The following test timed out in the JDK16 CI:

runtime/handshake/HandshakeTransitionTest.java

Here's a snippet from the log file:

#section:main
----------messages:(6/371)----------
command: main -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI HandshakeTransitionTest
reason: User specified action: run main/othervm/native -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI HandshakeTransitionTest
Mode: othervm [/othervm specified]
Timeout information:
--- Timeout information end.
elapsed time (seconds): 1223.56
----------configuration:(0/0)----------
----------System.out:(3/2528)----------
Command line: [/opt/mach5/mesos/work_dir/jib-master/install/jdk-16+5-163/linux-x64-debug.jdk/jdk-16/fastdebug/bin/java -cp /opt/mach5/mesos/work_dir/slaves/52628e90-e5e7-4ef3-af97-10d8776d10db-S1014/frameworks/1735e8a2-a1db-478c-8104-60c8b0af87dd-0196/executors/98c190e1-b757-4131-b50f-f39f236edfc2/runs/bad25f36-0b1d-47d1-9375-b3aef4a1e4d9/testoutput/test-support/jtreg_open_test_hotspot_jtreg_hotspot_runtime/classes/3/runtime/handshake/HandshakeTransitionTest.d:/opt/mach5/mesos/work_dir/jib-master/install/jdk-16+5-163/src.full/open/test/hotspot/jtreg/runtime/handshake:/opt/mach5/mesos/work_dir/slaves/52628e90-e5e7-4ef3-af97-10d8776d10db-S1014/frameworks/1735e8a2-a1db-478c-8104-60c8b0af87dd-0196/executors/98c190e1-b757-4131-b50f-f39f236edfc2/runs/bad25f36-0b1d-47d1-9375-b3aef4a1e4d9/testoutput/test-support/jtreg_open_test_hotspot_jtreg_hotspot_runtime/classes/3/testlibrary:/opt/mach5/mesos/work_dir/jib-master/install/jdk-16+5-163/src.full/open/test/hotspot/jtreg/testlibrary:/opt/mach5/mesos/work_dir/slaves/52628e90-e5e7-4ef3-af97-10d8776d10db-S1014/frameworks/1735e8a2-a1db-478c-8104-60c8b0af87dd-0196/executors/98c190e1-b757-4131-b50f-f39f236edfc2/runs/bad25f36-0b1d-47d1-9375-b3aef4a1e4d9/testoutput/test-support/jtreg_open_test_hotspot_jtreg_hotspot_runtime/classes/3/test/lib:/opt/mach5/mesos/work_dir/jib-master/install/jdk-16+5-163/src.full/open/test/lib:/opt/mach5/mesos/work_dir/jib-master/install/jtreg/5.1/b01/bundles/jtreg_bin-5.1.zip/jtreg/lib/javatest.jar:/opt/mach5/mesos/work_dir/jib-master/install/jtreg/5.1/b01/bundles/jtreg_bin-5.1.zip/jtreg/lib/jtreg.jar -XX:MaxRAMPercentage=6 -Djava.io.tmpdir=/opt/mach5/mesos/work_dir/slaves/52628e90-e5e7-4ef3-af97-10d8776d10db-S1014/frameworks/1735e8a2-a1db-478c-8104-60c8b0af87dd-0196/executors/98c190e1-b757-4131-b50f-f39f236edfc2/runs/bad25f36-0b1d-47d1-9375-b3aef4a1e4d9/testoutput/test-support/jtreg_open_test_hotspot_jtreg_hotspot_runtime/tmp -Xcomp -XX:+CreateCoredumpOnCrash -ea -esa -XX:CompileThreshold=100 -XX:+UnlockExperimentalVMOptions -server -XX:+TieredCompilation -XX:-DoEscapeAnalysis -Djava.library.path=/opt/mach5/mesos/work_dir/jib-master/install/jdk-16+5-163/linux-x64-debug.test/hotspot/jtreg/native -XX:+SafepointALot -XX:+HandshakeALot -XX:GuaranteedSafepointInterval=20 -Xlog:ergo* -XX:ParallelGCThreads=1 -XX:ConcGCThreads=1 -XX:CICompilerCount=2 -XX:+UnlockExperimentalVMOptions -XX:-UseJVMCICompiler HandshakeTransitionTest$Test ]
[2020-07-09T22:28:28.278980983Z] Gathering output for process 3121611
Timeout refired 1200 times
----------System.err:(0/0)----------
----------rerun:(48/8661)*----------


Here are the options specified in this test task:

-Xcomp -XX:+CreateCoredumpOnCrash -ea -esa -XX:CompileThreshold=100 -XX:+UnlockExperimentalVMOptions -server -XX:+TieredCompilation -XX:-DoEscapeAnalysis