On 5 Jun 2010, at 04:33, "ago...@libero.it" <ago...@libero.it> wrote:
> Hi > I m very tired because the intermittent socket close exception > reappear. > > We now use tomcat 5.5.28 on win2003 ED SO and jdk 1.6.16. > The error that occours is: > > 4-giu-2010 7.48.35 What is the above? It doesn't look familiar to me. Can you refresh our memories and please post the current server.xml (comments removed)? p > org.apache.tomcat.util.net.PoolTcpEndpoint acceptSocket > GRAVE: Endpoint ServerSocket > [addr=0.0.0.0/0.0.0.0,port=0,localport=8080] > ignored exception: java.net.SocketException: socket closed > java.net.SocketException: socket closed > at java.net.PlainSocketImpl.socketAccept(Native Method) > at java.net.PlainSocketImpl.accept(Unknown Source) > at java.net.ServerSocket.implAccept(Unknown Source) > at java.net.ServerSocket.accept(Unknown Source) > at > org.apache.tomcat.util.net.DefaultServerSocketFactory.acceptSocket > (DefaultServerSocketFactory.java:61) > at org.apache.tomcat.util.net.PoolTcpEndpoint.acceptSocket > (PoolTcpEndpoint. > java:408) > at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt > (LeaderFollowerWorkerThread.java:71) > at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run > (ThreadPool. > java:689) > at java.lang.Thread.run(Unknown Source) > 4-giu-2010 7.48.56 org.apache.tomcat.util.net.PoolTcpEndpoint > acceptSocket > AVVERTENZA: Reinitializing ServerSocket > 4-giu-2010 8.04.39 org.apache.tomcat.util.net.PoolTcpEndpoint > acceptSocket > GRAVE: Endpoint ServerSocket > [addr=0.0.0.0/0.0.0.0,port=0,localport=8080] > ignored exception: java.net.SocketException: socket closed > java.net.SocketException: socket closed > at java.net.PlainSocketImpl.socketAccept(Native Method) > at java.net.PlainSocketImpl.accept(Unknown Source) > at java.net.ServerSocket.implAccept(Unknown Source) > at java.net.ServerSocket.accept(Unknown Source) > at > org.apache.tomcat.util.net.DefaultServerSocketFactory.acceptSocket > (DefaultServerSocketFactory.java:61) > at org.apache.tomcat.util.net.PoolTcpEndpoint.acceptSocket > (PoolTcpEndpoint. > java:408) > at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt > (LeaderFollowerWorkerThread.java:71) > at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run > (ThreadPool. > java:689) > at java.lang.Thread.run(Unknown Source) > 4-giu-2010 8.05.00 org.apache.tomcat.util.net.PoolTcpEndpoint > acceptSocket > AVVERTENZA: Reinitializing ServerSocket > 4-giu-2010 8.05.00 org.apache.tomcat.util.net.PoolTcpEndpoint > acceptSocket > GRAVE: Endpoint ServerSocket > [addr=0.0.0.0/0.0.0.0,port=0,localport=8080] > ignored exception: java.net.SocketException: socket closed > java.net.SocketException: socket closed > at java.net.PlainSocketImpl.socketAccept(Native Method) > at java.net.PlainSocketImpl.accept(Unknown Source) > at java.net.ServerSocket.implAccept(Unknown Source) > at java.net.ServerSocket.accept(Unknown Source) > at > org.apache.tomcat.util.net.DefaultServerSocketFactory.acceptSocket > (DefaultServerSocketFactory.java:61) > at org.apache.tomcat.util.net.PoolTcpEndpoint.acceptSocket > (PoolTcpEndpoint. > java:408) > at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt > (LeaderFollowerWorkerThread.java:71) > at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run > (ThreadPool. > java:689) > at java.lang.Thread.run(Unknown Source) > 4-giu-2010 8.05.21 org.apache.tomcat.util.net.PoolTcpEndpoint > acceptSocket > AVVERTENZA: Reinitializing ServerSocket > 4-giu-2010 8.06.55 org.apache.tomcat.util.net.PoolTcpEndpoint > acceptSocket > GRAVE: Endpoint ServerSocket > [addr=0.0.0.0/0.0.0.0,port=0,localport=8080] > ignored exception: java.net.SocketException: socket closed > java.net.SocketException: socket closed > at java.net.PlainSocketImpl.socketAccept(Native Method) ..... > > This error slow down the application. > > we don't have firewall, pool of tcp connection seem correct, the > processor > and memory usage are normal (10% CPU and 50% RAM). > > > How can i investigte who cuse the problem? Jconsole observe memory > but seem > not tcp connection. > How can i understand why i have close socket? > whath are flakey router error? > How can i understand if i have saturate the connection on SO? > > Thank for all suggest > Best regards > Agostino > > > > >> ----Messaggio originale---- >> Da: chuck.caldar...@unisys.com >> Data: 24/05/2010 15.38 >> A: "Tomcat Users List"<users@tomcat.apache.org>, "ago...@libero.it" > <ago...@libero.it> >> Ogg: RE: Re: intermittent SocketException on startup tomcat 5.5.28 >> and under > JBOSS 4.2.3GA >> >>> From: ago...@libero.it [mailto:ago...@libero.it] >>> Subject: R: Re: intermittent SocketException on startup tomcat >>> 5.5.28 >>> and under JBOSS 4.2.3GA >>> >>> ERROR [org.apache.tomcat.util.net.JIoEndpoint] >>> Socket accept failed >>> java.net.SocketException: socket closed >> >> This isn't really a problem with the Tomcat server - it usually >> means the > client terminated the connection attempt before the socket on the > server end > could be created. If this is happening persistently, then something > in between > the client and Tomcat (e.g., a firewall or flakey router) is > dropping the > connection before it can be fully established. There's also a > possibility that > Windows is reaching some resource limit and preventing creation of > the server > end of the connection. >> >> - Chuck >> >> >> THIS COMMUNICATION MAY CONTAIN CONFIDENTIAL AND/OR OTHERWISE >> PROPRIETARY > MATERIAL and is thus for use only by the intended recipient. If you > received > this in error, please contact the sender and delete the e-mail and its > attachments from all computers. >> >> > > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org > For additional commands, e-mail: users-h...@tomcat.apache.org > --------------------------------------------------------------------- To unsubscribe, e-mail: users-unsubscr...@tomcat.apache.org For additional commands, e-mail: users-h...@tomcat.apache.org
