The following test failed in the JDK15 CI:

compiler/loopopts/TestLogSum.java

Here's a snippet from the log file:

#section:main
----------messages:(6/301)----------
command: main -XX:-TieredCompilation -Xbatch compiler.loopopts.TestLogSum
reason: User specified action: run main/othervm -XX:-TieredCompilation -Xbatch compiler.loopopts.TestLogSum
Mode: othervm [/othervm specified]
Timeout information:
--- Timeout information end.
elapsed time (seconds): 1222.432
----------configuration:(0/0)----------
----------System.out:(1/27)----------
Timeout refired 1200 times
----------System.err:(2/224)----------
Java HotSpot(TM) 64-Bit Server VM warning: Disabling tiered compilation with non-native JVMCI compiler is not recommended. Turning on tiered compilation and disabling intermediate compilation levels instead.
STATUS:Passed.
----------rerun:(44/5031)*----------

The test passed while the JTREG timeout handler was running
as shown by:

STATUS:Passed.

Sometimes that can indicate that the test needs a slightly longer
default timeout value. However, this test ran for > 20 minutes:

elapsed time (seconds): 1222.432

which is a bit odd for a Tier3 test.

I just noticed these options are specified when running this test:

    -XX:-TieredCompilation -Xbatch

Update: Tobias pointed out that the test task is run with Graal.
Here's the relevant task options:

-XX:+UnlockExperimentalVMOptions -XX:+EnableJVMCI -XX:+UseJVMCICompiler -Djvmci.Compiler=graal -XX:+TieredCompilation

Notice the "-XX:+TieredCompilation" at the end.

Here's the option from the "rerun" section of the log:

        -XX:+UnlockExperimentalVMOptions \\
        -XX:+EnableJVMCI \\
        -XX:+UseJVMCICompiler \\
        -Djvmci.Compiler=graal \\
        -XX:+TieredCompilation \\
        -Djava.library.path=/mesos/work_dir/jib-master/install/jdk-15+17-714/macosx-x64-debug.test/hotspot/jtreg/native \\
        -XX:-TieredCompilation \\
        -Xbatch \\

Looks like the test's option are last.