The following test timed out in the JDK17 CI:

runtime/ParallelLoad/ParallelSuperTest.java

Here's a snippet from the log file:

#section:main
----------messages:(7/449)----------
command: main ParallelSuperTest -parallel -parallelCapable
reason: User specified action: run main/othervm ParallelSuperTest -parallel -parallelCapable
Mode: othervm [/othervm specified]
Additional options from @modules: --add-modules java.base --add-exports java.base/jdk.internal.org.objectweb.asm=ALL-UNNAMED --add-exports java.base/jdk.internal.misc=ALL-UNNAMED
Timeout information:
--- Timeout information end.
elapsed time (seconds): 508.829
----------configuration:(5/205)----------
Boot Layer
  add modules: java.base
  add exports: java.base/jdk.internal.misc ALL-UNNAMED
               java.base/jdk.internal.org.objectweb.asm ALL-UNNAMED

----------System.out:(15/513)----------
Thread 1 was started...
Loading Thread #1: Starting...
MainThread: t2 waits
Loading Thread #1: ClassInLoader
Loading Thread #1: CP1.foo()
Loading Thread #1: loading A extends B
Thread 2 was started...
Loading Thread #2: Starting...
Loading Thread #2: ClassInLoader
Loading Thread #2: CP2.foo()
Loading Thread #2: loading B extends A
Loading Thread #2: Exception is caught: java.lang.ClassCircularityError: B
Loading Thread #2: Finished
Loading Thread #1: t1 waits parallelCapable loader
Timeout refired 480 times
----------System.err:(3/186)----------
java version "17-ea" 2021-09-14 LTS
Java(TM) SE Runtime Environment (fastdebug build 17-ea+17-LTS-1348)
Java HotSpot(TM) 64-Bit Server VM (fastdebug build 17-ea+17-LTS-1348, mixed mode)
----------rerun:(40/6860)*----------

<snip>

result: Error. Program `/opt/mesos/jib-master/install/jdk-17+17-1348/macosx-x64-debug.jdk/jdk-17/fastdebug/bin/java' timed out (timeout set to 480000ms, elapsed time including timeout handling was 508824ms).

This test task's JVM args are: -Xshare:off -showversion

This test runs three configurations:

 * @run main/othervm ParallelSuperTest
 * @run main/othervm ParallelSuperTest -parallel
 * @run main/othervm ParallelSuperTest -parallel -parallelCapable

in the same @test. Perhaps that's too much for one default
timeout value of 2 minutes (X default timeoutFactor of 4 for a
total timeout value of 8 minutes).