I have found the issue: one of the webapps has several thread locked on a MultiThreadedHttpConnectionManager during sessionUnbound and unboundEvents.

So the background process killing the sessions is stuck as well.

Thanks for your support.



Il 21/07/2021 18:13, Mark Thomas ha scritto:
On 21/07/2021 16:00, Ivano Luberti wrote:

Il 21/07/2021 16:44, Mark Thomas ha scritto:
Take 3 thread dumps 5 seconds apart and post them here.

How to take thread dumps?

  kill -3 <pid> ?

That will work. There are lots of ways. This is most of them:

https://www.baeldung.com/java-thread-dump

Mark

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