I have tried both Block and Sleep (the default), but not Yield. No discernable difference.
On Wed, Mar 19, 2014 at 1:53 PM, Remko Popma <[email protected]> wrote: > As tweeted, I suggest trying the blocking wait strategy. Can you run a > jstack dump (and perhaps attach result to a Jira ticket)? In the attached > stack trace below, the AsyncLoggerConfig-1 thread seems to be parked, > waiting for a new log event... Doesn't explain high CPU usage... > > Sent from my iPhone > > > On 2014/03/19, at 10:27, Chris Graham <[email protected]> wrote: > > > > Hello Everyone. > > > > In this instance, I'm in indirect used of log4j2 2.0-rc1, as it's in the > > web app that I'm using, Apache Archiva 2.0.1. > > > > The issue is that when running under WebSphere 8.5.0.2 (obviously on the > > IBM JDK, 1.6) on AIX 6.1 TL8, Apache Archiva when it's doing nothing, is > > sitting idle on around 50% CPU. > > > > Obviosuly, this is not good! > > > > I've performed the AIX native analysis, to get the native thread ID, > mapped > > it to a Java thread it, triggered a heap dump, and I've found this as the > > culprit: > > > > 3XMTHREADINFO "AsyncLoggerConfig-1" J9VMThread:0x0000000031D14600, > > j9thread_t:0x00000100137D8BD0, java/lang/Thread:0x000000004301C508, > > state:CW, prio=5 > > 3XMJAVALTHREAD (java/lang/Thread getId:0x6A, isDaemon:true) > > 3XMTHREADINFO1 (native thread ID:0x2BF00F9, native > priority:0x5, > > native policy:UNKNOWN) > > 3XMHEAPALLOC Heap bytes allocated since last GC cycle=0 (0x0) > > 3XMTHREADINFO3 Java callstack: > > 4XESTACKTRACE at sun/misc/Unsafe.park(Native Method) > > 4XESTACKTRACE at > > java/util/concurrent/locks/LockSupport.parkNanos(LockSupport.java:332) > > 4XESTACKTRACE at > > > com/lmax/disruptor/SleepingWaitStrategy.applyWaitMethod(SleepingWaitStrategy.java:66) > > 4XESTACKTRACE at > > > com/lmax/disruptor/SleepingWaitStrategy.waitFor(SleepingWaitStrategy.java:39) > > 4XESTACKTRACE at > > > com/lmax/disruptor/ProcessingSequenceBarrier.waitFor(ProcessingSequenceBarrier.java:55) > > 4XESTACKTRACE at > > com/lmax/disruptor/BatchEventProcessor.run(BatchEventProcessor.java:115) > > 4XESTACKTRACE at > > > java/util/concurrent/ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:895) > > 4XESTACKTRACE at > > > java/util/concurrent/ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:918) > > 4XESTACKTRACE at java/lang/Thread.run(Thread.java:773) > > 3XMTHREADINFO3 Native callstack: > > 4XENATIVESTACK _event_wait+0x2b8 (0x09000000007E7D3C > > [libpthreads.a+0x16d3c]) > > 4XENATIVESTACK _cond_wait_local+0x4e4 (0x09000000007F5A48 > > [libpthreads.a+0x24a48]) > > 4XENATIVESTACK _cond_wait+0xbc (0x09000000007F6020 > > [libpthreads.a+0x25020]) > > 4XENATIVESTACK pthread_cond_wait+0x1a8 (0x09000000007F6C8C > > [libpthreads.a+0x25c8c]) > > 4XENATIVESTACK (0x0900000001223014 [libj9thr26.so+0x6014]) > > 4XENATIVESTACK (0x0900000001222C60 [libj9thr26.so+0x5c60]) > > 4XENATIVESTACK (0x090000000116AE58 [libj9vm26.so+0xfe58]) > > 4XENATIVESTACK (0x090000000116B17C [libj9vm26.so+0x1017c]) > > 4XENATIVESTACK (0x0900000001810528 > [libjclscar_26.so+0x5c528]) > > 4XENATIVESTACK (0x0900000001813B98 > [libjclscar_26.so+0x5fb98]) > > 4XENATIVESTACK (0x0900000001161764 [libj9vm26.so+0x6764]) > > 4XENATIVESTACK (0x0900000001239CA0 [libj9prt26.so+0x2ca0]) > > 4XENATIVESTACK (0x09000000011615D4 [libj9vm26.so+0x65d4]) > > 4XENATIVESTACK (0x090000000121FAF4 [libj9thr26.so+0x2af4]) > > 4XENATIVESTACK _pthread_body+0xf0 (0x09000000007D4D34 > > [libpthreads.a+0x3d34]) > > NULL > > > > I've been dealing with Olivier, from Archiva, and he suggested that I > drop > > a message in here. > > > > Are there any known issues with this? > > > > -Chris > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [email protected] > For additional commands, e-mail: [email protected] > >
