--- /dev/null	2017-01-10 14:43:04.278213149 +0300
+++ new/test/serviceability/tmtools/jstat/utils/GarbageProducer.java	2017-01-13 14:21:31.468899452 +0300
@@ -0,0 +1,112 @@
+/*
+ * Copyright (c) 2017, 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 utils;
+
+import java.lang.management.ManagementFactory;
+import java.lang.management.MemoryPoolMXBean;
+import java.lang.management.MemoryUsage;
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * This is an class used to allocate specified amount of metaspace and heap.
+ * Object of this class should be created before any garbage collection cycles because GC can
+ * shrink heap and Runtime.maxMemory() might report unexpected value.
+ */
+public class GarbageProducer{
+
+    // Uses fixed small objects to avoid Humongous objects allocation with G1 GC.
+    public static final int MEMORY_CHUNK = 2048;
+
+    public static List<Object> allocatedMetaspace;
+    public static List<Object> allocatedMemory;
+
+    private final Runtime runtime;
+    private final float targetMemoryUsagePercent;
+    private final long garbageToAllocate;
+
+    /**
+     * @param targetMemoryUsagePercent how many percent of metaspace and heap to allocate
+     */
+    public GarbageProducer(float targetMemoryUsagePercent) {
+        this.targetMemoryUsagePercent = targetMemoryUsagePercent;
+        runtime = Runtime.getRuntime();
+        // Calculate amount of garbage to occupate targetMemoryUsagePercent of heap
+        garbageToAllocate = runtime.freeMemory()
+            - (long) ((1.0 - targetMemoryUsagePercent) * runtime.maxMemory());
+    }
+
+    /**
+     * Allocates heap and metaspace upon exit targetMemoryUsagePercent percents
+     * of heap and metaspace have been consumed.
+     */
+    public void allocateMetaspaceAndHeap() {
+        // Metaspace should be filled before Java Heap to prevent unexpected OOME
+        // in the Java Heap while filling Metaspace
+        allocatedMetaspace = eatMetaspace(targetMemoryUsagePercent);
+        allocatedMemory = allocateGarbage(garbageToAllocate);
+    }
+
+    private List<Object> eatMetaspace(float targetUsage) {
+        List<Object> list = new ArrayList<>();
+        final String metaspacePoolName = "Metaspace";
+        MemoryPoolMXBean metaspacePool = null;
+        for (MemoryPoolMXBean pool : ManagementFactory.getMemoryPoolMXBeans()) {
+            if (pool.getName().contains(metaspacePoolName)) {
+                metaspacePool = pool;
+                break;
+            }
+        }
+        if (metaspacePool == null) {
+            throw new RuntimeException("MXBean for Metaspace pool wasn't found");
+        }
+        float currentUsage;
+        GeneratedClassProducer gp = new GeneratedClassProducer();
+        do {
+            try {
+                list.add(gp.create(0));
+            } catch (OutOfMemoryError oome) {
+                list = null;
+                throw new RuntimeException("Unexpected OOME '" + oome.getMessage() + "' while eating " + targetUsage + " of Metaspace.");
+            }
+            MemoryUsage memoryUsage = metaspacePool.getUsage();
+            currentUsage = (((float) memoryUsage.getUsed()) / memoryUsage.getMax());
+        } while (currentUsage < targetUsage);
+        return list;
+    }
+
+    private List<Object> allocateGarbage(long garbageToAllocate) {
+        long allocated = 0l;
+        List<Object> list = new ArrayList<>();
+        do {
+            try {
+                list.add(new byte[MEMORY_CHUNK]);
+                allocated += MEMORY_CHUNK;
+            } catch (OutOfMemoryError e) {
+                list = null;
+                throw new RuntimeException("Unexpected OOME '" + e.getMessage() + "'. Allocated " + allocated + " bytes.");
+            }
+        } while (allocated < garbageToAllocate);
+        return list;
+    }
+}