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From "Emmanuel Lecharny (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (DIRMINA-588) High CPU Usage in AprIoProcessor
Date Wed, 16 Dec 2015 13:58:47 GMT

     [ https://issues.apache.org/jira/browse/DIRMINA-588?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Emmanuel Lecharny updated DIRMINA-588:
--------------------------------------
    Fix Version/s:     (was: 2.0.10)
                   2.0.11

> High CPU Usage in AprIoProcessor
> --------------------------------
>
>                 Key: DIRMINA-588
>                 URL: https://issues.apache.org/jira/browse/DIRMINA-588
>             Project: MINA
>          Issue Type: Bug
>          Components: Transport
>    Affects Versions: 2.0.0-M2
>         Environment: Linux jellikit 2.6.24-16-generic #1 SMP Thu Apr 10 13:23:42 UTC
2008 i686 GNU/Linux
> java version "1.6.0_06"
> Java(TM) SE Runtime Environment (build 1.6.0_06-b02)
> Java HotSpot(TM) Server VM (build 10.0-b22, mixed mode)
> tomcat-native-1.1.13
> apr-1.2.11
>            Reporter: Geoff Cadien
>             Fix For: 2.0.11
>
>         Attachments: AprTest.java
>
>
> When running a simple test using the APR transport I see high cpu utilization that will
continue which not active connections until the application is terminated.  
> Here is a thread dump:
> 2008-05-19 17:41:46
> Full thread dump Java HotSpot(TM) Server VM (10.0-b22 mixed mode):
> "AprIoProcessor-2" prio=10 tid=0x08399400 nid=0x5faa runnable [0xa0169000..0xa016a0c0]
>    java.lang.Thread.State: RUNNABLE
> 	at java.util.concurrent.ConcurrentLinkedQueue.casHead(ConcurrentLinkedQueue.java:139)
> 	at java.util.concurrent.ConcurrentLinkedQueue.poll(ConcurrentLinkedQueue.java:219)
> 	at org.apache.mina.common.AbstractPollingIoProcessor.flush(AbstractPollingIoProcessor.java:471)
> 	at org.apache.mina.common.AbstractPollingIoProcessor.access$9(AbstractPollingIoProcessor.java:465)
> 	at org.apache.mina.common.AbstractPollingIoProcessor$Worker.run(AbstractPollingIoProcessor.java:707)
> 	at org.apache.mina.util.NamePreservingRunnable.run(NamePreservingRunnable.java:51)
> 	at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:885)
> 	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:907)
> 	at java.lang.Thread.run(Thread.java:619)
> "AprIoProcessor-3" prio=10 tid=0x083c4000 nid=0x5fa9 runnable [0xa01ba000..0xa01bb040]
>    java.lang.Thread.State: RUNNABLE
> 	at org.apache.tomcat.jni.Socket.recvb(Native Method)
> 	at org.apache.mina.transport.socket.apr.AprIoProcessor.read(AprIoProcessor.java:332)
> 	at org.apache.mina.transport.socket.apr.AprIoProcessor.read(AprIoProcessor.java:1)
> 	at org.apache.mina.common.AbstractPollingIoProcessor.read(AbstractPollingIoProcessor.java:418)
> 	at org.apache.mina.common.AbstractPollingIoProcessor.process(AbstractPollingIoProcessor.java:397)
> 	at org.apache.mina.common.AbstractPollingIoProcessor.process(AbstractPollingIoProcessor.java:389)
> 	at org.apache.mina.common.AbstractPollingIoProcessor.access$8(AbstractPollingIoProcessor.java:387)
> 	at org.apache.mina.common.AbstractPollingIoProcessor$Worker.run(AbstractPollingIoProcessor.java:703)
> 	at org.apache.mina.util.NamePreservingRunnable.run(NamePreservingRunnable.java:51)
> 	at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:885)
> 	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:907)
> 	at java.lang.Thread.run(Thread.java:619)
> "AprIoProcessor-1" prio=10 tid=0x083c3800 nid=0x5fa8 runnable [0xa020b000..0xa020bfc0]
>    java.lang.Thread.State: RUNNABLE
> 	at org.apache.tomcat.jni.Poll.poll(Native Method)
> 	at org.apache.mina.transport.socket.apr.AprIoProcessor.select(AprIoProcessor.java:130)
> 	at org.apache.mina.common.AbstractPollingIoProcessor$Worker.run(AbstractPollingIoProcessor.java:697)
> 	at org.apache.mina.util.NamePreservingRunnable.run(NamePreservingRunnable.java:51)
> 	at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:885)
> 	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:907)
> 	at java.lang.Thread.run(Thread.java:619)
> "DestroyJavaVM" prio=10 tid=0x0805a400 nid=0x5f88 waiting on condition [0x00000000..0xb7db1090]
>    java.lang.Thread.State: RUNNABLE
> "AprSocketAcceptor-1" prio=10 tid=0x08318000 nid=0x5f9a runnable [0xa025c000..0xa025cf40]
>    java.lang.Thread.State: RUNNABLE
> 	at org.apache.tomcat.jni.Poll.poll(Native Method)
> 	at org.apache.mina.transport.socket.apr.AprSocketAcceptor.select(AprSocketAcceptor.java:189)
> 	at org.apache.mina.common.AbstractPollingIoAcceptor$Worker.run(AbstractPollingIoAcceptor.java:203)
> 	at org.apache.mina.util.NamePreservingRunnable.run(NamePreservingRunnable.java:51)
> 	at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:885)
> 	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:907)
> 	at java.lang.Thread.run(Thread.java:619)
> "AprSocketAcceptor-1-idleStatusChecker" prio=10 tid=0x082a1400 nid=0x5f99 waiting on
condition [0xa02ad000..0xa02adec0]
>    java.lang.Thread.State: TIMED_WAITING (sleeping)
> 	at java.lang.Thread.sleep(Native Method)
> 	at org.apache.mina.common.IdleStatusChecker$NotifyingTaskImpl.run(IdleStatusChecker.java:89)
> 	at org.apache.mina.util.NamePreservingRunnable.run(NamePreservingRunnable.java:51)
> 	at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:885)
> 	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:907)
> 	at java.lang.Thread.run(Thread.java:619)
> "Low Memory Detector" daemon prio=10 tid=0x080ff400 nid=0x5f96 runnable [0x00000000..0x00000000]
>    java.lang.Thread.State: RUNNABLE
> "CompilerThread1" daemon prio=10 tid=0x080fdc00 nid=0x5f95 waiting on condition [0x00000000..0xa05e1548]
>    java.lang.Thread.State: RUNNABLE
> "CompilerThread0" daemon prio=10 tid=0x080fb000 nid=0x5f94 waiting on condition [0x00000000..0xa06624c8]
>    java.lang.Thread.State: RUNNABLE
> "Signal Dispatcher" daemon prio=10 tid=0x080fa000 nid=0x5f93 waiting on condition [0x00000000..0x00000000]
>    java.lang.Thread.State: RUNNABLE
> "Finalizer" daemon prio=10 tid=0x080de800 nid=0x5f8e in Object.wait() [0xa074a000..0xa074afc0]
>    java.lang.Thread.State: WAITING (on object monitor)
> 	at java.lang.Object.wait(Native Method)
> 	- waiting on <0xa4c607e0> (a java.lang.ref.ReferenceQueue$Lock)
> 	at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:116)
> 	- locked <0xa4c607e0> (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=0x080dd400 nid=0x5f8d in Object.wait() [0xa079b000..0xa079bf40]
>    java.lang.Thread.State: WAITING (on object monitor)
> 	at java.lang.Object.wait(Native Method)
> 	- waiting on <0xa4c60380> (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 <0xa4c60380> (a java.lang.ref.Reference$Lock)
> "VM Thread" prio=10 tid=0x080da400 nid=0x5f8c runnable 
> "GC task thread#0 (ParallelGC)" prio=10 tid=0x08061000 nid=0x5f89 runnable 
> "GC task thread#1 (ParallelGC)" prio=10 tid=0x08062000 nid=0x5f8a runnable 
> "VM Periodic Task Thread" prio=10 tid=0x08100c00 nid=0x5f97 waiting on condition 
> JNI global references: 981
> Heap
>  PSYoungGen      total 28736K, used 27996K [0xb2fa0000, 0xb4c10000, 0xb4c10000)
>   eden space 28352K, 97% used [0xb2fa0000,0xb4aab070,0xb4b50000)
>   from space 384K, 79% used [0xb4b50000,0xb4b9c000,0xb4bb0000)
>   to   space 384K, 0% used [0xb4bb0000,0xb4bb0000,0xb4c10000)
>  PSOldGen        total 233024K, used 137223K [0xa4c10000, 0xb2fa0000, 0xb2fa0000)
>   object space 233024K, 58% used [0xa4c10000,0xad211c20,0xb2fa0000)
>  PSPermGen       total 16384K, used 3678K [0xa0c10000, 0xa1c10000, 0xa4c10000)
>   object space 16384K, 22% used [0xa0c10000,0xa0fa79a8,0xa1c10000)



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