--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/hotspot/jtreg/runtime/LoadClass/TestResize.java	Thu Nov 02 11:00:34 2017 -0500
@@ -0,0 +1,103 @@
+/*
+ * 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.
+ */
+
+/*
+ * @test
+ * @bug 8184765
+ * @summary make sure the SystemDictionary gets resized when load factor is too high
+ * @library /test/lib
+ * @modules java.base/jdk.internal.misc
+ *          java.management
+ * @compile TriggerResize.java
+ * @run driver TestResize
+ */
+
+import java.lang.ProcessBuilder;
+import java.lang.Process;
+import jdk.test.lib.process.ProcessTools;
+import java.io.BufferedReader;
+import java.io.InputStreamReader;
+import java.util.Scanner;
+
+public class TestResize {
+
+  static double MAX_LOAD_FACTOR = 5.0; // see _resize_load_trigger in dictionary.cpp
+
+  static int getInt(String string) {
+    int start = 0;
+    for (int i = 0; i < string.length(); i++) {
+      if (!Character.isDigit(string.charAt(i))) {
+        start++;
+      } else {
+        break;
+      }
+    }
+    int end = start;
+    for (int i = end; i < string.length(); i++) {
+      if (Character.isDigit(string.charAt(i))) {
+        end++;
+      } else {
+        break;
+      }
+    }
+    return Integer.parseInt(string.substring(start, end));
+  }
+
+  static void analyzeOutputOn(ProcessBuilder pb) throws Exception {
+    pb.redirectErrorStream(true);
+    Process process = pb.start();
+    BufferedReader rd = new BufferedReader(new InputStreamReader(process.getInputStream()));
+    String line = rd.readLine();
+    while (line != null) {
+      if (line.startsWith("Java dictionary (")) {
+        // ex. "Java dictionary (table_size=107, classes=6)"
+        // ex. "Java dictionary (table_size=20201, classes=50002)"
+        Scanner scanner = new Scanner(line);
+        scanner.next();
+        scanner.next();
+        int table_size = getInt(scanner.next());
+        int classes = getInt(scanner.next());
+        scanner.close();
+
+        double loadFactor = (double)classes / (double)table_size;
+        if (loadFactor > MAX_LOAD_FACTOR) {
+          throw new RuntimeException("Load factor too high, expected MAX "+MAX_LOAD_FACTOR+", got "+loadFactor);
+        } else {
+          System.out.println("PASS table_size:"+table_size+", classes:"+classes+" OK");
+        }
+      }
+      line = rd.readLine();
+    }
+    int retval = process.waitFor();
+    if (retval != 0) {
+      throw new RuntimeException("Error: test returned non-zero value");
+    }
+  }
+
+  public static void main(String[] args) throws Exception {
+    ProcessBuilder pb = ProcessTools.createJavaProcessBuilder("-XX:+PrintSystemDictionaryAtExit",
+                                                              "TriggerResize",
+                                                              "50000");
+    analyzeOutputOn(pb);
+  }
+}