This test failure was spotted in an Aurora Adhoc job.

gc/gctests/Steal/steal001 failed due to "exit code 151" which is a Tonga timeout.

The load average from prstat.log:

Total: 99 processes, 1875 lwps, load averages: 1.11, 1.11, 1.11

ps.log shows quite a few stale java processes, but the load average
doesn't indicate a load that could explain the timeout:

    root 28323 1 0 Apr 23 ? 400:18 /scratch/local/aurora/CommonData/jdk/bin/java -Xmixed -d64 -server -d64 -Djava.
    root 5246 1 0 Apr 09 ? 446:22 /export/local/aurora/CommonData/jdk/bin/java -Xmixed -d64 -server -Djava.net.pr
    root 11133 1 0 Mar 20 ? 483:27 /export/local/aurora/CommonData/jdk/bin/java -Xmixed -d64 -server -Djava.net.pr
    root 23466 1 0 Apr 09 ? 419:59 /export/local/aurora/CommonData/jdk/bin/java -Xmixed -d64 -server -Djava.net.pr
    root 655 1 0 May 10 ? 289:35 /export/local/aurora/CommonData/jdk/bin/java -Xmixed -d64 -server -Djava.net.pr