diff -r 15e026239a6c -r fcdb8e7ead8f test/hotspot/jtreg/gc/cms/TestMBeanCMS.java
--- a/test/hotspot/jtreg/gc/cms/TestMBeanCMS.java	Fri Nov 08 14:54:17 2019 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,157 +0,0 @@
-/*
- * Copyright (c) 2010, 2019, Oracle and/or its affiliates. All rights reserved.
- * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
- *
- * This code is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 2 only, as
- * published by the Free Software Foundation.
- *
- * This code is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
- * version 2 for more details (a copy is included in the LICENSE file that
- * accompanied this code).
- *
- * You should have received a copy of the GNU General Public License version
- * 2 along with this work; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
- *
- * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
- * or visit www.oracle.com if you need additional information or have any
- * questions.
- */
-
-package gc.cms;
-
-/*
- * @test TestMBeanCMS.java
- * @bug 6581734
- * @requires vm.gc.ConcMarkSweep & !vm.graal.enabled
- * @summary CMS Old Gen's collection usage is zero after GC which is incorrect
- * @modules java.management
- * @run main/othervm -Xmx512m -verbose:gc -XX:+UseConcMarkSweepGC gc.cms.TestMBeanCMS
- *
- */
-
-import java.lang.management.GarbageCollectorMXBean;
-import java.lang.management.ManagementFactory;
-import java.lang.management.MemoryPoolMXBean;
-import java.util.LinkedList;
-import java.util.List;
-
-// 6581734 states that memory pool usage via the mbean is wrong
-// for CMS (zero, even after a collection).
-//
-// 6580448 states that the collection count similarly is wrong
-// (stays at zero for CMS collections)
-// -- closed as dup of 6581734 as the same fix resolves both.
-
-
-public class TestMBeanCMS {
-
-    private String poolName = "CMS";
-    private String collectorName = "ConcurrentMarkSweep";
-
-    public static void main(String [] args) {
-
-        TestMBeanCMS t = null;
-        if (args.length==2) {
-            t = new TestMBeanCMS(args[0], args[1]);
-        } else {
-            System.out.println("Defaulting to monitor CMS pool and collector.");
-            t = new TestMBeanCMS();
-        }
-        t.run();
-    }
-
-    public TestMBeanCMS(String pool, String collector) {
-        poolName = pool;
-        collectorName = collector;
-    }
-
-    public TestMBeanCMS() {
-    }
-
-    public void run() {
-        // Use some memory, enough that we expect collections should
-        // have happened.
-        // Must run with options to ensure no stop the world full GC,
-        // but e.g. at least one CMS cycle.
-        allocationWork(300*1024*1024);
-        System.out.println("Done allocationWork");
-
-        // Verify some non-zero results are stored.
-        List<MemoryPoolMXBean> pools = ManagementFactory.getMemoryPoolMXBeans();
-        int poolsFound = 0;
-        int poolsWithStats = 0;
-        for (int i=0; i<pools.size(); i++) {
-            MemoryPoolMXBean pool = pools.get(i);
-            String name = pool.getName();
-            System.out.println("found pool: " + name);
-
-            if (name.contains(poolName)) {
-                long usage = pool.getCollectionUsage().getUsed();
-                System.out.println(name + ": usage after GC = " + usage);
-                poolsFound++;
-                if (usage > 0) {
-                    poolsWithStats++;
-                }
-            }
-        }
-        if (poolsFound == 0) {
-            throw new RuntimeException("No matching memory pools found: test with -XX:+UseConcMarkSweepGC");
-        }
-
-        List<GarbageCollectorMXBean> collectors = ManagementFactory.getGarbageCollectorMXBeans();
-        int collectorsFound = 0;
-        int collectorsWithTime= 0;
-        for (int i=0; i<collectors.size(); i++) {
-            GarbageCollectorMXBean collector = collectors.get(i);
-            String name = collector.getName();
-            System.out.println("found collector: " + name);
-            if (name.contains(collectorName)) {
-                collectorsFound++;
-                System.out.println(name + ": collection count = "
-                                   + collector.getCollectionCount());
-                System.out.println(name + ": collection time  = "
-                                   + collector.getCollectionTime());
-                if (collector.getCollectionCount() <= 0) {
-                    throw new RuntimeException("collection count <= 0");
-                }
-                if (collector.getCollectionTime() > 0) {
-                    collectorsWithTime++;
-                }
-            }
-        }
-        // verify:
-        if (poolsWithStats < poolsFound) {
-            throw new RuntimeException("pools found with zero stats");
-        }
-
-        if (collectorsWithTime<collectorsFound) {
-            throw new RuntimeException("collectors found with zero time");
-        }
-        System.out.println("Test passed.");
-    }
-
-    public void allocationWork(long target) {
-
-        long sizeAllocated = 0;
-        List<byte[]> list = new LinkedList<>();
-        long delay = 50;
-        long count = 0;
-
-        while (sizeAllocated < target) {
-            int size = 1024*1024;
-            byte [] alloc = new byte[size];
-            if (count % 2 == 0) {
-                list.add(alloc);
-                sizeAllocated+=size;
-                System.out.print(".");
-            }
-            try { Thread.sleep(delay); } catch (InterruptedException ie) { }
-            count++;
-        }
-    }
-
-}