test/java/lang/management/MemoryMXBean/CollectionUsageThresholdConcMarkSweepGC.sh fails in HSX19-b06

java/lang/management/MemoryMXBean/CollectionUsageThresholdConcMarkSweepGC.sh
hangs with HSX19-b06 (failed with jdk7 b109-b113). The test passes with HSX19-b05
(tested with jdk7 b108 and also jdk7 b113 swapped with HSX19-b05 VM).

To reproduce the failure:

> jtreg -ea -esa -jdk:/java/re/jdk/7/latest/binaries/solaris-i586/bin/java \
  <jdk-repo>/test/java/lang/management/MemoryMXBean/CollectionUsageThresholdConcMarkSweepGC.sh
Another way to reproduce the failure:

$ /java/re/jdk/7/latest/binaries/solaris-i586/bin/java -XX:+UseConcMarkSweepGC CollectionUsageThreshold

Collection usage threshold of CMS Old Gen set to 10
Collection usage threshold of CMS Perm Gen set to 10
Calling System.gc()
main waiting for result checking finishes
Notification for CMS Old Gen [type = java.management.memory.collection.threshold.exceeded count = 1]
    usage = init = 50331648(49152K) used = 133712(130K) committed = 50331648(49152K) max = 83886080(81920K)
Notification for CMS Perm Gen [type = java.management.memory.collection.threshold.exceeded count = 2]
    usage = init = 16777216(16384K) used = 1977176(1930K) committed = 16777216(16384K) max = 67108864(65536K)
Low Memory Detector notifying to check result
Exception in thread "Checker thread" java.lang.RuntimeException: Notif Count = 2 expected to be 1
        at CollectionUsageThreshold$Checker.checkResult(CollectionUsageThreshold.java:213)
        at CollectionUsageThreshold$Checker.run(CollectionUsageThreshold.java:200)