElemApplyTemplates.execute(ElemApplyTemplates.java:177) at org.apache.xalan.transformer.TransformerImpl.executeChildTemplates(TransformerImpl.java:2336) at org.apache.xalan.templates.ElemChoose.execute(ElemChoose.java:127) at org.apache.xalan.transformer.TransformerImpl.executeChildTemplates(TransformerImpl.java:2336) at org.apache.xalan.templates.ElemTemplate.execute(ElemTemplate.java:393) at org.apache.xalan.templates.ElemCallTemplate.execute(ElemCallTemplate.java:247) at org.apache.xalan.transformer.TransformerImpl.executeChildTemplates(TransformerImpl.java:2336) at org.apache.xalan.templates.ElemTemplate.execute(ElemTemplate.java:393) at org.apache.xalan.templates.ElemCallTemplate.execute(ElemCallTemplate.java:247) at org.apache.xalan.templates.ElemApplyTemplates.transformSelectedNodes(ElemApplyTemplates.java:395) at org.apache.xalan.templates.ElemApplyTemplates.execute(ElemApplyTemplates.java:177) at org.apache.xalan.templates.ElemApplyTemplates.transformSelectedNodes(ElemApplyTemplates.java:395) at org.apache.xalan.templates.ElemApplyTemplates.execute(ElemApplyTemplates.java:177) at org.apache.xalan.transformer.TransformerImpl.executeChildTemplates(TransformerImpl.java:2336) at org.apache.xalan.templates.ElemLiteralResult.execute(ElemLiteralResult.java:682) at org.apache.xalan.transformer.TransformerImpl.executeChildTemplates(TransformerImpl.java:2336) at org.apache.xalan.templates.ElemTemplate.execute(ElemTemplate.java:393) at org.apache.xalan.templates.ElemCallTemplate.execute(ElemCallTemplate.java:247) at org.apache.xalan.transformer.TransformerImpl.executeChildTemplates(TransformerImpl.java:2336) at org.apache.xalan.templates.ElemChoose.execute(ElemChoose.java:127) at org.apache.xalan.transformer.TransformerImpl.executeChildTemplates(TransformerImpl.java:2336) at org.apache.xalan.templates.ElemTemplate.execute(ElemTemplate.java:393) at org.apache.xalan.templates.ElemCallTemplate.execute(ElemCallTemplate.java:247) at org.apache.xalan.templates.ElemApplyTemplates.transformSelectedNodes(ElemApplyTemplates.java:395) at org.apache.xalan.templates.ElemApplyTemplates.execute(ElemApplyTemplates.java:177) at org.apache.xalan.transformer.TransformerImpl.executeChildTemplates(TransformerImpl.java:2336) at org.apache.xalan.templates.ElemChoose.execute(ElemChoose.java:127) at org.apache.xalan.transformer.TransformerImpl.executeChildTemplates(TransformerImpl.java:2336) at org.apache.xalan.templates.ElemTemplate.execute(ElemTemplate.java:393) at org.apache.xalan.templates.ElemCallTemplate.execute(ElemCallTemplate.java:247) at org.apache.xalan.transformer.TransformerImpl.executeChildTemplates(TransformerImpl.java:2336) at org.apache.xalan.templates.ElemTemplate.execute(ElemTemplate.java:393) at org.apache.xalan.templates.ElemCallTemplate.execute(ElemCallTemplate.java:247) at org.apache.xalan.templates.ElemApplyTemplates.transformSelectedNodes(ElemApplyTemplates.java:395) at org.apache.xalan.templates.ElemApplyTemplates.execute(ElemApplyTemplates.java:177) at org.apache.xalan.transformer.TransformerImpl.executeChildTemplates(TransformerImpl.java:2336) at org.apache.xalan.templates.ElemLiteralResult.execute(ElemLiteralResult.java:682) at org.apache.xalan.templates.ElemApplyTemplates.transformSelectedNodes(ElemApplyTemplates.java:395) at org.apache.xalan.templates.ElemApplyTemplates.execute(ElemApplyTemplates.java:177) at org.apache.xalan.transformer.TransformerImpl.executeChildTemplates(TransformerImpl.java:2336) at org.apache.xalan.templates.ElemIf.execute(ElemIf.java:161) at org.apache.xalan.transformer.TransformerImpl.executeChildTemplates(TransformerImpl.java:2336) at org.apache.xalan.templates.ElemLiteralResult.execute(ElemLiteralResult.java:682) at org.apache.xalan.transformer.TransformerImpl.executeChildTemplates(TransformerImpl.java:2336) at org.apache.xalan.templates.ElemLiteralResult.execute(ElemLiteralResult.java:682) at org.apache.xalan.transformer.TransformerImpl.executeChildTemplates(TransformerImpl.java:2336) at org.apache.xalan.templates.ElemLiteralResult.execute(ElemLiteralResult.java:682) at org.apache.xalan.transformer.TransformerImpl.executeChildTemplates(TransformerImpl.java:2336) at org.apache.xalan.templates.ElemLiteralResult.execute(ElemLiteralResult.java:682) at org.apache.xalan.transformer.TransformerImpl.executeChildTemplates(TransformerImpl.java:2336) at org.apache.xalan.templates.ElemLiteralResult.execute(ElemLiteralResult.java:682) at org.apache.xalan.transformer.TransformerImpl.executeChildTemplates(TransformerImpl.java:2336) at org.apache.xalan.templates.ElemTemplate.execute(ElemTemplate.java:393) at org.apache.xalan.templates.ElemCallTemplate.execute(ElemCallTemplate.java:247) at org.apache.xalan.transformer.TransformerImpl.executeChildTemplates(TransformerImpl.java:2336) at org.apache.xalan.templates.ElemLiteralResult.execute(ElemLiteralResult.java:682) at org.apache.xalan.transformer.TransformerImpl.executeChildTemplates(TransformerImpl.java:2336) at org.apache.xalan.templates.ElemLiteralResult.execute(ElemLiteralResult.java:682) at org.apache.xalan.transformer.TransformerImpl.executeChildTemplates(TransformerImpl.java:2336) at org.apache.xalan.templates.ElemLiteralResult.execute(ElemLiteralResult.java:682) at org.apache.xalan.transformer.TransformerImpl.executeChildTemplates(TransformerImpl.java:2336) at org.apache.xalan.templates.ElemLiteralResult.execute(ElemLiteralResult.java:682) at org.apache.xalan.transformer.TransformerImpl.executeChildTemplates(TransformerImpl.java:2336) at org.apache.xalan.templates.ElemLiteralResult.execute(ElemLiteralResult.java:682) at org.apache.xalan.transformer.TransformerImpl.executeChildTemplates(TransformerImpl.java:2336) at org.apache.xalan.templates.ElemLiteralResult.execute(ElemLiteralResult.java:682) at org.apache.xalan.transformer.TransformerImpl.executeChildTemplates(TransformerImpl.java:2336) at org.apache.xalan.templates.ElemTemplate.execute(ElemTemplate.java:393) at org.apache.xalan.templates.ElemCallTemplate.execute(ElemCallTemplate.java:247) at org.apache.xalan.templates.ElemApplyTemplates.transformSelectedNodes(ElemApplyTemplates.java:395) at org.apache.xalan.templates.ElemApplyTemplates.execute(ElemApplyTemplates.java:177) at org.apache.xalan.transformer.TransformerImpl.executeChildTemplates(TransformerImpl.java:2336) at org.apache.xalan.transformer.TransformerImpl.applyTemplateToNode(TransformerImpl.java:2202) at org.apache.xalan.transformer.TransformerImpl.transformNode(TransformerImpl.java:1276) at org.apache.xalan.transformer.TransformerImpl.transform(TransformerImpl.java:673) at org.apache.xalan.transformer.TransformerImpl.transform(TransformerImpl.java:1192) at org.apache.xalan.transformer.TransformerImpl.transform(TransformerImpl.java:1170) at com.mycompany.SpecificResponse.applyXslt(Unknown Source) at com.mycompany.SpecificServlet.service(Unknown Source) at javax.servlet.http.HttpServlet.service(HttpServlet.java:810) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:237) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157) at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:75) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:186) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:214) at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104) at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520) at org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:198) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:152) at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104) at org.jboss.web.tomcat.security.CustomPrincipalValve.invoke(CustomPrincipalValve.java:66) at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:102) at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:150) at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:102) at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:54) at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:102) at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:137) at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:118) at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:102) at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109) at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104) at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520) at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:929) at org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:160) at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:799) at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:705) at org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:577) at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:683) at java.lang.Thread.run(Thread.java:534) Caused by: java.lang.OutOfMemoryError Obviously I changed the company name and class names. I've tried a number of XSLT transformation optimizations: 1) static the TransformerFactory instance 2) hashmap cache the Templates objects so they can be used again, if possible 3) tFactory.setAttribute ("http://xml.apache.org/xalan/features/incremental", java.lang.Boolean.TRUE); as was suggested by: http://xml.apache.org/xalan-j/dtm.html#incremental Most of these were already in our codebase before the switch. =========================================== Any help would be most appreciated. =========================================== -ian View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3900935#3900935 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=3900935 ------------------------------------------------------- This SF.Net email is sponsored by: Power Architecture Resource Center: Free content, downloads, discussions, and more. http://solutions.newsforge.com/ibmarch.tmpl _______________________________________________ JBoss-user mailing list JBoss-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/jboss-user