Following timeout failure in jdk-15+34-1551 CI testing.

test - serviceability/dcmd/gc/HeapDumpCompressedTest.java#id2

(Run test open/test/hotspot/jtreg/:hotspot_serviceability
        with linux-x64-debug
        with -Xcomp -XX:+CreateCoredumpOnCrash -ea -esa -XX:CompileThreshold=100 -XX:+UnlockExperimentalVMOptions -server -XX:+TieredCompilation -XX:+DeoptimizeALot
        #tier7-comp
        id jdk-15+34-1551 )

result: Error. Program `/opt/mach5/mesos/work_dir/jib-master/install/jdk-15+34-1551/linux-x64-debug.jdk/jdk-15/fastdebug/bin/java' timed out (timeout set to 1200000ms, elapsed time including timeout handling was 1228763ms).

(No hs_err, replay logs generated)