Fwd: java.lang.OutOfMemoryError: GC overhead limit exceeded

[luke]

---------- Forwarded message ----------
From: luke <luke.bike at gmail.com>
Date: 2014-03-06 16:13 GMT+01:00
Subject: java.lang.OutOfMemoryError: GC overhead limit exceeded
To: "hotspot-gc-use at openjdk.java.net" <hotspot-gc-use at openjdk.java.net>


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]


========================================
SUMMARY:
========================================
# GC Events: 947
GC Event Types: PARALLEL_SCAVENGE, PARALLEL_OLD_COMPACTING
Max Heap Space: 8372416K
Max Heap Occupancy: 7957408K
Max Perm Space: 419072K
Max Perm Occupancy: 237674K
Throughput: 97%
Max Pause: 74541 ms
Total Pause: 2728421 ms
First Timestamp: 4316 ms
Last Timestamp: 85186298 ms
========================================
ANALYSIS:
========================================
========================================

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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