--- old/src/java.base/share/classes/java/lang/AbstractStringBuilder.java	2015-04-24 20:13:36.926423266 +0300
+++ new/src/java.base/share/classes/java/lang/AbstractStringBuilder.java	2015-04-24 20:13:36.814430712 +0300
@@ -99,8 +99,8 @@
      * array is allocated with greater capacity. The new capacity is the
      * larger of:
      * <ul>
-     * <li>The {@code minimumCapacity} argument.
-     * <li>Twice the old capacity, plus {@code 2}.
+     * <li>The {@code minimumCapacity} argument, plus {@code 32}.
+     * <li>Twice the old capacity, plus {@code 32}.
      * </ul>
      * If the {@code minimumCapacity} argument is nonpositive, this
      * method takes no action and simply returns.
@@ -129,9 +129,10 @@
      * size check or synchronization.
      */
     void expandCapacity(int minimumCapacity) {
-        int newCapacity = value.length * 2 + 2;
+        int newCapacity = value.length * 2;
         if (newCapacity - minimumCapacity < 0)
             newCapacity = minimumCapacity;
+        newCapacity += 32; // expect follow-up ops
         if (newCapacity < 0) {
             if (minimumCapacity < 0) // overflow
                 throw new OutOfMemoryError();