Wildfly 23 Memory leak issue

[Surya Narayana Garlapati]

Hi,

We are  using WF 23 and are observing memory leak issue with the same(standalone full xml). Memory goes on increasing and never gets reduced. When we had checked the PMAP, it shows some "anon" task taking the memory. Any suggestions or GC settings?

--

Regards
Surya

[Darran Lofthouse]

If it is a true memory leak before looking at settings it sounds like some further investigation may be justified.

I would suggest having a look at the tools our there to possibly analyse a heap dump from your server.  In the past I have used the Eclipse MAT project for this.  If the problem is references to objects are being retained then GC settings will not help.

I would also suggest trying WildFly 26.1.2.Final in case this is as a result of something already fixed.

[Surya Narayana Garlapati]

Thanks for the response Darra, when we had dumped the jstack, we see many following threads(almost 400+):

"Thread-3020 (ActiveMQ-remoting-threads-ActiveMQServerImpl::serverUUID=49a160ae-59ec-11ed-bf2c-1e82d8e109d1-201407772)" #6789 prio=5 os_prio=0 tid=0x00007fb4b6f99800 nid=0x152dc waiting on condition [0x00007fb4971c1000]
   java.lang.Thread.State: TIMED_WAITING (parking)
        at sun.misc.Unsafe.park(Native Method)
        - parking to wait for  <0x000000070611c6e0> (a java.util.concurrent.SynchronousQueue$TransferStack)
        at java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:215)
        at java.util.concurrent.SynchronousQueue$TransferStack.awaitFulfill(SynchronousQueue.java:460)
        at java.util.concurrent.SynchronousQueue$TransferStack.transfer(SynchronousQueue.java:362)
        at java.util.concurrent.SynchronousQueue.poll(SynchronousQueue.java:941)
        at java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1073)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1134)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
        at org.apache.activemq.artemis.utils.ActiveMQThreadFactory$1.run(ActiveMQThreadFactory.java:118)

And as indicated earlier, we see lot of "anon" output in pmap output:
00007f6c22301000    1016      24      24 rw---   [ anon ]
00007f6c223ff000      12       0       0 -----   [ anon ]
00007f6c22402000    1016     124     124 rw---   [ anon ]
00007f6c22500000      12       0       0 -----   [ anon ]
00007f6c22503000    1016      88      88 rw---   [ anon ]
00007f6c22601000      12       0       0 -----   [ anon ]
00007f6c22604000    3064    1908    1908 rw---   [ anon ]
00007f6c22902000      12       0       0 -----   [ anon ]
00007f6c22905000    1016      92      92 rw---   [ anon ]
00007f6c22a03000      12       0       0 -----   [ anon ]
00007f6c22a06000    1016      92      92 rw---   [ anon ]
00007f6c22b04000      12       0       0 -----   [ anon ]
00007f6c22b07000    1016      92      92 rw---   [ anon ]
00007f6c22c05000      12       0       0 -----   [ anon ]
00007f6c22c08000    1016     100     100 rw---   [ anon ]
00007f6c22d06000      12       0       0 -----   [ anon ]
00007f6c22d09000    1016      92      92 rw---   [ anon ]
00007f6c22e07000      12       0       0 -----   [ anon ]
00007f6c22e0a000    1016      92      92 rw---   [ anon ]
00007f6c22f08000      12       0       0 -----   [ anon ]
00007f6c22f0b000    1016      96      96 rw---   [ anon ]
00007f6c23009000      12       0       0 -----   [ anon ]
00007f6c2300c000    1016      96      96 rw---   [ anon ]
00007f6c2310a000      12       0       0 -----   [ anon ]
00007f6c2310d000    3064    2084    2084 rw---   [ anon ]
00007f6c2340b000      12       0       0 -----   [ anon ]
00007f6c2340e000    1016      92      92 rw---   [ anon ]

We had checked and Heap Dump is remaining constant. GC is also happening. Any suggestions or help.

--
You received this message because you are subscribed to the Google Groups "WildFly" group.
To unsubscribe from this group and stop receiving emails from it, send an email to wildfly+u...@googlegroups.com.
To view this discussion on the web visit https://groups.google.com/d/msgid/wildfly/aabe9785-9ad6-4f7e-8732-47202f3437c1n%40googlegroups.com.

--

Regards
Surya

[Surya Narayana Garlapati]

Thanks for the response Darran. Sorry Mis Spelled your name.

--

Regards
Surya