java.lang.OutOfMemoryError: GC overhead limit exceeded

[Jose Otavio Carlomagno Filho]

If I'm not mistaken, "*GC overhead limit exceeded" *means the GC is running
but is unable to free space in the heap.

In many cases, this is caused by the application repeatedly calling
"System.gc()", which normally triggers a full GC. You should check your
application code and remove these calls if they exist.

Additionally, you can add "-XX:+DisableExplicitGC" to your startup
parameters, this way the GC will not run if your application calls
"System.gc()".

Jose


On Thu, Mar 6, 2014 at 12:13 PM, luke <luke.bike at gmail.com> wrote:

> Hi,
>
> I'm java.lang.OutOfMemoryError in a java application working on a JBossAS.
> It's strange that OutOfMemory happen when application is not so stressed.
> In my application log I found this exception
>
> *WARN  [org.jboss.mq.Connection] Connection failure, use
> javax.jms.Connection.setExceptionListener() to handle this error and
> reconnect*
> *org.jboss.mq.SpyJMSException: Exiting on IOE; - nested throwable:
> (java.net.SocketTimeoutException: Read timed out)*
> *    at
> org.jboss.mq.SpyJMSException.getAsJMSException(SpyJMSException.java:72)*
> *    at org.jboss.mq.Connection.asynchFailure(Connection.java:423)*
> *    at
> org.jboss.mq.il.uil2.UILClientILService.asynchFailure(UILClientILService.java:174)*
> *    at
> org.jboss.mq.il.uil2.SocketManager$ReadTask.handleStop(SocketManager.java:466)*
> *    at
> org.jboss.mq.il.uil2.SocketManager$ReadTask.run(SocketManager.java:395)*
> *    at java.lang.Thread.run(Thread.java:619)*
> *Caused by: java.net.SocketTimeoutException: Read timed out*
>
> and after some minutes:
>
>
>
>
>
>
>
>
>
> *2014-03-06 01:09:32,173 WARN  [org.jboss.mq.Connection] Exception
> listener ended abnormally:   java.lang.OutOfMemoryError: GC overhead limit
> exceeded    at
> java.lang.ThreadLocal.createInheritedMap(ThreadLocal.java:217)    at
> java.lang.Thread.init(Thread.java:358)    at
> java.lang.Thread.<init>(Thread.java:445)     at
> org.jboss.mq.SpyMessageConsumer.setMessageListener(SpyMessageConsumer.java:237)
> at
> it.oneans.iemx.qf.ejb.QueueService$QueueServiceExceptionListener.onException(QueueService.java:193)
> at
> org.jboss.mq.Connection$ExceptionListenerRunnable.run(Connection.java:1356)
>     at java.lang.Thread.run(Thread.java:619)*
>
> In my GC.log I can see  a rapid increase in heap memory:
>
> 54967.049: [GC [PSYoungGen: 171815K->3032K(2024448K)]
> 1716963K->1583328K(8315904K), 0.0466930 secs] [Times: user=0.20 sys=0.09,
> real=0.04 secs]
>
> 54967.097: [*Full GC (System)* [PSYoungGen: 3032K->0K(2024448K)] [*ParOldGen:
> 1580296K->1501278K*(6291456K)] 1583328K->1501278K(8315904K) [PSPermGen:
> 230071K->229632K(239744K)], 4.5397660 secs] [Times: user=18.01 sys=2.81,
> real=4.53 secs]
>
> ...
>
> 55546.522: [GC [PSYoungGen: 1883953K->129792K(1929216K)]
> 6315956K->4689948K(8220672K), 0.7681860 secs] [Times: user=8.76 sys=0.61,
> real=0.77 secs]
>
> 55561.317: [GC [PSYoungGen: 1890304K->124543K(1928448K)]
> 6450460K->4814699K(8219904K), 1.8698640 secs] [Times: user=3.30 sys=0.26,
> real=1.87 secs]
>
> ...
>
> 55754.485: [GC [PSYoungGen: 1753886K->116213K(1881920K)]
> 7755780K->6232689K(8173376K), 0.5959420 secs] [Times: user=4.34 sys=0.30,
> real=0.60 secs]
>
> 55755.083: [Full GC [PSYoungGen: 116213K->0K(1881920K)] [*ParOldGen:
> 6116476K->6031245K*(6291456K)] 6232689K->6031245K(8173376K) [PSPermGen:
> 229665K->222795K(231488K)], 36.6400980 secs] [Times: user=160.17 sys=8.40,
> real=36.63 secs]
>
> Could be OutOfmemory a side effect related to not enough free sockets  on
> the server or something else?
>
>
> thanks in advance for any suggestions
> luca
> P.S.:my gc triggers:
>                 -Xms6g -Xmx6g -XX:MaxPermSize=512m
>                 -Dsun.rmi.dgc.client.gcInterval=2100000
> -Dsun.rmi.dgc.server.gcInterval=2100000
>                 -XX:+UseParallelOldGC -XX:+UseParallelGC
>                 -XX:MaxHeapFreeRatio=70 -XX:MinHeapFreeRatio=40
> -Xverify:none -XX:+BindGCTaskThreadsToCPUs
>                 -XX:NewSize=2g -XX:MaxNewSize=2g -XX:SurvivorRatio=4
>                  -Djava.awt.headless=true
>
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>
>
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