Hi,
We are having hung threads in our JVM logs and these threads are consuming all
the CPU resources. We've to restart the JVMs everytime this issue occur.
Unfortunately we aren't able to reproduce the issue and hence we can't provide
the test case to reproduce. Please see following stack trace copied from JVM
logs:
[8/20/13 10:29:57:982 EDT] 0000001a ThreadMonitor W WSVR0605W: Thread
"Migrated.Servlet.Engine.Transports : 1605" (00000670) has been active for
646127 milliseconds and may be hung. There is/are 1 thread(s) in total in the
server that may be hung.
at org.apache.xml.dtm.ref.DTMDefaultBase.findNamespaceContext(Unknown Source)
at org.apache.xml.dtm.ref.DTMDefaultBase.declareNamespaceInContext(Unknown
Source)
at org.apache.xml.dtm.ref.dom2dtm.DOM2DTM.addNode(Unknown Source)
at
org.apache.xml.dtm.ref.dom2dtm.DOM2DTM.processNamespacesAndAttributes(Unknown
Source)
at org.apache.xml.dtm.ref.dom2dtm.DOM2DTM.nextNode(Unknown Source)
at org.apache.xml.dtm.ref.DTMDefaultBase._nextsib(Unknown Source)
at org.apache.xml.dtm.ref.DTMDefaultBase.getNextSibling(Unknown Source)
at org.apache.xml.dtm.ref.DTMDefaultBaseTraversers$ChildTraverser.next(Unknown
Source)
at org.apache.xpath.axes.AxesWalker.getNextNode(Unknown Source)
at org.apache.xpath.axes.AxesWalker.nextNode(Unknown Source)
at org.apache.xpath.axes.WalkingIterator.nextNode(Unknown Source)
at org.apache.xpath.axes.NodeSequence.nextNode(Unknown Source)
at org.apache.xpath.axes.NodeSequence.runTo(Unknown Source)
at org.apache.xpath.axes.NodeSequence.setRoot(Unknown Source)
at org.apache.xpath.axes.LocPathIterator.execute(Unknown Source)
at org.apache.xpath.XPath.execute(Unknown Source)
at org.apache.xpath.jaxp.XPathExpressionImpl.evaluate(Unknown Source)
at our code reference
at
com.ibm._jsp._GetCustomerViewExclusionDetails._jspService(_GetCustomerViewExclusionDetails.java:152)
at com.ibm.ws.jsp.runtime.HttpJspBase.service(HttpJspBase.java:98)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:831)
at
com.ibm.ws.webcontainer.servlet.ServletWrapper.service(ServletWrapper.java:1655)
at
com.ibm.ws.webcontainer.servlet.ServletWrapper.service(ServletWrapper.java:1595)
at
com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:131)
at com.savvion.sbm.websecurity.xss.filter.XSSFilter.doFilter(Unknown Source)
at
com.ibm.ws.webcontainer.filter.FilterInstanceWrapper.doFilter(FilterInstanceWrapper.java:188)
at
com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:116)
at com.savvion.sbm.bpmportal.util.GZIPFilter.doFilter(Unknown Source)
at
com.ibm.ws.webcontainer.filter.FilterInstanceWrapper.doFilter(FilterInstanceWrapper.java:188)
at
com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:116)
at com.savvion.sbm.bpmportal.util.EncodingFilter.doFilter(Unknown Source)
at
com.ibm.ws.webcontainer.filter.FilterInstanceWrapper.doFilter(FilterInstanceWrapper.java:188)
at
com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:116)
at
com.ibm.ws.webcontainer.filter.WebAppFilterChain._doFilter(WebAppFilterChain.java:77)
at
com.ibm.ws.webcontainer.filter.WebAppFilterManager.doFilter(WebAppFilterManager.java:908)
at
com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:932)
at
com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:500)
at
com.ibm.ws.webcontainer.servlet.ServletWrapperImpl.handleRequest(ServletWrapperImpl.java:178)
at
com.ibm.wsspi.webcontainer.servlet.GenericServletWrapper.handleRequest(GenericServletWrapper.java:121)
at
com.ibm.ws.jsp.webcontainerext.AbstractJSPExtensionServletWrapper.handleRequest(AbstractJSPExtensionServletWrapper.java:239)
at
com.ibm.ws.webcontainer.servlet.CacheServletWrapper.handleRequest(CacheServletWrapper.java:91)
at com.ibm.ws.webcontainer.WebContainer.handleRequest(WebContainer.java:864)
at
com.ibm.ws.webcontainer.WSWebContainer.handleRequest(WSWebContainer.java:1583)
at com.ibm.ws.webcontainer.channel.WCChannelLink.ready(WCChannelLink.java:186)
at
com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleDiscrimination(HttpInboundLink.java:455)
at
com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleNewInformation(HttpInboundLink.java:384)
at
com.ibm.ws.http.channel.inbound.impl.HttpICLReadCallback.complete(HttpICLReadCallback.java:83)
at
com.ibm.ws.tcp.channel.impl.AioReadCompletionListener.futureCompleted(AioReadCompletionListener.java:165)
at
com.ibm.io.async.AbstractAsyncFuture.invokeCallback(AbstractAsyncFuture.java:217)
at
com.ibm.io.async.AsyncChannelFuture.fireCompletionActions(AsyncChannelFuture.java:161)
at com.ibm.io.async.AsyncFuture.completed(AsyncFuture.java:138)
at com.ibm.io.async.ResultHandler.complete(ResultHandler.java:204)
at com.ibm.io.async.ResultHandler.runEventProcessingLoop(ResultHandler.java:775)
at com.ibm.io.async.ResultHandler$2.run(ResultHandler.java:905)
at com.ibm.ws.util.ThreadPool$Worker.run(ThreadPool.java:1550)
Regards,
Numan Ilyas
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