[logback-dev] [JIRA] Commented: (LBCORE-96) Deadlock when running on multiple core processors

Ralph Goers (JIRA) noreply-jira at qos.ch
Mon Apr 6 15:44:11 CEST 2009


    [ http://jira.qos.ch/browse/LBCORE-96?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=11104#action_11104 ] 

Ralph Goers commented on LBCORE-96:
-----------------------------------

The attached thread dump does NOT show a deadlock. Thread http-8084-1 is running. This thread dump does show the contention over the appender lock. This issue is a duplicate of LBCORE-62.

> Deadlock when running on multiple core processors
> -------------------------------------------------
>
>                 Key: LBCORE-96
>                 URL: http://jira.qos.ch/browse/LBCORE-96
>             Project: logback-core
>          Issue Type: Bug
>          Components: Appender
>    Affects Versions: 0.9.15
>         Environment: Windows Vista
> quad core
> Apache Tomcat 6.0.18
> JDK 1.6
>            Reporter: Lars Feistner
>            Assignee: Logback dev list
>
> As Robert Dale mentioned on  23/Mar/09 04:05 PM
> I'm getting that deadlock in logback core (0.9.14 and 0.9.15). No console plugin or socket appenders, just plain RollingFileAppender.
> I am getting the deadlock using ConsoleAppender.
> see attached thread dump:
> 2009-04-06 11:49:45
> Full thread dump Java HotSpot(TM) Client VM (11.0-b12 mixed mode, sharing):
> "http-8084-5" daemon prio=6 tid=0x04700c00 nid=0xc54 in Object.wait() [0x05d1f000..0x05d1fc68]
>    java.lang.Thread.State: WAITING (on object monitor)
> 	at java.lang.Object.wait(Native Method)
> 	- waiting on <0x24338c70> (a org.apache.tomcat.util.net.JIoEndpoint$Worker)
> 	at java.lang.Object.wait(Object.java:485)
> 	at org.apache.tomcat.util.net.JIoEndpoint$Worker.await(JIoEndpoint.java:416)
> 	- locked <0x24338c70> (a org.apache.tomcat.util.net.JIoEndpoint$Worker)
> 	at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:442)
> 	at java.lang.Thread.run(Thread.java:619)
> "http-8084-4" daemon prio=6 tid=0x04700000 nid=0xe24 in Object.wait() [0x05c7f000..0x05c7fbe8]
>    java.lang.Thread.State: WAITING (on object monitor)
> 	at java.lang.Object.wait(Native Method)
> 	- waiting on <0x24254da8> (a org.apache.tomcat.util.net.JIoEndpoint$Worker)
> 	at java.lang.Object.wait(Object.java:485)
> 	at org.apache.tomcat.util.net.JIoEndpoint$Worker.await(JIoEndpoint.java:416)
> 	- locked <0x24254da8> (a org.apache.tomcat.util.net.JIoEndpoint$Worker)
> 	at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:442)
> 	at java.lang.Thread.run(Thread.java:619)
> "http-8084-3" daemon prio=6 tid=0x04700400 nid=0x134c waiting for monitor entry [0x05c2f000..0x05c2fa68]
>    java.lang.Thread.State: BLOCKED (on object monitor)
> 	at ch.qos.logback.core.AppenderBase.doAppend(AppenderBase.java:66)
> 	- waiting to lock <0x23b16ac8> (a ch.qos.logback.core.ConsoleAppender)
> 	at ch.qos.logback.core.spi.AppenderAttachableImpl.appendLoopOnAppenders(AppenderAttachableImpl.java:60)
> 	at ch.qos.logback.classic.Logger.appendLoopOnAppenders(Logger.java:270)
> 	at ch.qos.logback.classic.Logger.callAppenders(Logger.java:257)
> 	at ch.qos.logback.classic.Logger.buildLoggingEventAndAppend(Logger.java:439)
> 	at ch.qos.logback.classic.Logger.filterAndLog_1(Logger.java:411)
> 	at ch.qos.logback.classic.Logger.debug(Logger.java:504)
> 	at de.ims.server.jguard.ImsRemoteServiceServlet.processCall(ImsRemoteServiceServlet.java:88)
> 	at com.google.gwt.user.server.rpc.RemoteServiceServlet.doPost(RemoteServiceServlet.java:86)
> 	at javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
> 	at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
> 	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
> 	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
> 	at org.netbeans.modules.web.monitor.server.MonitorFilter.doFilter(MonitorFilter.java:390)
> 	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
> 	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
> 	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
> 	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
> 	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
> 	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
> 	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
> 	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:286)
> 	at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:845)
> 	at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
> 	at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
> 	at java.lang.Thread.run(Thread.java:619)
> "Thread-10" daemon prio=6 tid=0x046ff800 nid=0x122c runnable [0x05bdf000..0x05bdfb68]
>    java.lang.Thread.State: RUNNABLE
> 	at sun.net.dns.ResolverConfigurationImpl.notifyAddrChange0(Native Method)
> 	at sun.net.dns.ResolverConfigurationImpl$AddressChangeListener.run(ResolverConfigurationImpl.java:125)
> "http-8084-2" daemon prio=6 tid=0x046ff400 nid=0x17f4 waiting for monitor entry [0x05b8f000..0x05b8fa68]
>    java.lang.Thread.State: BLOCKED (on object monitor)
> 	at ch.qos.logback.core.AppenderBase.doAppend(AppenderBase.java:66)
> 	- waiting to lock <0x23b16ac8> (a ch.qos.logback.core.ConsoleAppender)
> 	at ch.qos.logback.core.spi.AppenderAttachableImpl.appendLoopOnAppenders(AppenderAttachableImpl.java:60)
> 	at ch.qos.logback.classic.Logger.appendLoopOnAppenders(Logger.java:270)
> 	at ch.qos.logback.classic.Logger.callAppenders(Logger.java:257)
> 	at ch.qos.logback.classic.Logger.buildLoggingEventAndAppend(Logger.java:439)
> 	at ch.qos.logback.classic.Logger.filterAndLog_1(Logger.java:411)
> 	at ch.qos.logback.classic.Logger.debug(Logger.java:504)
> 	at de.ims.server.jguard.ImsRemoteServiceServlet.processCall(ImsRemoteServiceServlet.java:88)
> 	at com.google.gwt.user.server.rpc.RemoteServiceServlet.doPost(RemoteServiceServlet.java:86)
> 	at javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
> 	at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
> 	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
> 	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
> 	at org.netbeans.modules.web.monitor.server.MonitorFilter.doFilter(MonitorFilter.java:390)
> 	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
> 	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
> 	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
> 	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
> 	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
> 	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
> 	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
> 	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:286)
> 	at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:845)
> 	at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
> 	at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
> 	at java.lang.Thread.run(Thread.java:619)
> "TP-Monitor" daemon prio=6 tid=0x04a17400 nid=0x830 in Object.wait() [0x05b3f000..0x05b3fce8]
>    java.lang.Thread.State: TIMED_WAITING (on object monitor)
> 	at java.lang.Object.wait(Native Method)
> 	- waiting on <0x23e0a900> (a org.apache.tomcat.util.threads.ThreadPool$MonitorRunnable)
> 	at org.apache.tomcat.util.threads.ThreadPool$MonitorRunnable.run(ThreadPool.java:565)
> 	- locked <0x23e0a900> (a org.apache.tomcat.util.threads.ThreadPool$MonitorRunnable)
> 	at java.lang.Thread.run(Thread.java:619)
> "TP-Processor4" daemon prio=6 tid=0x0497a000 nid=0x11dc runnable [0x05a8f000..0x05a8fd68]
>    java.lang.Thread.State: RUNNABLE
> 	at java.net.PlainSocketImpl.socketAccept(Native Method)
> 	at java.net.PlainSocketImpl.accept(PlainSocketImpl.java:384)
> 	- locked <0x23e0a9b0> (a java.net.SocksSocketImpl)
> 	at java.net.ServerSocket.implAccept(ServerSocket.java:453)
> 	at java.net.ServerSocket.accept(ServerSocket.java:421)
> 	at org.apache.jk.common.ChannelSocket.accept(ChannelSocket.java:306)
> 	at org.apache.jk.common.ChannelSocket.acceptConnections(ChannelSocket.java:660)
> 	at org.apache.jk.common.ChannelSocket$SocketAcceptor.runIt(ChannelSocket.java:870)
> 	at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:690)
> 	at java.lang.Thread.run(Thread.java:619)
> "TP-Processor3" daemon prio=6 tid=0x04979c00 nid=0xfe8 in Object.wait() [0x05a3f000..0x05a3f9e8]
>    java.lang.Thread.State: WAITING (on object monitor)
> 	at java.lang.Object.wait(Native Method)
> 	- waiting on <0x23e0abc8> (a org.apache.tomcat.util.threads.ThreadPool$ControlRunnable)
> 	at java.lang.Object.wait(Object.java:485)
> 	at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:662)
> 	- locked <0x23e0abc8> (a org.apache.tomcat.util.threads.ThreadPool$ControlRunnable)
> 	at java.lang.Thread.run(Thread.java:619)
> "TP-Processor2" daemon prio=6 tid=0x04982800 nid=0x10bc in Object.wait() [0x059ef000..0x059efa68]
>    java.lang.Thread.State: WAITING (on object monitor)
> 	at java.lang.Object.wait(Native Method)
> 	- waiting on <0x23e0ac68> (a org.apache.tomcat.util.threads.ThreadPool$ControlRunnable)
> 	at java.lang.Object.wait(Object.java:485)
> 	at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:662)
> 	- locked <0x23e0ac68> (a org.apache.tomcat.util.threads.ThreadPool$ControlRunnable)
> 	at java.lang.Thread.run(Thread.java:619)
> "TP-Processor1" daemon prio=6 tid=0x04982000 nid=0x131c in Object.wait() [0x0599f000..0x0599fae8]
>    java.lang.Thread.State: WAITING (on object monitor)
> 	at java.lang.Object.wait(Native Method)
> 	- waiting on <0x23e0ad08> (a org.apache.tomcat.util.threads.ThreadPool$ControlRunnable)
> 	at java.lang.Object.wait(Object.java:485)
> 	at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:662)
> 	- locked <0x23e0ad08> (a org.apache.tomcat.util.threads.ThreadPool$ControlRunnable)
> 	at java.lang.Thread.run(Thread.java:619)
> "http-8084-1" daemon prio=6 tid=0x04917000 nid=0x15f4 runnable [0x0594f000..0x0594fb68]
>    java.lang.Thread.State: RUNNABLE
> 	at java.io.FileOutputStream.writeBytes(Native Method)
> 	at java.io.FileOutputStream.write(FileOutputStream.java:260)
> 	at java.io.BufferedOutputStream.write(BufferedOutputStream.java:105)
> 	- locked <0x2395d280> (a java.io.BufferedOutputStream)
> 	at java.io.PrintStream.write(PrintStream.java:430)
> 	- locked <0x23951d08> (a java.io.PrintStream)
> 	at org.apache.tomcat.util.log.SystemLogHandler.write(SystemLogHandler.java:166)
> 	at sun.nio.cs.StreamEncoder.writeBytes(StreamEncoder.java:202)
> 	at sun.nio.cs.StreamEncoder.implFlushBuffer(StreamEncoder.java:272)
> 	at sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:276)
> 	at sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:122)
> 	- locked <0x23b1c1f0> (a java.io.OutputStreamWriter)
> 	at java.io.OutputStreamWriter.flush(OutputStreamWriter.java:212)
> 	at ch.qos.logback.core.WriterAppender.writerWrite(WriterAppender.java:245)
> 	at ch.qos.logback.core.WriterAppender.subAppend(WriterAppender.java:261)
> 	at ch.qos.logback.core.WriterAppender.append(WriterAppender.java:114)
> 	at ch.qos.logback.core.AppenderBase.doAppend(AppenderBase.java:87)
> 	- locked <0x23b16ac8> (a ch.qos.logback.core.ConsoleAppender)
> 	at ch.qos.logback.core.spi.AppenderAttachableImpl.appendLoopOnAppenders(AppenderAttachableImpl.java:60)
> 	at ch.qos.logback.classic.Logger.appendLoopOnAppenders(Logger.java:270)
> 	at ch.qos.logback.classic.Logger.callAppenders(Logger.java:257)
> 	at ch.qos.logback.classic.Logger.buildLoggingEventAndAppend(Logger.java:439)
> 	at ch.qos.logback.classic.Logger.filterAndLog_1(Logger.java:411)
> 	at ch.qos.logback.classic.Logger.debug(Logger.java:504)
> 	at de.ims.server.jguard.ImsRemoteServiceServlet.processCall(ImsRemoteServiceServlet.java:92)
> 	at com.google.gwt.user.server.rpc.RemoteServiceServlet.doPost(RemoteServiceServlet.java:86)
> 	at javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
> 	at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
> 	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
> 	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
> 	at org.netbeans.modules.web.monitor.server.MonitorFilter.doFilter(MonitorFilter.java:390)
> 	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
> 	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
> 	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
> 	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
> 	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
> 	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
> 	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
> 	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:286)
> 	at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:845)
> 	at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
> 	at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
> 	at java.lang.Thread.run(Thread.java:619)
> "http-8084-Acceptor-0" daemon prio=6 tid=0x049c2400 nid=0x129c runnable [0x058bf000..0x058bfbe8]
>    java.lang.Thread.State: RUNNABLE
> 	at java.net.PlainSocketImpl.socketAccept(Native Method)
> 	at java.net.PlainSocketImpl.accept(PlainSocketImpl.java:384)
> 	- locked <0x23a40168> (a java.net.SocksSocketImpl)
> 	at java.net.ServerSocket.implAccept(ServerSocket.java:453)
> 	at java.net.ServerSocket.accept(ServerSocket.java:421)
> 	at org.apache.tomcat.util.net.DefaultServerSocketFactory.acceptSocket(DefaultServerSocketFactory.java:61)
> 	at org.apache.tomcat.util.net.JIoEndpoint$Acceptor.run(JIoEndpoint.java:310)
> 	at java.lang.Thread.run(Thread.java:619)
> "ContainerBackgroundProcessor[StandardEngine[Catalina]]" daemon prio=6 tid=0x051c9800 nid=0x152c waiting on condition [0x0452f000..0x0452fc68]
>    java.lang.Thread.State: TIMED_WAITING (sleeping)
> 	at java.lang.Thread.sleep(Native Method)
> 	at org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor.run(ContainerBase.java:1579)
> 	at java.lang.Thread.run(Thread.java:619)
> "Thread-1" daemon prio=2 tid=0x04638c00 nid=0x1360 in Object.wait() [0x044df000..0x044dfce8]
>    java.lang.Thread.State: TIMED_WAITING (on object monitor)
> 	at java.lang.Object.wait(Native Method)
> 	- waiting on <0x23b87d30> (a EDU.oswego.cs.dl.util.concurrent.ClockDaemon)
> 	at EDU.oswego.cs.dl.util.concurrent.ClockDaemon.nextTask(ClockDaemon.java:328)
> 	- locked <0x23b87d30> (a EDU.oswego.cs.dl.util.concurrent.ClockDaemon)
> 	at EDU.oswego.cs.dl.util.concurrent.ClockDaemon$RunLoop.run(ClockDaemon.java:362)
> 	at java.lang.Thread.run(Thread.java:619)
> "ElementEventQueue.QProcessor-1" daemon prio=6 tid=0x050f2800 nid=0x17d0 in Object.wait() [0x0442f000..0x0442fd68]
>    java.lang.Thread.State: WAITING (on object monitor)
> 	at java.lang.Object.wait(Native Method)
> 	- waiting on <0x23b81398> (a java.lang.Object)
> 	at java.lang.Object.wait(Object.java:485)
> 	at org.apache.jcs.engine.control.event.ElementEventQueue.take(ElementEventQueue.java:181)
> 	- locked <0x23b81398> (a java.lang.Object)
> 	at org.apache.jcs.engine.control.event.ElementEventQueue.access$300(ElementEventQueue.java:35)
> 	at org.apache.jcs.engine.control.event.ElementEventQueue$QProcessor.run(ElementEventQueue.java:245)
> "Low Memory Detector" daemon prio=6 tid=0x0215c800 nid=0x1370 runnable [0x00000000..0x00000000]
>    java.lang.Thread.State: RUNNABLE
> "CompilerThread0" daemon prio=10 tid=0x02156400 nid=0x758 waiting on condition [0x00000000..0x0433f890]
>    java.lang.Thread.State: RUNNABLE
> "Attach Listener" daemon prio=10 tid=0x02155400 nid=0x14f4 waiting on condition [0x00000000..0x00000000]
>    java.lang.Thread.State: RUNNABLE
> "Signal Dispatcher" daemon prio=10 tid=0x0214ac00 nid=0x151c runnable [0x00000000..0x00000000]
>    java.lang.Thread.State: RUNNABLE
> "Finalizer" daemon prio=8 tid=0x02143000 nid=0x430 in Object.wait() [0x0424f000..0x0424fce8]
>    java.lang.Thread.State: WAITING (on object monitor)
> 	at java.lang.Object.wait(Native Method)
> 	- waiting on <0x2394e760> (a java.lang.ref.ReferenceQueue$Lock)
> 	at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:116)
> 	- locked <0x2394e760> (a java.lang.ref.ReferenceQueue$Lock)
> 	at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:132)
> 	at java.lang.ref.Finalizer$FinalizerThread.run(Finalizer.java:159)
> "Reference Handler" daemon prio=10 tid=0x02141000 nid=0x510 in Object.wait() [0x0091f000..0x0091fc68]
>    java.lang.Thread.State: WAITING (on object monitor)
> 	at java.lang.Object.wait(Native Method)
> 	- waiting on <0x2394e7e8> (a java.lang.ref.Reference$Lock)
> 	at java.lang.Object.wait(Object.java:485)
> 	at java.lang.ref.Reference$ReferenceHandler.run(Reference.java:116)
> 	- locked <0x2394e7e8> (a java.lang.ref.Reference$Lock)
> "main" prio=6 tid=0x0020a800 nid=0xef4 runnable [0x0025f000..0x0025fe28]
>    java.lang.Thread.State: RUNNABLE
> 	at java.net.PlainSocketImpl.socketAccept(Native Method)
> 	at java.net.PlainSocketImpl.accept(PlainSocketImpl.java:384)
> 	- locked <0x23e18dc0> (a java.net.SocksSocketImpl)
> 	at java.net.ServerSocket.implAccept(ServerSocket.java:453)
> 	at java.net.ServerSocket.accept(ServerSocket.java:421)
> 	at org.apache.catalina.core.StandardServer.await(StandardServer.java:389)
> 	at org.apache.catalina.startup.Catalina.await(Catalina.java:642)
> 	at org.apache.catalina.startup.Catalina.start(Catalina.java:602)
> 	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> 	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
> 	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> 	at java.lang.reflect.Method.invoke(Method.java:597)
> 	at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:288)
> 	at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:413)
> "VM Thread" prio=10 tid=0x0213fc00 nid=0xdc0 runnable 
> "VM Periodic Task Thread" prio=10 tid=0x0215dc00 nid=0x1128 waiting on condition 
> JNI global references: 781
> i also attach my logback configuration:
> <?xml version="1.0" encoding="UTF-8"?>
> <configuration debug="true">
> 	<appender name="stdout"
> 		class="ch.qos.logback.core.ConsoleAppender">
> 		<layout class="ch.qos.logback.classic.PatternLayout">
> 			<Pattern>
> 				Operator %X{client}: %d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} %L - %msg%n
> 			</Pattern>
> 		</layout>
> 	</appender>
> 	<!--
> 	<appender name="file"
>         class="ch.qos.logback.core.FileAppender" >
>         <File>imsm-debug.log</File>
>         <Append>false</Append>
>         <layout class="ch.qos.logback.classic.PatternLayout">
>             <Pattern>
>                 %d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} %L - %msg%n
>             </Pattern>
>         </layout>
>     </appender>
> -->
> 	<logger name="net.sf.jguard.core" additivity="false">
> 		<level value="INFO" />
> 		<appender-ref ref="stdout" />
> 		<!--<appender-ref ref="file" />-->
> 	</logger>
> 	<logger name="net.sf.jguard.core.authorization" additivity="false">
> 	   <level value="debug"/>
> 	   <appender-ref ref="stdout" />
>        <!--<appender-ref ref="file" />-->
>     </logger>
>     <logger name="net.sf.jguard.core.filters" additivity="false">
>        <level value="debug"/>
>        <appender-ref ref="stdout" />
>        <!--<appender-ref ref="file" />-->
>     </logger>
> 	<logger name="net.sf.jguard.ext" additivity="false">
> 		<level value="INFO" />
> 		<appender-ref ref="stdout" />
> 		<!--<appender-ref ref="file" />-->
> 	</logger>
> 	<logger name="net.sf.jguard.jee" additivity="false">
> 		<level value="INFO" />
> 		<appender-ref ref="stdout" />
> 		<!--<appender-ref ref="file" />-->
> 	</logger>
> 	<logger name="net.sf.ehcache" additivity="false">
> 		<level value="INFO" />
> 		<appender-ref ref="stdout" />
> 		<!--<appender-ref ref="file" />-->
> 	</logger>
> 	<logger name="de.ims.core.db" additivity="false">
> 		<level value="DEBUG" />
> 		<appender-ref ref="stdout" />
> 		<!--<appender-ref ref="file" />-->
> 	</logger>
>     <logger name="de.ims.core.db.util" additivity="false">
> 		<level value="INFO" />
> 		<appender-ref ref="stdout" />
> 		<!--<appender-ref ref="file" />-->
> 	</logger>
>     <logger name="de.ims.core.db.jguard" additivity="false">
> 		<level value="INFO" />
> 		<appender-ref ref="stdout" />
> 		<!--<appender-ref ref="file" />-->
> 	</logger>
>     <logger name="de.ims.core.db.DBUserImpl" additivity="false">
> 		<level value="DEBUG" />
> 		<appender-ref ref="stdout" />
> 		<!--<appender-ref ref="file" />-->
> 	</logger>
>     <logger name="de.ims.core.db.DBGroupImpl" additivity="false">
> 		<level value="DEBUG" />
> 		<appender-ref ref="stdout" />
> 		<!--<appender-ref ref="file" />-->
> 	</logger>
>     <logger name="de.ims.core.db.DBOperatorImpl" additivity="false">
> 		<level value="INFO" />
> 		<appender-ref ref="stdout" />
> 		<!--<appender-ref ref="file" />-->
> 	</logger>
>     <logger name="de.ims.core.db.DBInstitutionImpl" additivity="false">
> 		<level value="INFO" />
> 		<appender-ref ref="stdout" />
> 		<!--<appender-ref ref="file" />-->
> 	</logger>
> 	<logger name="org.apache.jcs" additivity="false">
> 	   <level value="WARN" />
>        <appender-ref ref="stdout" />
>        <!--<appender-ref ref="file" />-->
>     </logger>
> 	<root>
> 		<!-- The following level element is not necessary since the -->
> 		<!-- level of the root level is set to DEBUG by default.    -->
> 		<level value="DEBUG" />
> 		<appender-ref ref="stdout" />
> 		<!--<appender-ref ref="file" />-->
> 	</root>
> </configuration>

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