DO NOT REPLY [Bug 51189] New: Acceptor threads are blocked
https://issues.apache.org/bugzilla/show_bug.cgi?id=51189 Bug #: 51189 Summary: Acceptor threads are blocked Product: Tomcat 7 Version: 7.0.11 Platform: All OS/Version: Linux Status: NEW Severity: blocker Priority: P2 Component: Connectors AssignedTo: dev@tomcat.apache.org ReportedBy: helinxi...@gmail.com Classification: Unclassified Hi, I deployed an web application on tomcat 7.0.11, it got acceptor threads blocked when it ran two weeks, and the mysql connections weren't released, I guess they are the same problem. I don't whether it is a bug of JIoEndpoint. Thanks a lot. EastMountain Thread dump below: http-bio-8080-Acceptor-3 daemon prio=10 tid=0x2aaab4148000 nid=0x141d waiting for monitor entry [0x419ac000] java.lang.Thread.State: BLOCKED (on object monitor) at java.net.PlainSocketImpl.accept(PlainSocketImpl.java:388) - waiting to lock 0x2abd72beb518 (a java.net.SocksSocketImpl) at java.net.ServerSocket.implAccept(ServerSocket.java:453) at java.net.ServerSocket.accept(ServerSocket.java:421) at org.apache.tomcat.util.net.DefaultServerSocketFactory.acceptSocket(DefaultServerSocketFactory.java:59) at org.apache.tomcat.util.net.JIoEndpoint$Acceptor.run(JIoEndpoint.java:211) at java.lang.Thread.run(Thread.java:619) http-bio-8080-Acceptor-2 daemon prio=10 tid=0x2aaab4898800 nid=0x141c runnable [0x411af000] java.lang.Thread.State: RUNNABLE at java.net.PlainSocketImpl.socketAccept(Native Method) at java.net.PlainSocketImpl.accept(PlainSocketImpl.java:390) - locked 0x2abd72beb518 (a java.net.SocksSocketImpl) at java.net.ServerSocket.implAccept(ServerSocket.java:453) at java.net.ServerSocket.accept(ServerSocket.java:421) at org.apache.tomcat.util.net.DefaultServerSocketFactory.acceptSocket(DefaultServerSocketFactory.java:59) at org.apache.tomcat.util.net.JIoEndpoint$Acceptor.run(JIoEndpoint.java:211) at java.lang.Thread.run(Thread.java:619) http-bio-8080-Acceptor-1 daemon prio=10 tid=0x2aaab45a4800 nid=0x141b waiting for monitor entry [0x4193] java.lang.Thread.State: BLOCKED (on object monitor) at java.net.PlainSocketImpl.accept(PlainSocketImpl.java:388) - waiting to lock 0x2abd72beb518 (a java.net.SocksSocketImpl) at java.net.ServerSocket.implAccept(ServerSocket.java:453) at java.net.ServerSocket.accept(ServerSocket.java:421) at org.apache.tomcat.util.net.DefaultServerSocketFactory.acceptSocket(DefaultServerSocketFactory.java:59) at org.apache.tomcat.util.net.JIoEndpoint$Acceptor.run(JIoEndpoint.java:211) at java.lang.Thread.run(Thread.java:619) http-bio-8080-Acceptor-0 daemon prio=10 tid=0x2aaab48a7800 nid=0x141a waiting for monitor entry [0x4116e000] java.lang.Thread.State: BLOCKED (on object monitor) at java.net.PlainSocketImpl.accept(PlainSocketImpl.java:388) - waiting to lock 0x2abd72beb518 (a java.net.SocksSocketImpl) at java.net.ServerSocket.implAccept(ServerSocket.java:453) at java.net.ServerSocket.accept(ServerSocket.java:421) at org.apache.tomcat.util.net.DefaultServerSocketFactory.acceptSocket(DefaultServerSocketFactory.java:59) at org.apache.tomcat.util.net.JIoEndpoint$Acceptor.run(JIoEndpoint.java:211) at java.lang.Thread.run(Thread.java:619) -- Configure bugmail: https://issues.apache.org/bugzilla/userprefs.cgi?tab=email --- You are receiving this mail because: --- You are the assignee for the bug. - To unsubscribe, e-mail: dev-unsubscr...@tomcat.apache.org For additional commands, e-mail: dev-h...@tomcat.apache.org
Re: DO NOT REPLY [Bug 51189] New: Acceptor threads are blocked
on most OS:es there is a single lock for accepting new connections, so a better default is 1 for acceptor thread count. there is no performance gain in multiple threads, none that I was ever able to detect. Filip On 5/12/2011 2:32 AM, bugzi...@apache.org wrote: https://issues.apache.org/bugzilla/show_bug.cgi?id=51189 Bug #: 51189 Summary: Acceptor threads are blocked Product: Tomcat 7 Version: 7.0.11 Platform: All OS/Version: Linux Status: NEW Severity: blocker Priority: P2 Component: Connectors AssignedTo: dev@tomcat.apache.org ReportedBy: helinxi...@gmail.com Classification: Unclassified Hi, I deployed an web application on tomcat 7.0.11, it got acceptor threads blocked when it ran two weeks, and the mysql connections weren't released, I guess they are the same problem. I don't whether it is a bug of JIoEndpoint. Thanks a lot. EastMountain Thread dump below: http-bio-8080-Acceptor-3 daemon prio=10 tid=0x2aaab4148000 nid=0x141d waiting for monitor entry [0x419ac000] java.lang.Thread.State: BLOCKED (on object monitor) at java.net.PlainSocketImpl.accept(PlainSocketImpl.java:388) - waiting to lock0x2abd72beb518 (a java.net.SocksSocketImpl) at java.net.ServerSocket.implAccept(ServerSocket.java:453) at java.net.ServerSocket.accept(ServerSocket.java:421) at org.apache.tomcat.util.net.DefaultServerSocketFactory.acceptSocket(DefaultServerSocketFactory.java:59) at org.apache.tomcat.util.net.JIoEndpoint$Acceptor.run(JIoEndpoint.java:211) at java.lang.Thread.run(Thread.java:619) http-bio-8080-Acceptor-2 daemon prio=10 tid=0x2aaab4898800 nid=0x141c runnable [0x411af000] java.lang.Thread.State: RUNNABLE at java.net.PlainSocketImpl.socketAccept(Native Method) at java.net.PlainSocketImpl.accept(PlainSocketImpl.java:390) - locked0x2abd72beb518 (a java.net.SocksSocketImpl) at java.net.ServerSocket.implAccept(ServerSocket.java:453) at java.net.ServerSocket.accept(ServerSocket.java:421) at org.apache.tomcat.util.net.DefaultServerSocketFactory.acceptSocket(DefaultServerSocketFactory.java:59) at org.apache.tomcat.util.net.JIoEndpoint$Acceptor.run(JIoEndpoint.java:211) at java.lang.Thread.run(Thread.java:619) http-bio-8080-Acceptor-1 daemon prio=10 tid=0x2aaab45a4800 nid=0x141b waiting for monitor entry [0x4193] java.lang.Thread.State: BLOCKED (on object monitor) at java.net.PlainSocketImpl.accept(PlainSocketImpl.java:388) - waiting to lock0x2abd72beb518 (a java.net.SocksSocketImpl) at java.net.ServerSocket.implAccept(ServerSocket.java:453) at java.net.ServerSocket.accept(ServerSocket.java:421) at org.apache.tomcat.util.net.DefaultServerSocketFactory.acceptSocket(DefaultServerSocketFactory.java:59) at org.apache.tomcat.util.net.JIoEndpoint$Acceptor.run(JIoEndpoint.java:211) at java.lang.Thread.run(Thread.java:619) http-bio-8080-Acceptor-0 daemon prio=10 tid=0x2aaab48a7800 nid=0x141a waiting for monitor entry [0x4116e000] java.lang.Thread.State: BLOCKED (on object monitor) at java.net.PlainSocketImpl.accept(PlainSocketImpl.java:388) - waiting to lock0x2abd72beb518 (a java.net.SocksSocketImpl) at java.net.ServerSocket.implAccept(ServerSocket.java:453) at java.net.ServerSocket.accept(ServerSocket.java:421) at org.apache.tomcat.util.net.DefaultServerSocketFactory.acceptSocket(DefaultServerSocketFactory.java:59) at org.apache.tomcat.util.net.JIoEndpoint$Acceptor.run(JIoEndpoint.java:211) at java.lang.Thread.run(Thread.java:619) - To unsubscribe, e-mail: dev-unsubscr...@tomcat.apache.org For additional commands, e-mail: dev-h...@tomcat.apache.org
