On 21/11/2025 15:52, Fredriksson, Christian wrote:
Hey,
I believe I have found a bug with JDK 25 and virtual threads, but will
need some guidance in what information I need to provide in order to
file a bug.
Short version: after changing from JDK 21 to JDK 25, doing
Thread.sleep(1) in a virtual thread now sometimes takes up to 60
seconds (!).
Thanks for the mail. Do you have a standalone test that uses the loop in
your mail that we could use to study this? The timer support has
changed significantly twice between JDK 21 and JDK 25. From your mail
then it could be a pathological case that leads to starvation, or it
could be related to recently reported bug [1].
-Alan
[1] https://bugs.openjdk.org/browse/JDK-8370887
