What is the "VM Periodic Task Thread"?
I can see this thread in my thread dump:
"VM Periodic Task Thread" prio=10 tid=0x00007fc23000e800 nid=开发者_开发知识库0x49e6 waiting on condition
What is it?
Having a look at the latest OpenJDK source, this is C++ level thread which performs a number of tasks on systems where there is not a native timer interrupt.
It appears to be mostly used for sampling/profiling what the JVM is doing.
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