https://bz.apache.org/bugzilla/show_bug.cgi?id=58151
--- Comment #10 from Milo <m...@vanderzee.org> ---
Hello,
I'm using Gentoo so not only Centos is affected. I can trigger the bug by
restarting apache while there are sessions active.
Load on the server does not seem to influence the occurance of the bug.
Sometimes the load goes down again after about 30 minutes till hours. I did not
actually measure the time but I noticed that sometimes the load goes back to
normal after a long time.
Because of the context switching (>400,000 cs/sec) that is causing the load I
assume that the parkNanos call is in the neighborhood of where to look for
fixes.
"ajp-apr-8200-exec-107" #3671 daemon prio=5 os_prio=0 tid=0x00007f62a007f800
nid=0x3adc waiting on condition [0x00007f624d4a6000]
java.lang.Thread.State: TIMED_WAITING (parking)
at sun.misc.Unsafe.park(Native Method)
- parking to wait for <0x00000000ed8dfbe0> (a
java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject)
at
java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:215)
at
java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2078)
at
java.util.concurrent.LinkedBlockingQueue.poll(LinkedBlockingQueue.java:467)
at org.apache.tomcat.util.threads.TaskQueue.poll(Unknown Source)
at org.apache.tomcat.util.threads.TaskQueue.poll(Unknown Source)
at
java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1066)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1127)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at
org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(Unknown Source)
at java.lang.Thread.run(Thread.java:745)
Thanks.
MAG,
Milo
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