I am system administrator and am not aware of java and analysis the thread dump that is causing high CPU utilization in one of the production environment. I have implemented the script in linux environment to get the cpu wise thread report and found out the thread which is causing the issue. I have done some study in the google and seems like the issue with xalan jar file where we are using both the minor and majar version in the server [ xalan2.7.0.jar & xalan2.7.1.jar]. Please can someone help me in resolve this issue. Below is the thread which was causing the performance issue caused by high CPU. I included the -Dorg.apache.xml.dtm.DTMManager=org.apache.xml.dtm.ref.DTMManagerDefault in the startup script but still causing the issue.
"ajp-bio-8649-exec-147" daemon prio=10 tid=0x00000000432f6000 nid=0xe41b runnable [0x00007f37f4bd0000] java.lang.Thread.State: RUNNABLE at org.apache.xml.dtm.ref.dom2dtm.DOM2DTM.addNode(DOM2DTM.java:235) at org.apache.xml.dtm.ref.dom2dtm.DOM2DTM.nextNode(DOM2DTM.java:539) at org.apache.xml.dtm.ref.dom2dtm.DOM2DTM.getHandleFromNode(DOM2DTM.java:676) at org.apache.xml.dtm.ref.dom2dtm.DOM2DTM.getHandleOfNode(DOM2DTM.java:728) at org.apache.xml.dtm.ref.DTMManagerDefault.getDTMHandleFromNode(DTMManagerDefault.java:571) - locked <0x00007f388d7b4d08> (a org.apache.xml.dtm.ref.DTMManagerDefault) at org.apache.xpath.XPathContext.getDTMHandleFromNode(XPathContext.java:182) at org.apache.xpath.XPathAPI.eval(XPathAPI.java:236) at org.apache.xpath.XPathAPI.selectNodeIterator(XPathAPI.java:126) at org.apache.xpath.XPathAPI.selectNodeIterator(XPathAPI.java:106) at com.ezdata.xml.XMLHelper.selectNodes(XMLHelper.java:589) at com.ezdata.xml.XMLHelper.selectSingleNode(XMLHelper.java:593) at com.ezdata.cdsportal.web.ColumnStatistic.writeSummarySubTotal(ColumnStatistic.java:695) at com.ezdata.cdsportal.web.ColumnStatistic.writeSubTotal(ColumnStatistic.java:384) at com.ezdata.web.framework.tags.data.BaseStatistic.writeSubTotal(BaseStatistic.java:205) at com.ezdata.cdsportal.web.ColumnStatistic.writeSubTotal(ColumnStatistic.java:369) at com.ezdata.web.framework.tags.data.BaseStatistic.onSubTotal(BaseStatistic.java:157) at com.ezdata.cdsportal.web.ColumnStatistic.onSubTotal(ColumnStatistic.java:352) at com.ezdata.cdsportal.web.dynreport.ReportRunner.beforeItems(ReportRunner.java:1396) at com.ezdata.web.XMLEvent.fire(XMLEvent.java:149) at com.ezdata.web.WebEventObject._fire(WebEventObject.java:183) at com.ezdata.web.WebEventObject.fire(WebEventObject.java:113) at com.ezdata.cdsportal.web.Application.genSpreadSheet(Application.java:2564) at com.ezdata.web.PageEngine.loadObject(PageEngine.java:1038) at com.ezdata.web.component.WindowComponent.run(WindowComponent.java:128) at com.ezdata.web.component.WindowComponent.run(WindowComponent.java:73) at com.ezdata.web.PageEngine.loadObject(PageEngine.java:1036) at com.ezdata.web.PageEngine.processCDSForm(PageEngine.java:1466) at com.ezdata.web.PageEngine.loadFormWithException(PageEngine.java:1196) at com.ezdata.web.PageEngine.loadFormWithException(PageEngine.java:1148) at com.ezdata.web.PageEngine.loadForm(PageEngine.java:1237) at com.ezdata.web.PageEngine.loadForm(PageEngine.java:1227) at com.ezdata.web.PageEngine.run(PageEngine.java:820) at com.ezdata.cdsportal.cdsApp.processRequest(cdsApp.java:142) at com.ezdata.cdsportal.cdsApp.doGet(cdsApp.java:211) at javax.servlet.http.HttpServlet.service(HttpServlet.java:621) at javax.servlet.http.HttpServlet.service(HttpServlet.java:722) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) at com.ezdata.web.filter.ReportFilter.doFilter(ReportFilter.java:142) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) at com.ezdata.web.framework.session.SessionFilter$2.exec(SessionFilter.java:239) at com.ezdata.base.resource.ResourceManager.run(ResourceManager.java:184) at com.ezdata.web.framework.session.SessionFilter.doFilter(SessionFilter.java:207) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) at com.ezdata.web.filter.CheckReclick.processRequest(CheckReclick.java:91) at com.ezdata.web.filter.CheckReclickFilter.processFilter(CheckReclickFilter.java:31) at com.ezdata.web.filter.AbstractFilter.doFilter(AbstractFilter.java:46) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) at com.ezdata.smartoffice.session.SSOLoginFilter.doFilter(SSOLoginFilter.java:175) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) at com.ezdata.web.filter.GZIPFilter.doFilter(GZIPFilter.java:46) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:168) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99) at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:929) at org.apache.catalina.authenticator.SingleSignOn.invoke(SingleSignOn.java:309) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407) at org.apache.coyote.ajp.AjpProcessor.process(AjpProcessor.java:200) at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:585) at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:310) - locked <0x00007f38198b2788> (a org.apache.tomcat.util.net.SocketWrapper) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908) at java.lang.Thread.run(Thread.java:619)
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