Index: lucene/src/test/org/apache/lucene/index/codecs/simple64/Simple64VarIntTest.java
===================================================================
--- lucene/src/test/org/apache/lucene/index/codecs/simple64/Simple64VarIntTest.java	(revision 1067253)
+++ lucene/src/test/org/apache/lucene/index/codecs/simple64/Simple64VarIntTest.java	(working copy)
@@ -62,7 +62,7 @@
       throws IOException {
     final RAMDirectory dir = new RAMDirectory();
     final String filename = Simple64.class.toString();
-    final IntStreamFactory factory = new Simple64VarIntCodec().getIntFactory();
+    final IntStreamFactory factory = new Simple64VarIntCodec(_TestUtil.nextInt(random, 1, 4)).getIntFactory();
     final IntIndexOutput output = factory.createOutput(dir, filename);
 
     if (VERBOSE) {
Index: lucene/src/java/org/apache/lucene/index/codecs/simple64/Simple64VarIntCodec.java
===================================================================
--- lucene/src/java/org/apache/lucene/index/codecs/simple64/Simple64VarIntCodec.java	(revision 1067253)
+++ lucene/src/java/org/apache/lucene/index/codecs/simple64/Simple64VarIntCodec.java	(working copy)
@@ -18,6 +18,8 @@
  */
 
 import java.io.IOException;
+import java.nio.ByteBuffer;
+import java.nio.LongBuffer;
 import java.util.Set;
 
 import org.apache.lucene.index.SegmentInfo;
@@ -52,9 +54,11 @@
  */
 
 public class Simple64VarIntCodec extends Codec {
+  private final int multiplier;
 
-  public Simple64VarIntCodec() {
+  public Simple64VarIntCodec(int multiplier) {
     name = "Simple64VarInt";
+    this.multiplier = multiplier;
   }
 
   @Override
@@ -76,9 +80,17 @@
         @Override
         protected BlockReader getBlockReader(final IndexInput in, final int[] buffer) throws IOException {
           return new BlockReader() {
+            private final ByteBuffer nioBuffer = ByteBuffer.allocate(multiplier * 8);
+            private final byte[] byteBuffer = nioBuffer.array();
+            private final LongBuffer longBuffer = nioBuffer.asLongBuffer();
             public int readBlock() throws IOException {
               //System.out.println("S64.readBlock in.fp=" + in.getFilePointer());
-              int count = Simple64.decompressSingle(in.readLong(), buffer, 0);
+              int count = 0;
+              in.readBytes(byteBuffer, 0, 8*multiplier);
+              longBuffer.rewind();
+              for(int i=0;i<multiplier;i++) {
+                count += Simple64.decompressSingle(longBuffer.get(), buffer, count);
+              }
               /*
               System.out.println("  count=" + count);
               for(int i=0;i<count;i++) {
@@ -94,18 +106,34 @@
 
     @Override
     public IntIndexOutput createOutput(Directory dir, String fileName) throws IOException {
-      return new VariableIntBlockIndexOutput(dir.createOutput(fileName), 61) {
-        final long[] result = new long[1];
-        final Simple64 compressor = new Simple64();
+      return new VariableIntBlockIndexOutput(dir.createOutput(fileName), 61*multiplier) {
+        private final long[] buffer = new long[multiplier];
+        private int totWritten;
+        private int totConsumed;
+
+        private final long[] result = new long[1];
+        private final Simple64 compressor = new Simple64();
         
         @Override
         protected int add(int v) throws IOException {
           final int consumed = compressor.add(v, result);
           if (consumed != 0) {
-            //System.out.println("S64.write count=" + consumed + " out.fp=" + out.getFilePointer());
-            out.writeLong(result[0]);
+            totConsumed += consumed;
+            buffer[totWritten++] = result[0];
+            if (totWritten == multiplier) {
+              for(int i=0;i<multiplier;i++) {
+                out.writeLong(buffer[i]);
+              }
+              final int ret = totConsumed;
+              totConsumed = 0;
+              totWritten = 0;
+              return ret;
+            } else {
+              return 0;
+            }
+          } else {
+            return 0;
           }
-          return consumed;
         }
       };
     }
Index: lucene/src/java/org/apache/lucene/index/codecs/CodecProvider.java
===================================================================
--- lucene/src/java/org/apache/lucene/index/codecs/CodecProvider.java	(revision 1067253)
+++ lucene/src/java/org/apache/lucene/index/codecs/CodecProvider.java	(working copy)
@@ -181,6 +181,6 @@
     register(new PForDeltaFixedIntBlockCodec(128));
     register(new BulkVIntCodec(128));
     register(new Simple64Codec(128));
-    register(new Simple64VarIntCodec());
+    register(new Simple64VarIntCodec(4));
   }
 }