The following test timed out in the JDK17 CI:

jdk/jfr/api/consumer/log/TestVerbosity.java

Here's a snippet from the log file:

#section:main
----------messages:(7/469)----------
command: main -Xlog:jfr+event*=info:file=info.log -XX:StartFlightRecording jdk.jfr.api.consumer.log.TestVerbosity info
reason: User specified action: run main/othervm -Xlog:jfr+event*=info:file=info.log -XX:StartFlightRecording jdk.jfr.api.consumer.log.TestVerbosity info
Mode: othervm [/othervm specified]
Additional options from @modules: --add-modules jdk.jfr,java.management
Timeout information:
--- Timeout information end.
elapsed time (seconds): 494.672
----------configuration:(3/54)----------
Boot Layer
  add modules: jdk.jfr java.management

----------System.out:(7/360)----------
[4.089s][info][jfr,startup] Started recording 1. No limit specified, using maxsize=250MB as default.
[4.089s][info][jfr,startup]
[4.089s][info][jfr,startup] Use jcmd 41988 JFR.dump name=1 filename=FILEPATH to copy recording data to file.
Testing log level: info
Should not contain: 'CPULoad'
Should not contain: 'UserDefined'
Timeout refired 480 times
----------System.err:(1/16)----------
STATUS:Passed.
----------rerun:(44/5417)*----------

<snip>

result: Error. Program `c:\ade\mesos\work_dir\jib-master\install\jdk-17+30-2586\windows-x64-debug.jdk\jdk-17\fastdebug\bin\java' timed out (timeout set to 480000ms, elapsed time including timeout handling was 494641ms).

There's another open bug for this test with a different
failure mode:

JDK-8268298 jdk/jfr/api/consumer/log/TestVerbosity.java fails: unexpected log message