Hi all, We are currently running FOP in a batch environment on Websphere 5.1. Are experiencing a performance lag while processing higher volume of documents. A brief explanation of the process : 'n' number of XML's are concatenated into 1 PDF file. I use page-sequencing to create the output PDF. Whats happening is that the larger the 'n', the process becomes very slower. For e.g, for 200 xml's the PDF was created in approx 4 minutes, but, if I increased it to 500, it almost took an hour to create the PDF. I took threaddumps and I found that the process stalls at a certain method call - org.apache.xml.dtm.ref.DTMDefaultBaseTraversers$DescendantTraverser.next (DTMDefaultBaseTraversers.java(Compiled Code)). Below is the relevant portion of the dump: 3XMTHREADINFO "MessageListenerThreadPool : 1" (TID:0x1061D250, sys_thread_t:0x53985C38, state:R, native ID:0x1324) prio=5 4XESTACKTRACE at org.apache.xml.dtm.ref.DTMDefaultBaseTraversers$DescendantTraverser.next (DTMDefaultBaseTraversers.java(Compiled Code)) 4XESTACKTRACE at org.apache.xpath.axes.AxesWalker.getNextNode(AxesWalker.java(Compiled Code)) 4XESTACKTRACE at org.apache.xpath.axes.AxesWalker.nextNode(AxesWalker.java(Compiled Code)) 4XESTACKTRACE at org.apache.xpath.axes.WalkingIterator.nextNode (WalkingIterator.java(Compiled Code)) 4XESTACKTRACE at org.apache.xpath.axes.NodeSequence.nextNode(NodeSequence.java(Compiled Code)) 4XESTACKTRACE at org.apache.xpath.axes.NodeSequence.runTo(NodeSequence.java(Compiled Code)) 4XESTACKTRACE at org.apache.xpath.axes.NodeSequence.setRoot(NodeSequence.java(Compiled Code)) 4XESTACKTRACE at org.apache.xpath.axes.LocPathIterator.execute(LocPathIterator.java (Compiled Code)) 4XESTACKTRACE at org.apache.xpath.objects.XRTreeFragSelectWrapper.execute (XRTreeFragSelectWrapper.java(Compiled Code)) 4XESTACKTRACE at org.apache.xpath.XPath.execute(XPath.java(Compiled Code)) 4XESTACKTRACE at org.apache.xalan.templates.ElemWithParam.getValue(ElemWithParam.java (Compiled Code)) 4XESTACKTRACE at org.apache.xalan.templates.ElemCallTemplate.execute(ElemCallTemplate.java (CompiledCode)) 4XESTACKTRACE at org.apache.xalan.transformer.TransformerImpl.executeChildTemplates (TransformerImpl.java(Compiled Code)) 4XESTACKTRACE at org.apache.xalan.templates.ElemChoose.execute(ElemChoose.java(Compiled Code)) 4XESTACKTRACE at org.apache.xalan.transformer.TransformerImpl.executeChildTemplates (TransformerImpl.java(Compiled Code)) 4XESTACKTRACE at org.apache.xalan.templates.ElemTemplate.execute(ElemTemplate.java (Compiled Code)) 4XESTACKTRACE at org.apache.xalan.templates.ElemCallTemplate.execute(ElemCallTemplate.java (CompiledCode)) 4XESTACKTRACE at org.apache.xalan.transformer.TransformerImpl.executeChildTemplates (TransformerImpl.java(Compiled Code)) 4XESTACKTRACE at org.apache.xalan.templates.ElemChoose.execute(ElemChoose.java(Compiled Code)) 4XESTACKTRACE at org.apache.xalan.transformer.TransformerImpl.executeChildTemplates (TransformerImpl.java(Compiled Code)) 4XESTACKTRACE at org.apache.xalan.templates.ElemTemplate.execute(ElemTemplate.java (Compiled Code)) 4XESTACKTRACE at org.apache.xalan.templates.ElemCallTemplate.execute(ElemCallTemplate.java (CompiledCode)) 4XESTACKTRACE at org.apache.xalan.transformer.TransformerImpl.executeChildTemplates (TransformerImpl.java(Compiled Code)) 4XESTACKTRACE at org.apache.xalan.templates.ElemLiteralResult.execute(ElemLiteralResult.java (CompiledCode)) 4XESTACKTRACE at org.apache.xalan.templates.ElemForEach.transformSelectedNodes(ElemForEach.java (Compiled Code)) 4XESTACKTRACE at org.apache.xalan.templates.ElemForEach.execute(ElemForEach.java(Compiled Code)) 4XESTACKTRACE at org.apache.xalan.transformer.TransformerImpl.executeChildTemplates (TransformerImpl.java(Compiled Code)) 4XESTACKTRACE at org.apache.xalan.templates.ElemLiteralResult.execute(ElemLiteralResult.java (CompiledCode)) 4XESTACKTRACE at org.apache.xalan.transformer.TransformerImpl.executeChildTemplates (TransformerImpl.java(Compiled Code)) 4XESTACKTRACE at org.apache.xalan.templates.ElemLiteralResult.execute(ElemLiteralResult.java (CompiledCode)) 4XESTACKTRACE at org.apache.xalan.templates.ElemApplyTemplates.transformSelectedNodes (ElemApplyTemplates.java (Compiled Code)) 4XESTACKTRACE at org.apache.xalan.templates.ElemApplyTemplates.execute(ElemApplyTemplates.java (Compiled Code)) 4XESTACKTRACE at org.apache.xalan.transformer.TransformerImpl.executeChildTemplates (TransformerImpl.java(Compiled Code)) 4XESTACKTRACE at org.apache.xalan.templates.ElemLiteralResult.execute(ElemLiteralResult.java (CompiledCode)) 4XESTACKTRACE at org.apache.xalan.transformer.TransformerImpl.executeChildTemplates (TransformerImpl.java(Compiled Code)) 4XESTACKTRACE at org.apache.xalan.templates.ElemLiteralResult.execute(ElemLiteralResult.java (CompiledCode)) 4XESTACKTRACE at org.apache.xalan.transformer.TransformerImpl.executeChildTemplates (TransformerImpl.java(Compiled Code)) 4XESTACKTRACE at org.apache.xalan.templates.ElemTemplate.execute(ElemTemplate.java (Compiled Code)) 4XESTACKTRACE at org.apache.xalan.templates.ElemCallTemplate.execute(ElemCallTemplate.java (CompiledCode)) 4XESTACKTRACE at org.apache.xalan.templates.ElemForEach.transformSelectedNodes(ElemForEach.java (Compiled Code)) 4XESTACKTRACE at org.apache.xalan.templates.ElemForEach.execute(ElemForEach.java(Compiled Code)) 4XESTACKTRACE at org.apache.xalan.transformer.TransformerImpl.executeChildTemplates (TransformerImpl.java(Compiled Code)) 4XESTACKTRACE at org.apache.xalan.templates.ElemLiteralResult.execute(ElemLiteralResult.java (CompiledCode)) 4XESTACKTRACE at org.apache.xalan.transformer.TransformerImpl.executeChildTemplates (TransformerImpl.java(Compiled Code)) 4XESTACKTRACE at org.apache.xalan.transformer.TransformerImpl.applyTemplateToNode (TransformerImpl.java(Compiled Code)) 4XESTACKTRACE at org.apache.xalan.transformer.TransformerImpl.transformNode (TransformerImpl.java(Compiled Code)) 4XESTACKTRACE at org.apache.xalan.transformer.TransformerImpl.transform(TransformerImpl.java (CompiledCode)) 4XESTACKTRACE at org.apache.xalan.transformer.TransformerImpl.transform(TransformerImpl.java (CompiledCode)) 4XESTACKTRACE at org.apache.xalan.transformer.TransformerImpl.transform(TransformerImpl.java (CompiledCode)) I'm kind of cluless as to what could be the reason for the problem.
Appreciate any help and inputs/pointers. I am at fop-0.92beta. Thanks Karthik --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
