The following test timed out in the jdk-19-loomvt CI:

java/util/concurrent/forkjoin/AsyncShutdownNow.java

Here's a log file snippet:

#section:testng
----------messages:(8/235)----------
command: testng AsyncShutdownNow
reason: User specified action: run testng AsyncShutdownNow
Mode: agentvm
Agent id: 8
Timeout refired 480 times
Timeout information:
--- Timeout information end.
elapsed time (seconds): 495.342
----------configuration:(14/1314)*----------
Boot Layer
  class path: C:\\ade\\mesos\\work_dir\\jib-master\\install\\jtreg\\6.1\\1\\bundles\\jtreg-6.1+1.zip\\jtreg\\lib\\javatest.jar
              C:\\ade\\mesos\\work_dir\\jib-master\\install\\jtreg\\6.1\\1\\bundles\\jtreg-6.1+1.zip\\jtreg\\lib\\jtreg.jar
              C:\\ade\\mesos\\work_dir\\jib-master\\install\\jtreg\\6.1\\1\\bundles\\jtreg-6.1+1.zip\\jtreg\\lib\\junit.jar
              C:\\ade\\mesos\\work_dir\\jib-master\\install\\jtreg\\6.1\\1\\bundles\\jtreg-6.1+1.zip\\jtreg\\lib\\hamcrest.jar
              C:\\ade\\mesos\\work_dir\\jib-master\\install\\jtreg\\6.1\\1\\bundles\\jtreg-6.1+1.zip\\jtreg\\lib\\testng.jar
              C:\\ade\\mesos\\work_dir\\jib-master\\install\\jtreg\\6.1\\1\\bundles\\jtreg-6.1+1.zip\\jtreg\\lib\\jcommander.jar
              C:\\ade\\mesos\\work_dir\\jib-master\\install\\jtreg\\6.1\\1\\bundles\\jtreg-6.1+1.zip\\jtreg\\lib\\guice.jar
  patch: java.base T:\\testoutput\\test-support\\jtreg_open_test_jdk_tier1_part2\\patches\\java.base

Test Layer
  class path: T:\\testoutput\\test-support\\jtreg_open_test_jdk_tier1_part2\\classes\\3\\java\\util\\concurrent\\forkjoin\\AsyncShutdownNow.d
              C:\\ade\\mesos\\work_dir\\jib-master\\install\\jdk-19-loomvt+1-56\\src.full\\open\\test\\jdk\\java\\util\\concurrent\\forkjoin

----------rerun:(33/4697)*----------

<snip>

result: Error. Agent error: java.lang.Exception: Agent 8 timed out with a timeout of 480 seconds; check console log for any additional details

Starting this bug at P2 since this is a Tier1 failure.