The following test timed out in the JDK18 CI:

applications/microbenchmarks/other/Test_8.java#id3

Here's a snippet from the log file:

----------System.out:(6/6687)*----------
Command line: [c:\\ade\\mesos\\work_dir\\jib-master\\install\\jdk-18+18-1093\\windows-x64-debug.jdk\\jdk-18\\fastdebug\\bin\\java.exe -cp C:\\ade\\mesos\\work_dir\\jib-master\\install\\jdk-18+18-1093\\src.full\\closed\\test\\hotspot\\jtreg\\applications\\microbenchmarks\\other;T:\\testoutput\\test-support\\jtreg_closed_test_hotspot_jtreg_applications_microbenchmarks_other_Test_8_java\\classes\\4\\open\\test\\lib;T:\\testoutput\\test-support\\jtreg_closed_test_hotspot_jtreg_applications_microbenchmarks_other_Test_8_java\\classes\\4;C:\\ade\\mesos\\work_dir\\jib-master\\install\\jtreg\\6\\1\\bundles\\jtreg-6+1.zip\\jtreg\\lib\\javatest.jar;C:\\ade\\mesos\\work_dir\\jib-master\\install\\jtreg\\6\\1\\bundles\\jtreg-6+1.zip\\jtreg\\lib\\jtreg.jar;C:\\ade\\mesos\\work_dir\\jib-master\\install\\jtreg\\6\\1\\bundles\\jtreg-6+1.zip\\jtreg\\lib\\junit.jar;C:\\ade\\mesos\\work_dir\\jib-master\\install\\jtreg\\6\\1\\bundles\\jtreg-6+1.zip\\jtreg\\lib\\hamcrest.jar;C:\\ade\\mesos\\work_dir\\jib-master\\install\\jtreg\\6\\1\\bundles\\jtreg-6+1.zip\\jtreg\\lib\\testng.jar;C:\\ade\\mesos\\work_dir\\jib-master\\install\\jtreg\\6\\1\\bundles\\jtreg-6+1.zip\\jtreg\\lib\\jcommander.jar;C:\\ade\\mesos\\work_dir\\jib-master\\install\\jtreg\\6\\1\\bundles\\jtreg-6+1.zip\\jtreg\\lib\\guice.jar -XX:MaxRAMPercentage=4.16667 -Djava.io.tmpdir=t:\\testoutput\\test-support\\jtreg_closed_test_hotspot_jtreg_applications_microbenchmarks_other_Test_8_java\\tmp -XX:+CreateCoredumpOnCrash -ea -esa -XX:CompileThreshold=100 -XX:+UnlockExperimentalVMOptions -server -XX:+TieredCompilation -XX:+VerifyOops -cp C:\\ade\\mesos\\work_dir\\jib-master\\install\\jdk-18+18-1093\\src.full\\closed\\test\\hotspot\\jtreg\\applications\\microbenchmarks\\other;T:\\testoutput\\test-support\\jtreg_closed_test_hotspot_jtreg_applications_microbenchmarks_other_Test_8_java\\classes\\4\\open\\test\\lib;T:\\testoutput\\test-support\\jtreg_closed_test_hotspot_jtreg_applications_microbenchmarks_other_Test_8_java\\classes\\4;C:\\ade\\mesos\\work_dir\\jib-master\\install\\jtreg\\6\\1\\bundles\\jtreg-6+1.zip\\jtreg\\lib\\javatest.jar;C:\\ade\\mesos\\work_dir\\jib-master\\install\\jtreg\\6\\1\\bundles\\jtreg-6+1.zip\\jtreg\\lib\\jtreg.jar;C:\\ade\\mesos\\work_dir\\jib-master\\install\\jtreg\\6\\1\\bundles\\jtreg-6+1.zip\\jtreg\\lib\\junit.jar;C:\\ade\\mesos\\work_dir\\jib-master\\install\\jtreg\\6\\1\\bundles\\jtreg-6+1.zip\\jtreg\\lib\\hamcrest.jar;C:\\ade\\mesos\\work_dir\\jib-master\\install\\jtreg\\6\\1\\bundles\\jtreg-6+1.zip\\jtreg\\lib\\testng.jar;C:\\ade\\mesos\\work_dir\\jib-master\\install\\jtreg\\6\\1\\bundles\\jtreg-6+1.zip\\jtreg\\lib\\jcommander.jar;C:\\ade\\mesos\\work_dir\\jib-master\\install\\jtreg\\6\\1\\bundles\\jtreg-6+1.zip\\jtreg\\lib\\guice.jar;c:\\ade\\mesos\\work_dir\\jib-master\\download\\com\\oracle\\micros-uberpackage\\1.21\\micros-uberpackage-1.21.jar --add-opens java.base/java.io=ALL-UNNAMED -Djmh.ignoreLock=true -Djava.io.tmpdir=T:\\testoutput\\test-support\\jtreg_closed_test_hotspot_jtreg_applications_microbenchmarks_other_Test_8_java\\scratch\\1 org.openjdk.jmh.Main -f 1 -foe true com.oracle.jfr.jmh.simple.StringPool.mtStringEvent$ ]
[jmh]:c:\\ade\\mesos\\work_dir\\jib-master\\install\\jdk-18+18-1093\\windows-x64-debug.jdk\\jdk-18\\fastdebug\\bin\\java.exe -cp C:\\ade\\mesos\\work_dir\\jib-master\\install\\jdk-18+18-1093\\src.full\\closed\\test\\hotspot\\jtreg\\applications\\microbenchmarks\\other;T:\\testoutput\\test-support\\jtreg_closed_test_hotspot_jtreg_applications_microbenchmarks_other_Test_8_java\\classes\\4\\open\\test\\lib;T:\\testoutput\\test-support\\jtreg_closed_test_hotspot_jtreg_applications_microbenchmarks_other_Test_8_java\\classes\\4;C:\\ade\\mesos\\work_dir\\jib-master\\install\\jtreg\\6\\1\\bundles\\jtreg-6+1.zip\\jtreg\\lib\\javatest.jar;C:\\ade\\mesos\\work_dir\\jib-master\\install\\jtreg\\6\\1\\bundles\\jtreg-6+1.zip\\jtreg\\lib\\jtreg.jar;C:\\ade\\mesos\\work_dir\\jib-master\\install\\jtreg\\6\\1\\bundles\\jtreg-6+1.zip\\jtreg\\lib\\junit.jar;C:\\ade\\mesos\\work_dir\\jib-master\\install\\jtreg\\6\\1\\bundles\\jtreg-6+1.zip\\jtreg\\lib\\hamcrest.jar;C:\\ade\\mesos\\work_dir\\jib-master\\install\\jtreg\\6\\1\\bundles\\jtreg-6+1.zip\\jtreg\\lib\\testng.jar;C:\\ade\\mesos\\work_dir\\jib-master\\install\\jtreg\\6\\1\\bundles\\jtreg-6+1.zip\\jtreg\\lib\\jcommander.jar;C:\\ade\\mesos\\work_dir\\jib-master\\install\\jtreg\\6\\1\\bundles\\jtreg-6+1.zip\\jtreg\\lib\\guice.jar -XX:MaxRAMPercentage=4.16667 -Djava.io.tmpdir=t:\\testoutput\\test-support\\jtreg_closed_test_hotspot_jtreg_applications_microbenchmarks_other_Test_8_java\\tmp -XX:+CreateCoredumpOnCrash -ea -esa -XX:CompileThreshold=100 -XX:+UnlockExperimentalVMOptions -server -XX:+TieredCompilation -XX:+VerifyOops -cp C:\\ade\\mesos\\work_dir\\jib-master\\install\\jdk-18+18-1093\\src.full\\closed\\test\\hotspot\\jtreg\\applications\\microbenchmarks\\other;T:\\testoutput\\test-support\\jtreg_closed_test_hotspot_jtreg_applications_microbenchmarks_other_Test_8_java\\classes\\4\\open\\test\\lib;T:\\testoutput\\test-support\\jtreg_closed_test_hotspot_jtreg_applications_microbenchmarks_other_Test_8_java\\classes\\4;C:\\ade\\mesos\\work_dir\\jib-master\\install\\jtreg\\6\\1\\bundles\\jtreg-6+1.zip\\jtreg\\lib\\javatest.jar;C:\\ade\\mesos\\work_dir\\jib-master\\install\\jtreg\\6\\1\\bundles\\jtreg-6+1.zip\\jtreg\\lib\\jtreg.jar;C:\\ade\\mesos\\work_dir\\jib-master\\install\\jtreg\\6\\1\\bundles\\jtreg-6+1.zip\\jtreg\\lib\\junit.jar;C:\\ade\\mesos\\work_dir\\jib-master\\install\\jtreg\\6\\1\\bundles\\jtreg-6+1.zip\\jtreg\\lib\\hamcrest.jar;C:\\ade\\mesos\\work_dir\\jib-master\\install\\jtreg\\6\\1\\bundles\\jtreg-6+1.zip\\jtreg\\lib\\testng.jar;C:\\ade\\mesos\\work_dir\\jib-master\\install\\jtreg\\6\\1\\bundles\\jtreg-6+1.zip\\jtreg\\lib\\jcommander.jar;C:\\ade\\mesos\\work_dir\\jib-master\\install\\jtreg\\6\\1\\bundles\\jtreg-6+1.zip\\jtreg\\lib\\guice.jar;c:\\ade\\mesos\\work_dir\\jib-master\\download\\com\\oracle\\micros-uberpackage\\1.21\\micros-uberpackage-1.21.jar --add-opens java.base/java.io=ALL-UNNAMED -Djmh.ignoreLock=true -Djava.io.tmpdir=T:\\testoutput\\test-support\\jtreg_closed_test_hotspot_jtreg_applications_microbenchmarks_other_Test_8_java\\scratch\\1 org.openjdk.jmh.Main -f 1 -foe true com.oracle.jfr.jmh.simple.StringPool.mtStringEvent$
[jmh] # JMH version: 1.21
[jmh] # VM version: JDK 18-ea, Java HotSpot(TM) 64-Bit Server VM, 18-ea+18-1093
[jmh] # VM invoker: c:\\ade\\mesos\\work_dir\\jib-master\\install\\jdk-18+18-1093\\windows-x64-debug.jdk\\jdk-18\\fastdebug\\bin\\java.exe
[jmh] # VM options: -XX:+IgnoreUnrecognizedVMOptions -XX:+UnlockCommercialFeatures --add-exports=jdk.jfr/jdk.jfr.internal=ALL-UNNAMED -X
result: Error. Agent error: java.lang.Exception: Agent 11 timed out with a timeout of 6000 seconds; check console log for any additional details

The test task's JVM args are:
-XX:+CreateCoredumpOnCrash -ea -esa -XX:CompileThreshold=100 -XX:+UnlockExperimentalVMOptions -server -XX:+TieredCompilation -XX:+VerifyOops

I don't have any good guesses on where to start this one so
I'm putting it in hotspot/test to see if there might be a
microbenchmarks harness issue here.