I start a jetty server on linux using
nohup mvn jetty:run &
to run it in background and to stay when I quit from the console. Usually (mvn jetty:run) it starts in seconds, but in this case it takes about minute to start. What can be the cause of such a delay?
Thanks.
I would run it in the foreground, and trigger a thread dump (Ctrl+Break), and see what it's doing by inspecting each thread stack trace. Without any further information I can't offer any more advice.
Stack trace
Full thread dump Java HotSpot(TM) 64-Bit Server VM (11.0-b16 mixed mode):
"Attach Listener" daemon prio=10 tid=0x000000004bba8c00 nid=0x560a waiting on condition [0x0000000000000000..0x0000000000000000]
java.lang.Thread.State: RUNNABLE
"Timer-1" daemon prio=10 tid=0x00002aaac053d800 nid=0x55fb in Object.wait() [0x0000000042392000..0x0000000042392b90]
java.lang.Thread.State: TIMED_WAITING (on object monitor)
at java.lang.Object.wait(Native Method)
- waiting on <0x00002aaaae554f40> (a java.util.TaskQueue)
at java.util.TimerThread.mainLoop(Timer.java:509)
- locked <0x00002aaaae554f40> (a java.util.TaskQueue)
at java.util.TimerThread.run(Timer.java:462)
"StopJettyPluginMonitor" daemon prio=10 tid=0x00002aaac04b4c00 nid=0x55fa runnable [0x0000000042291000..0x0000000042291b10]
java.lang.Thread.State: RUNNABLE
at java.net.PlainSocketImpl.socketAccept(Native Method)
at java.net.PlainSocketImpl.accept(PlainSocketImpl.java:384)
- locked <0x00002aaaae453860> (a java.net.SocksSocketImpl)
at java.net.ServerSocket.implAccept(ServerSocket.java:453)
at java.net.ServerSocket.accept(ServerSocket.java:421)
at org.mortbay.jetty.plugin.util.Monitor.run(Monitor.java:74)
"Timer-0" daemon prio=10 tid=0x000000004b5cf800 nid=0x55f9 in Object.wait() [0x0000000040c78000..0x0000000040c78a90]
java.lang.Thread.State: TIMED_WAITING (on object monitor)
at java.lang.Object.wait(Native Method)
- waiting on <0x00002aaaaeea00b8> (a java.util.TaskQueue)
at java.util.TimerThread.mainLoop(Timer.java:509)
- locked <0x00002aaaaeea00b8> (a java.util.TaskQueue)
at java.util.TimerThread.run(Timer.java:462)
"1455093129@qtp-422797318-1 - Acceptor0 [email protected]:8080" prio=10 tid=0x000000004b6d9800 nid=0x55f7 runnable [0x000000004130c000..0x000000004130ca10]
java.lang.Thread.State: RUNNABLE
at sun.nio.ch.EPollArrayWrapper.epollWait(Native Method)
at sun.nio.ch.EPollArrayWrapper.poll(EPollArrayWrapper.java:215)
at sun.nio.ch.EPollSelectorImpl.doSelect(EPollSelectorImpl.java:65)
at sun.nio.ch.SelectorImpl.lockAndDoSelect(SelectorImpl.java:69)
- locked <0x00002aaaae44ac10> (a sun.nio.ch.Util$1)
- locked <0x00002aaaae44abf8> (a java.util.Collections$UnmodifiableSet)
- locked <0x00002aaaae44a588> (a sun.nio.ch.EPollSelectorImpl)
at sun.nio.ch.SelectorImpl.select(SelectorImpl.java:80)
at org.mortbay.io.nio.SelectorManager$SelectSet.doSelect(SelectorManager.java:459)
at org.mortbay.io.nio.SelectorManager.doSelect(SelectorManager.java:192)
at org.mortbay.jetty.nio.SelectChannelConnector.accept(SelectChannelConnector.java:124)
at org.mortbay.jetty.AbstractConnector$Acceptor.run(AbstractConnector.java:706)
at org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:520)
"91446054@qtp-422797318-0" prio=10 tid=0x000000004b621400 nid=0x55f6 in Object.wait() [0x000000004120b000..0x000000004120bd90]
java.lang.Thread.State: TIMED_WAITING (on object monitor)
at java.lang.Object.wait(Native Method)
- waiting on <0x00002aaab1171890> (a org.mortbay.thread.QueuedThreadPool$PoolThread)
at org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:563)
- locked <0x00002aaab1171890> (a org.mortbay.thread.QueuedThreadPool$PoolThread)
"pool-1-thread-5" prio=10 tid=0x00002aaac15d4c00 nid=0x55f5 in Object.wait() [0x0000000041a4f000..0x0000000041a4fd10]
java.lang.Thread.State: WAITING (on object monitor)
at java.lang.Object.wait(Native Method)
- waiting on <0x00002aaaafff4580> (a hidden.edu.emory.mathcs.backport.java.util.concurrent.LinkedBlockingQueue$SerializableLock)
at java.lang.Object.wait(Object.java:485)
at hidden.edu.emory.mathcs.backport.java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:316)
- locked <0x00002aaaafff4580> (a hidden.edu.emory.mathcs.backport.java.util.concurrent.LinkedBlockingQueue$SerializableLock)
at hidden.edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:994)
at hidden.edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1054)
at hidden.edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:575)
at java.lang.Thread.run(Thread.java:619)
"pool-1-thread-4" prio=10 tid=0x00002aaac0134000 nid=0x55f4 in Object.wait() [0x000000004194e000..0x000000004194ec90]
java.lang.Thread.State: WAITING (on object monitor)
at java.lang.Object.wait(Native Method)
- waiting on <0x00002aaaafff4580> (a hidden.edu.emory.mathcs.backport.java.util.concurrent.LinkedBlockingQueue$SerializableLock)
at java.lang.Object.wait(Object.java:485)
at hidden.edu.emory.mathcs.backport.java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:316)
- locked <0x00002aaaafff4580> (a hidden.edu.emory.mathcs.backport.java.util.concurrent.LinkedBlockingQueue$SerializableLock)
at hidden.edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:994)
at hidden.edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1054)
at hidden.edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:575)
at java.lang.Thread.run(Thread.java:619)
"pool-1-thread-3" prio=10 tid=0x000000004ba72800 nid=0x55f3 in Object.wait() [0x0000000042190000..0x0000000042190c10]
java.lang.Thread.State: WAITING (on object monitor)
at java.lang.Object.wait(Native Method)
- waiting on <0x00002aaaafff4580> (a hidden.edu.emory.mathcs.backport.java.util.concurrent.LinkedBlockingQueue$SerializableLock)
at java.lang.Object.wait(Object.java:485)
at hidden.edu.emory.mathcs.backport.java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:316)
- locked <0x00002aaaafff4580> (a hidden.edu.emory.mathcs.backport.java.util.concurrent.LinkedBlockingQueue$SerializableLock)
at hidden.edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:994)
at hidden.edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1054)
at hidden.edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:575)
at java.lang.Thread.run(Thread.java:619)
"pool-1-thread-2" prio=10 tid=0x000000004b8b6c00 nid=0x55f2 in Object.wait() [0x000000004208f000..0x000000004208fb90]
java.lang.Thread.State: WAITING (on object monitor)
at java.lang.Object.wait(Native Method)
- waiting on <0x00002aaaafff4580> (a hidden.edu.emory.mathcs.backport.java.util.concurrent.LinkedBlockingQueue$SerializableLock)
at java.lang.Object.wait(Object.java:485)
at hidden.edu.emory.mathcs.backport.java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:316)
- locked <0x00002aaaafff4580> (a hidden.edu.emory.mathcs.backport.java.util.concurrent.LinkedBlockingQueue$SerializableLock)
at hidden.edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:994)
at hidden.edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1054)
at hidden.edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:575)
at java.lang.Thread.run(Thread.java:619)
"pool-1-thread-1" prio=10 tid=0x000000004b8b6400 nid=0x55f1 in Object.wait() [0x0000000040415000..0x0000000040415b10]
java.lang.Thread.State: WAITING (on object monitor)
at java.lang.Object.wait(Native Method)
- waiting on <0x00002aaaafff4580> (a hidden.edu.emory.mathcs.backport.java.util.concurrent.LinkedBlockingQueue$SerializableLock)
at java.lang.Object.wait(Object.java:485)
at hidden.edu.emory.mathcs.backport.java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:316)
- locked <0x00002aaaafff4580> (a hidden.edu.emory.mathcs.backport.java.util.concurrent.LinkedBlockingQueue$SerializableLock)
at hidden.edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:994)
at hidden.edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1054)
at hidden.edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:575)
at java.lang.Thread.run(Thread.java:619)
"Low Memory Detector" daemon prio=10 tid=0x000000004affd800 nid=0x55eb runnable [0x0000000000000000..0x0000000000000000]
java.lang.Thread.State: RUNNABLE
"CompilerThread1" daemon prio=10 tid=0x000000004affb800 nid=0x55ea waiting on condition [0x0000000000000000..0x0000000041d8b4d0]
java.lang.Thread.State: RUNNABLE
"CompilerThread0" daemon prio=10 tid=0x000000004aff7800 nid=0x55e9 waiting on condition [0x0000000000000000..0x0000000041c8a450]
java.lang.Thread.State: RUNNABLE
"Signal Dispatcher" daemon prio=10 tid=0x000000004aff5c00 nid=0x55e8 runnable [0x0000000000000000..0x0000000041b8a820]
java.lang.Thread.State: RUNNABLE
"Finalizer" daemon prio=10 tid=0x000000004afd2400 nid=0x55e7 in Object.wait() [0x000000004184d000..0x000000004184db10]
java.lang.Thread.State: WAITING (on object monitor)
at java.lang.Object.wait(Native Method)
- waiting on <0x00002aaaafdf0450> (a java.lang.ref.ReferenceQueue$Lock)
at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:116)
- locked <0x00002aaaafdf0450> (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=0x000000004afd0800 nid=0x55e6 in Object.wait() [0x000000004174c000..0x000000004174ca90]
java.lang.Thread.State: WAITING (on object monitor)
at java.lang.Object.wait(Native Method)
- waiting on <0x00002aaaafdf0530> (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 <0x00002aaaafdf0530> (a java.lang.ref.Reference$Lock)
"main" prio=10 tid=0x000000004af6e000 nid=0x55e4 in Object.wait() [0x000000004072f000..0x0000000040730ed0]
java.lang.Thread.State: WAITING (on object monitor)
at java.lang.Object.wait(Native Method)
- waiting on <0x00002aaab1196b60> (a org.mortbay.thread.QueuedThreadPool$Lock)
at java.lang.Object.wait(Object.java:485)
at org.mortbay.thread.QueuedThreadPool.join(QueuedThreadPool.java:298)
- locked <0x00002aaab1196b60> (a org.mortbay.thread.QueuedThreadPool$Lock)
at org.mortbay.jetty.plugin.Jetty6PluginServer.join(Jetty6PluginServer.java:206)
at org.mortbay.jetty.plugin.AbstractJettyMojo.startJetty(AbstractJettyMojo.java:461)
at org.mortbay.jetty.plugin.AbstractJettyMojo.execute(AbstractJettyMojo.java:383)
at org.mortbay.jetty.plugin.AbstractJettyRunMojo.execute(AbstractJettyRunMojo.java:210)
at org.mortbay.jetty.plugin.Jetty6RunMojo.execute(Jetty6RunMojo.java:184)
at org.apache.maven.plugin.DefaultPluginManager.executeMojo(DefaultPluginManager.java:483)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoals(DefaultLifecycleExecutor.java:678)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeStandaloneGoal(DefaultLifecycleExecutor.java:553)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoal(DefaultLifecycleExecutor.java:523)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeGoalAndHandleFailures(DefaultLifecycleExecutor.java:371)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.executeTaskSegments(DefaultLifecycleExecutor.java:332)
at org.apache.maven.lifecycle.DefaultLifecycleExecutor.execute(DefaultLifecycleExecutor.java:181)
at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:356)
at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:137)
at org.apache.maven.cli.MavenCli.main(MavenCli.java:362)
at org.apache.maven.cli.compat.CompatibleMain.main(CompatibleMain.java:41)
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.codehaus.classworlds.Launcher.launchEnhanced(Launcher.java:315)
at org.codehaus.classworlds.Launcher.launch(Launcher.java:255)
at org.codehaus.classworlds.Launcher.mainWithExitCode(Launcher.java:430)
at org.codehaus.classworlds.Launcher.main(Launcher.java:375)
"VM Thread" prio=10 tid=0x000000004afcb000 nid=0x55e5 runnable
"VM Periodic Task Thread" prio=10 tid=0x000000004b000000 nid=0x55ec waiting on condition
JNI global references: 861
I suggest you try using screen. Might be overkill for such a simple task, but you can wrap it in a shell script.