DeviLab

Yes, it's JVM. My profiling results points at various methods which call some EPoll API and consume more CPU than in 3.5, but nothing related to `parkLoop`. For example, `WorkerThread.parkUntilNextSleeper`...

``` bash-5.1$ uname -a Linux preprod-***-7ddb768f67-kp9xt 5.14.0-427.37.1.el9_4.x86_64 #1 SMP PREEMPT_DYNAMIC Tue Sep 24 08:06:42 PDT 2024 x86_64 x86_64 x86_64 GNU/Linux bash-5.1$ java -version java version "21.0.6" 2025-01-21 LTS Java(TM) SE...

@iRevive, I can't check it via MBean, but check it directly in `IORuntime`: all poller metrics are 0.

I tested your fix. Initially I saw almost no difference between the fix and vanilla 3.6 without overridden `pollingSystem`. Than I looked at your PR and realized that it could...