add JavascriptAggregatorBenchmark

processing/src/test/java/io/druid/query/aggregation/JavaScriptAggregatorBenchmark.java

+/*
+ * Druid - a distributed column store.
+ * Copyright (C) 2012, 2013, 2014  Metamarkets Group Inc.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program 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 for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ */
+
+package io.druid.query.aggregation;
+
+import com.google.caliper.Runner;
+import com.google.caliper.SimpleBenchmark;
+import com.google.common.collect.Lists;
+import com.google.common.collect.Maps;
+import io.druid.segment.ObjectColumnSelector;
+
+import java.util.Map;
+
+public class JavaScriptAggregatorBenchmark extends SimpleBenchmark
+{
+
+  protected static final Map<String, String> scriptDoubleSum = Maps.newHashMap();
+  static {
+    scriptDoubleSum.put("fnAggregate", "function aggregate(current, a) { return current + a }");
+    scriptDoubleSum.put("fnReset", "function reset() { return 0 }");
+    scriptDoubleSum.put("fnCombine", "function combine(a,b) { return a + b }");
+  }
+
+  private static void aggregate(TestFloatColumnSelector selector, Aggregator agg)
+  {
+    agg.aggregate();
+    selector.increment();
+  }
+
+  private JavaScriptAggregator jsAggregator;
+  private DoubleSumAggregator doubleAgg;
+  final LoopingFloatColumnSelector selector = new LoopingFloatColumnSelector(new float[]{42.12f, 9f});
+
+  @Override
+  protected void setUp() throws Exception
+  {
+    Map<String, String> script = scriptDoubleSum;
+
+    jsAggregator = new JavaScriptAggregator(
+        "billy",
+        Lists.asList(MetricSelectorUtils.wrap(selector), new ObjectColumnSelector[]{}),
+        JavaScriptAggregatorFactory.compileScript(
+            script.get("fnAggregate"),
+            script.get("fnReset"),
+            script.get("fnCombine")
+        )
+    );
+
+    doubleAgg = new DoubleSumAggregator("billy", selector);
+  }
+
+  public double timeJavaScriptDoubleSum(int reps)
+  {
+    double val = 0;
+    for(int i = 0; i < reps; ++i) {
+      aggregate(selector, jsAggregator);
+    }
+    return val;
+  }
+
+  public double timeNativeDoubleSum(int reps)
+  {
+    double val = 0;
+    for(int i = 0; i < reps; ++i) {
+      aggregate(selector, doubleAgg);
+    }
+    return val;
+  }
+
+  public static void main(String[] args) throws Exception
+  {
+    Runner.main(JavaScriptAggregatorBenchmark.class, args);
+  }
+
+  protected static class LoopingFloatColumnSelector extends TestFloatColumnSelector
+  {
+    private final float[] floats;
+    private long index = 0;
+
+    public LoopingFloatColumnSelector(float[] floats)
+    {
+      super(floats);
+      this.floats = floats;
+    }
+
+    @Override
+    public float get()
+    {
+      return floats[(int) (index % floats.length)];
+    }
+
+    public void increment()
+    {
+      ++index;
+      if (index < 0) {
+        index = 0;
+      }
+    }
+  }
+}

processing/src/test/java/io/druid/query/aggregation/JavaScriptAggregatorTest.java

@@ -223,7 +223,7 @@ public class JavaScriptAggregatorTest
   }
 
   public static void main(String... args) throws Exception {
-    final LoopingFloatColumnSelector selector = new LoopingFloatColumnSelector(new float[]{42.12f, 9f});
+    final JavaScriptAggregatorBenchmark.LoopingFloatColumnSelector selector = new JavaScriptAggregatorBenchmark.LoopingFloatColumnSelector(new float[]{42.12f, 9f});
 
     /* memory usage test
     List<JavaScriptAggregator> aggs = Lists.newLinkedList();
@@ -286,30 +286,4 @@ public class JavaScriptAggregatorTest
 
     System.out.println(String.format("JavaScript is %2.1fx slower", (double)t1 / t2));
   }
-
-  static class LoopingFloatColumnSelector extends TestFloatColumnSelector
-  {
-    private final float[] floats;
-    private long index = 0;
-
-    public LoopingFloatColumnSelector(float[] floats)
-    {
-      super(floats);
-      this.floats = floats;
-    }
-
-    @Override
-    public float get()
-    {
-      return floats[(int)(index % floats.length)];
-    }
-
-    public void increment()
-    {
-      ++index;
-      if (index < 0) {
-        index = 0;
-      }
-    }
-  }
 }