Tobi

-Xint https://openj9-jenkins.osuosl.org/job/Grinder/3300/ (0/30 failed) -Xjit https://openj9-jenkins.osuosl.org/job/Grinder/3301/ (4/30 failed)

My guess is that a call to unpark is being missed, perhaps being optimized out?

Gonna run a few more just to verify it cant be seen with -Xint https://openj9-jenkins.osuosl.org/job/Grinder/3302/ (60 runs) no faiures

60 runs with jit exclude on `ParkLoops` https://openj9-jenkins.osuosl.org/job/Grinder/3303/ (two failures)

60 runs with OSR turned off https://openj9-jenkins.osuosl.org/job/Grinder/3304/ (3 failures)

80 runs excluding LockSupport compilation https://openj9-jenkins.osuosl.org/job/Grinder/3315/ no failures

More runs with -Xjit:exclude={ParkLoops.*,java/util/concurrent/locks/LockSupport.*} https://openj9-jenkins.osuosl.org/job/Grinder/3316/ (140 runs - 11 failures)

Retrying Xint https://openj9-jenkins.osuosl.org/job/Grinder/3317/ (200 runs) no failures

@JasonFengJ9 Can you please take a look at this

@ChengJin01 Please review these changes