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Tomcat raises CPU Memory to 100%

 
Greenhorn
Posts: 3
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Dear All,
I am getting the following exception in my application and when this exception occurs tomcat utilize all the CPU memory and machine performance goes down and it shows an "Page not display" message with the following exception

I am downloading some word document's to an IFRAME and using servlet to write an output stream to flush the output. But while opening large documents or while trying to open many documents, i am getting the following issues on my server.

Exception:

ClientAbortException: java.net.SocketException: Connection reset by peer: socket write error
at org.apache.coyote.tomcat5.OutputBuffer.realWriteBytes(OutputBuffer.java:373)
at org.apache.tomcat.util.buf.ByteChunk.append(ByteChunk.java:323)
at org.apache.coyote.tomcat5.OutputBuffer.writeBytes(OutputBuffer.java:401)
at org.apache.coyote.tomcat5.OutputBuffer.write(OutputBuffer.java:388)
at org.apache.coyote.tomcat5.CoyoteOutputStream.write(CoyoteOutputStream.java:76)
at org.apache.coyote.tomcat5.CoyoteOutputStream.write(CoyoteOutputStream.java:70)
at com.wellogic.consult.servlets.DownloadNote.doGet(DownloadNote.java:144)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:689)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:237)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)
at com.wellogic.visage.commons.ctx.ContextFilter.doFilter(ContextFilter.java:62)
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.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)
Apr 28, 2006 9:37:16 AM org.apache.tomcat.util.net.TcpWorkerThread runIt
SEVERE: Remote Host /12.45.242.3 SocketException: Connection reset

Thanks
Lara
 
Author and all-around good cowpoke
Posts: 13078
6
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That simply means that the client closed the connection before the response was written completely. Perhaps you need to catch this exception in doGet and clean up - maybe there are open files or other resources or processes left hanging??
Bill
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