[Graal] compiler/compilercontrol/CompilationModeHighOnlyTest.java test fails with timeout

Failure in JDK 14 CI testing -

.e.g.:
# Run test open/test/hotspot/jtreg/:hotspot_not_fast_compiler
   with macosx-x64-debug
   with -XX:+CreateCoredumpOnCrash -ea -esa -server -XX:+UnlockExperimentalVMOptions -XX:+EnableJVMCI -XX:+UseJVMCICompiler -Djvmci.Compiler=graal -XX:+TieredCompilation

#test - compiler/compilercontrol/CompilationModeHighOnlyTest.java
  Error: Program `...java' timed out (timeout set to ...ms, elapsed time including timeout handling was ...ms).

#Log extracts -
.................
#section:main
----------messages:(6/427)----------
command: main -XX:+IgnoreUnrecognizedVMOptions -Xcomp -XX:CompilationMode=high-only compiler.compilercontrol.CompilationModeHighOnlyTest
reason: User specified action: run main/othervm -XX:+IgnoreUnrecognizedVMOptions -Xcomp -XX:CompilationMode=high-only compiler.compilercontrol.CompilationModeHighOnlyTest
Mode: othervm [/othervm specified]
Timeout information:
--- Timeout information end.
elapsed time (seconds): 1296.691
----------configuration:(0/0)----------
----------System.out:(2/34)----------
Timeout refired 1200 times
Passed
----------System.err:(1/15)----------
STATUS:Passed.
..............
test result: Error. Program `/scratch/mesos/jib-master/install/jdk-14+24-1098/macosx-x64-debug.jdk/jdk-14/fastdebug/bin/java' timed out (timeout set to 1200000ms, elapsed time including timeout handling was 1296672ms).