The vmTestbase/nsk/jdb/options/connect/connect002/connect002.java test fails transiently on libgraal when run with -Xcomp with:

launcher > Starting local debuggee.
launcher > Start jdb attaching to local debuggee
debuggee.stdout> Listening for transport dt_socket at address: 53879
Creating file for jdb stdout stream: ./jdb.stdout
Creating file for jdb session: ./jdb.session
Creating file for jdb stderr stream: ./jdb.stderr
debuggee.stderr> Debugger failed to attach: timeout during handshake
JdbStderrReader: jdb's stderr is not empty. Check jdb.stderr file
JdbStderrReader: jdb's stderr is not empty. Check jdb.stderr file
Creating file for jdb stdout stream: ./jdb.stdout
Creating file for jdb session: ./jdb.session
Creating file for jdb stderr stream: ./jdb.stderr
debuggee.stderr> Debugger failed to attach: timeout during handshake
JdbStderrReader: jdb's stderr is not empty. Check jdb.stderr file
JdbStderrReader: jdb's stderr is not empty. Check jdb.stderr file
Creating file for jdb stdout stream: ./jdb.stdout
Creating file for jdb session: ./jdb.session
Creating file for jdb stderr stream: ./jdb.stderr
# ERROR: Caught unexpected exception: nsk.share.Failure: Launched jdb could not attach to debuggee during 300000 milliseconds.
The following stacktrace is for failure analysis.
nsk.share.TestFailure: Caught unexpected exception: nsk.share.Failure: Launched jdb could not attach to debuggee during 300000 milliseconds.
        at nsk.share.Log.logExceptionForFailureAnalysis(Log.java:431)
        at nsk.share.Log.complain(Log.java:402)
        at nsk.share.jdb.JdbTest.failure(JdbTest.java:74)
        at nsk.share.jdb.JdbTest.runTest(JdbTest.java:202)
        at nsk.jdb.options.connect.connect002.connect002.run(connect002.java:81)
        at nsk.jdb.options.connect.connect002.connect002.main(connect002.java:74)
        at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103)
        at java.base/java.lang.reflect.Method.invoke(Method.java:580)
        at com.sun.javatest.regtest.agent.MainWrapper$MainTask.run(MainWrapper.java:138)
        at java.base/java.lang.Thread.run(Thread.java:1570)
nsk.share.Failure: Launched jdb could not attach to debuggee during 300000 milliseconds.
        at nsk.share.jdb.Jdb.startAttachingJdb(Jdb.java:982)
        at nsk.share.jdb.Launcher.localLaunchAndAttach(Launcher.java:333)
        at nsk.share.jdb.Launcher.launchJdbAndDebuggee(Launcher.java:122)
        at nsk.share.jdb.JdbTest.launchJdbAndDebuggee(JdbTest.java:83)
        at nsk.share.jdb.JdbTest.runTest(JdbTest.java:141)
        at nsk.jdb.options.connect.connect002.connect002.run(connect002.java:81)
        at nsk.jdb.options.connect.connect002.connect002.main(connect002.java:74)
        at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:103)
        at java.base/java.lang.reflect.Method.invoke(Method.java:580)
        at com.sun.javatest.regtest.agent.MainWrapper$MainTask.run(MainWrapper.java:138)
        at java.base/java.lang.Thread.run(Thread.java:1570)

The test always passes without -Xcomp and even mostly passes with -Xcomp on some platforms. This implies there's a timeout used in the test somewhere that needs to be increased when running with -Xcomp and libgraal.