On Tue, 3 Jun 2025 21:56:41 GMT, Markus Grönlund <mgron...@openjdk.org> wrote:
>> Johannes Bechberger has updated the pull request incrementally with one
>> additional commit since the last revision:
>>
>> Rename autoadapt
>
> src/hotspot/share/jfr/periodic/sampling/jfrThreadSampling.cpp line 360:
>
>> 358: tl->set_do_async_processing_of_cpu_time_jfr_requests(false);
>> 359: if (lock) {
>> 360: tl->acquire_cpu_time_jfr_dequeue_lock();
>
> This is your synchronization point on return from native code, which is
> effectively a spinlock. This can cause problems when a large number of
> threads are being processed by the "do_async_processing" request call.
>
> We should fix this as a bug after integration (use a proper Monitor as a
> synchronization point).
Filed: https://bugs.openjdk.org/browse/JDK-8358621
-------------
PR Review Comment: https://git.openjdk.org/jdk/pull/25302#discussion_r2127300632
