--- old/test/jdk/java/lang/management/MemoryMXBean/CollectionUsageThreshold.java	2018-10-19 10:54:17.000000000 -0400
+++ new/test/jdk/java/lang/management/MemoryMXBean/CollectionUsageThreshold.java	2018-10-19 10:54:17.000000000 -0400
@@ -75,7 +75,8 @@
         RunUtil.runTestKeepGcOpts(main);
         RunUtil.runTestClearGcOpts(main, "-XX:+UseSerialGC");
         RunUtil.runTestClearGcOpts(main, "-XX:+UseParallelGC");
-        RunUtil.runTestClearGcOpts(main, "-XX:+UseG1GC");
+        RunUtil.runTestClearGcOpts(main, "-XX:+UseG1GC", "-XX:-G1UseLegacyMonitoring");
+        RunUtil.runTestClearGcOpts(main, "-XX:+UseG1GC", "-XX:+G1UseLegacyMonitoring");
         if (!Compiler.isGraalEnabled()) { // Graal does not support CMS
             RunUtil.runTestClearGcOpts(main, "-XX:+UseConcMarkSweepGC");
         }
@@ -147,11 +148,17 @@
             // Find the Old generation which supports low memory detection
             for (MemoryPoolMXBean p : pools) {
                 if (p.isUsageThresholdSupported() && p.isCollectionUsageThresholdSupported()) {
-                    if (p.getName().toLowerCase().contains("perm")) {
+                    String poolName = p.getName().toLowerCase();
+                    if (poolName.contains("perm")) {
                         // if we have a "perm gen" pool increase the number of expected
                         // memory pools by one.
                         numMemoryPools++;
                     }
+                    if (poolName.contains("g1 humongous space")) {
+                        // if we have a "g1 humongous space" pool increase the number of expected
+                        // memory pools by one.
+                        numMemoryPools++;
+                    }
                     PoolRecord pr = new PoolRecord(p);
                     result.put(p.getName(), pr);
                     if (result.size() == numMemoryPools) {