The environment is: - the jam vm version is JamVM 1.5.3 - GNU Classpath version is 0.98 - the GNU Classpath is build by disabling the following things as they are not required by us: . /configure --disable-gtk-peer --disable-plugin --disable-gconf-peer --enable-tools - we are running jetty 6.1.8 using the jam vm. - we are connecting to the jetty (which is running on jamvm), through the browser (IE7) on port 8080, but there is no response from the server. - Our code runs fine when it is running jetty on sun jre 1.5. So it is certain that the problem is with the jamvm - the linux platform is: debian - After some analysis, it seems that there is some bug in the socket library of GNU Classpath due to which it stops responding after running for sometime. The exceptions are: java.lang.IllegalArgumentException: channel already registered at gnu.java.nio.EpollSelectorImpl.register(EpollSelectorImpl.java:266) at java.nio.channels.spi.AbstractSelectableChannel.register(AbstractSelectableChannel.java:251) at java.nio.channels.SelectableChannel.register(SelectableChannel.java:114) at org.mortbay.io.nio.SelectorManager$SelectSet.doSelect(SelectorManager.java:488) at org.mortbay.io.nio.SelectorManager.doSelect(SelectorManager.java:166) at org.mortbay.jetty.nio.SelectChannelConnector.accept(SelectChannelConnector.java:124) at org.mortbay.jetty.AbstractConnector$Acceptor.run(AbstractConnector.java:537) at org.mortbay.thread.BoundedThreadPool$PoolThread.run(BoundedThreadPool.java:450) java.nio.channels.NotYetConnectedException at gnu.java.nio.SocketChannelImpl.write(SocketChannelImpl.java:240) at org.mortbay.io.nio.ChannelEndPoint.flush(ChannelEndPoint.java:166) at org.mortbay.io.nio.SelectChannelEndPoint.flush(SelectChannelEndPoint.java:207) at org.mortbay.jetty.HttpGenerator.flush(HttpGenerator.java:693) at org.mortbay.jetty.AbstractGenerator$Output.flush(AbstractGenerator.java:566) at org.mortbay.jetty.HttpConnection$Output.flush(HttpConnection.java:910) at org.mortbay.jetty.AbstractGenerator$OutputWriter.flush(AbstractGenerator.java:731) at java.io.PrintWriter.flush(PrintWriter.java:244) at org.apache.jasper.runtime.JspWriterImpl.flush(JspWriterImpl.java:221) at org.apache.jasper.runtime.JspRuntimeLibrary.include(JspRuntimeLibrary.java:985) at org.apache.jasper.runtime.PageContextImpl.include(PageContextImpl.java:671) at org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContextImpl.java:884) at org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:855) at org.apache.jsp.template_jsp._jspService(org.apache.jsp.template_jsp:135) at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:93) at javax.servlet.http.HttpServlet.service(HttpServlet.java:820) at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:373) at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:470) at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:364) at javax.servlet.http.HttpServlet.service(HttpServlet.java:820) at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:487) at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:362) at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216) at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:181) at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:726) at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:405) at org.mortbay.jetty.servlet.Dispatcher.forward(Dispatcher.java:285) at org.mortbay.jetty.servlet.Dispatcher.forward(Dispatcher.java:126) at org.apache.struts.action.RequestProcessor.doForward(RequestProcessor.java:1056) at org.apache.struts.tiles.TilesRequestProcessor.doForward(TilesRequestProcessor.java:261) at org.apache.struts.tiles.TilesRequestProcessor.processTilesDefinition(TilesRequestProcessor.java:237) at org.apache.struts.tiles.TilesRequestProcessor.processForwardConfig(TilesRequestProcessor.java:300) at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:231) at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1164) at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:397) at com.ipolicynet.dm.common.framework.DmActionServlet.doGet(DmActionServlet.java:151) at javax.servlet.http.HttpServlet.service(HttpServlet.java:707) at javax.servlet.http.HttpServlet.service(HttpServlet.java:820) at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:487) at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:362) at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216) at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:181) at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:726) at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:405) at org.mortbay.jetty.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:206) at org.mortbay.jetty.handler.HandlerCollection.handle(HandlerCollection.java:114) at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152) at org.mortbay.jetty.Server.handle(Server.java:324) at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:505) at org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:828) at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:514) at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:211) at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:380) at org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:395) at org.mortbay.thread.BoundedThreadPool$PoolThread.run(BoundedThreadPool.java:450) java.awt.AWTError: Cannot load AWT toolkit: gnu.java.awt.peer.gtk.GtkToolkit at java.awt.Toolkit.getDefaultToolkit(Toolkit.java:607) at java.awt.Font.tk(Font.java:317) at java.awt.Font.getPeerFromToolkit(Font.java:329) at java.awt.Font.<init>(Font.java:381) at org.jfree.chart.plot.Plot.<init>(Plot.java:296) at org.jfree.chart.plot.dial.DialPlot.<init>(DialPlot.java:150) at org.jfree.chart.plot.dial.DialPlot.<init>(DialPlot.java:142) at com.ipolicynet.dm.monitoring.dashboard.action.DmJfreeImageUtility.drawImage(DmJfreeImageUtility.java:28 at com.ipolicynet.dm.monitoring.dashboard.action.DmMonDashResUsgae.execute(DmMonDashResUsgae.java:59) at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:421) at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:226) at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1164) at org.apache.struts.action.ActionServlet.doGet(ActionServlet.java:397) at com.ipolicynet.dm.common.framework.DmActionServlet.doGet(DmActionServlet.java:151) at javax.servlet.http.HttpServlet.service(HttpServlet.java:707) at javax.servlet.http.HttpServlet.service(HttpServlet.java:820) at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:487) at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:362) at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216) at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:181) at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:726) at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:405) at org.mortbay.jetty.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:206) at org.mortbay.jetty.handler.HandlerCollection.handle(HandlerCollection.java:114) at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152) at org.mortbay.jetty.Server.handle(Server.java:324) at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:505) at org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:828) at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:514) at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:211) at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:380) at org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:395) at org.mortbay.thread.BoundedThreadPool$PoolThread.run(BoundedThreadPool.java:450) Caused by: java.lang.UnsatisfiedLinkError: Native library `gtkpeer' not found (as file `libgtkpeer.so') in gnath at java.lang.Runtime.loadLibrary(Runtime.java:763) at java.lang.System.loadLibrary(System.java:670) at gnu.java.awt.peer.gtk.GtkToolkit.<clinit>(GtkToolkit.java:177) at java.lang.VMClass.forName(Native Method) at java.lang.Class.forName(Class.java:233) at java.awt.Toolkit.getDefaultToolkit(Toolkit.java:583) 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