The following test timed out in the JDK21 CI:

jdk/jfr/api/event/TestIsEnabledMultiple.java

Here's a log file snippet:

#section:main
----------messages:(9/418)----------
command: main jdk.jfr.api.event.TestIsEnabledMultiple
reason: User specified action: run main/othervm jdk.jfr.api.event.TestIsEnabledMultiple
started: Wed May 03 08:29:20 UTC 2023
Mode: othervm [/othervm specified]
Additional options from @modules: --add-modules jdk.jfr,java.management
Timeout information:
--- Timeout information end.
finished: Wed May 03 08:39:29 UTC 2023
elapsed time (seconds): 608.657
----------configuration:(3/54)----------
Boot Layer
  add modules: jdk.jfr java.management

----------System.out:(29/785)----------
Recording a is NEW. Event is Enabled
Recording b is NEW. Event is Enabled
Expected enablement: false

Recording a is NEW. Event is Enabled
Recording b is NEW. Event is Disabled
Expected enablement: false

Recording a is NEW. Event is Disabled
Recording b is NEW. Event is Enabled
Expected enablement: false

Recording a is NEW. Event is Disabled
Recording b is NEW. Event is Disabled
Expected enablement: false

Recording a is NEW. Event is Enabled
Recording b is RUNNING. Event is Enabled
Expected enablement: true

Recording a is NEW. Event is Enabled
Recording b is RUNNING. Event is Disabled
Expected enablement: false

Recording a is NEW. Event is Disabled
Recording b is RUNNING. Event is Enabled
Expected enablement: true

Timeout refired 480 times
----------System.err:(0/0)----------
----------rerun:(45/6023)*----------

<snip>

result: Error. Program `c:\ade\mesos\work_dir\jib-master\install\jdk-21+21-1766\windows-x64-debug.jdk\jdk-21\fastdebug\bin\java' timed out (timeout set to 480000ms, elapsed time including timeout handling was 608640ms).