Split up benchmarks into specific types for serialization and deserialization.
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114633fbf9
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4fc0577933
@ -17,12 +17,11 @@ package com.google.gson.metrics;
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import java.io.IOException;
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import java.io.IOException;
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import java.io.StringReader;
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import java.io.StringReader;
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import java.lang.reflect.Field;
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import com.google.caliper.Param;
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import com.google.caliper.Runner;
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import com.google.caliper.Runner;
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import com.google.caliper.SimpleBenchmark;
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import com.google.caliper.SimpleBenchmark;
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import com.google.gson.Gson;
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import com.google.gson.Gson;
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import com.google.gson.GsonBuilder;
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import com.google.gson.stream.JsonReader;
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import com.google.gson.stream.JsonReader;
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/**
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/**
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@ -32,38 +31,35 @@ import com.google.gson.stream.JsonReader;
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* @author Jesse Wilson
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* @author Jesse Wilson
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* @author Joel Leitch
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* @author Joel Leitch
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*/
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*/
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public class GsonBenchmark extends SimpleBenchmark {
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public class BagOfPrimitivesDeserializationBenchmark extends SimpleBenchmark {
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private Gson gson;
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private Gson gson;
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private BagOfPrimitives bag;
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private String json;
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private String json;
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@Param
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private boolean pretty;
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public static void main(String[] args) {
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public static void main(String[] args) {
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Runner.main(GsonBenchmark.class, args);
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Runner.main(BagOfPrimitivesDeserializationBenchmark.class, args);
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}
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}
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@Override
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@Override
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protected void setUp() throws Exception {
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protected void setUp() throws Exception {
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this.gson = pretty ? new GsonBuilder().setPrettyPrinting().create() : new Gson();
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this.gson = new Gson();
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this.bag = new BagOfPrimitives(10L, 1, false, "foo");
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BagOfPrimitives bag = new BagOfPrimitives(10L, 1, false, "foo");
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this.json = gson.toJson(bag);
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this.json = gson.toJson(bag);
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}
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}
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public void timeObjectSerialization(int reps) {
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/**
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for (int i=0; i<reps; ++i) {
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* Benchmark to measure Gson performance for deserializing an object
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gson.toJson(bag);
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*/
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}
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public void timeBagOfPrimitivesDefault(int reps) {
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}
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public void timeObjectDeserialization(int reps) {
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for (int i=0; i<reps; ++i) {
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for (int i=0; i<reps; ++i) {
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gson.fromJson(json, BagOfPrimitives.class);
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gson.fromJson(json, BagOfPrimitives.class);
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}
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}
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}
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}
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public void timeStreamingParserDeserialization(int reps) throws IOException {
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/**
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* Benchmark to measure deserializing objects by hand
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*/
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public void timeBagOfPrimitivesStreaming(int reps) throws IOException {
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for (int i=0; i<reps; ++i) {
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for (int i=0; i<reps; ++i) {
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StringReader reader = new StringReader(json);
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StringReader reader = new StringReader(json);
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JsonReader jr = new JsonReader(reader);
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JsonReader jr = new JsonReader(reader);
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@ -90,4 +86,38 @@ public class GsonBenchmark extends SimpleBenchmark {
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new BagOfPrimitives(longValue, intValue, booleanValue, stringValue);
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new BagOfPrimitives(longValue, intValue, booleanValue, stringValue);
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}
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}
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}
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}
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/**
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* This benchmark measures the ideal Gson performance: the cost of parsing a JSON stream and
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* setting object values by reflection. We should strive to reduce the discrepancy between this
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* and {@link #timeBagOfPrimitivesDefault(int)} .
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*/
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public void timeBagOfPrimitivesReflectionStreaming(int reps) throws Exception {
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for (int i=0; i<reps; ++i) {
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StringReader reader = new StringReader(json);
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JsonReader jr = new JsonReader(reader);
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jr.beginObject();
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BagOfPrimitives bag = new BagOfPrimitives();
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while(jr.hasNext()) {
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String name = jr.nextName();
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for (Field field : BagOfPrimitives.class.getDeclaredFields()) {
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if (field.getName().equals(name)) {
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Class<?> fieldType = field.getType();
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if (fieldType.equals(long.class)) {
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field.setLong(bag, jr.nextLong());
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} else if (fieldType.equals(int.class)) {
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field.setInt(bag, jr.nextInt());
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} else if (fieldType.equals(boolean.class)) {
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field.setBoolean(bag, jr.nextBoolean());
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} else if (fieldType.equals(String.class)) {
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field.set(bag, jr.nextString());
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} else {
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throw new RuntimeException("Unexpected: type: " + fieldType + ", name: " + name);
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}
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}
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}
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}
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jr.endObject();
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}
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}
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}
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}
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@ -0,0 +1,140 @@
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/*
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* Copyright (C) 2011 Google Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.google.gson.metrics;
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import java.io.IOException;
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import java.io.StringReader;
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import java.lang.reflect.Field;
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import java.lang.reflect.Type;
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import java.util.ArrayList;
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import java.util.List;
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import com.google.caliper.Runner;
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import com.google.caliper.SimpleBenchmark;
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import com.google.gson.Gson;
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import com.google.gson.reflect.TypeToken;
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import com.google.gson.stream.JsonReader;
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/**
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* Caliper based micro benchmarks for Gson
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*
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* @author Inderjeet Singh
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*/
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public class CollectionsDeserializationBenchmark extends SimpleBenchmark {
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private static final Type LIST_TYPE = new TypeToken<List<BagOfPrimitives>>(){}.getType();
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private Gson gson;
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private String json;
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public static void main(String[] args) {
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Runner.main(CollectionsDeserializationBenchmark.class, args);
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}
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@Override
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protected void setUp() throws Exception {
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this.gson = new Gson();
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List<BagOfPrimitives> bags = new ArrayList<BagOfPrimitives>();
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for (int i = 0; i < 100; ++i) {
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bags.add(new BagOfPrimitives(10L, 1, false, "foo"));
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}
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this.json = gson.toJson(bags, LIST_TYPE);
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}
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/**
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* Benchmark to measure Gson performance for deserializing an object
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*/
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public void timeCollectionsDefault(int reps) {
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for (int i=0; i<reps; ++i) {
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gson.fromJson(json, LIST_TYPE);
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}
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}
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/**
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* Benchmark to measure deserializing objects by hand
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*/
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public void timeCollectionsStreaming(int reps) throws IOException {
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for (int i=0; i<reps; ++i) {
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StringReader reader = new StringReader(json);
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JsonReader jr = new JsonReader(reader);
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jr.beginArray();
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List<BagOfPrimitives> bags = new ArrayList<BagOfPrimitives>();
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while(jr.hasNext()) {
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jr.beginObject();
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long longValue = 0;
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int intValue = 0;
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boolean booleanValue = false;
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String stringValue = null;
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while(jr.hasNext()) {
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String name = jr.nextName();
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if (name.equals("longValue")) {
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longValue = jr.nextLong();
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} else if (name.equals("intValue")) {
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intValue = jr.nextInt();
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} else if (name.equals("booleanValue")) {
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booleanValue = jr.nextBoolean();
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} else if (name.equals("stringValue")) {
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stringValue = jr.nextString();
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} else {
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throw new IOException("Unexpected name: " + name);
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}
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}
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jr.endObject();
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bags.add(new BagOfPrimitives(longValue, intValue, booleanValue, stringValue));
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}
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jr.endArray();
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}
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}
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/**
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* This benchmark measures the ideal Gson performance: the cost of parsing a JSON stream and
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* setting object values by reflection. We should strive to reduce the discrepancy between this
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* and {@link #timeCollectionsDefault(int)} .
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*/
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public void timeCollectionsReflectionStreaming(int reps) throws Exception {
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for (int i=0; i<reps; ++i) {
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StringReader reader = new StringReader(json);
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JsonReader jr = new JsonReader(reader);
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jr.beginArray();
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List<BagOfPrimitives> bags = new ArrayList<BagOfPrimitives>();
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while(jr.hasNext()) {
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jr.beginObject();
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BagOfPrimitives bag = new BagOfPrimitives();
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while(jr.hasNext()) {
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String name = jr.nextName();
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for (Field field : BagOfPrimitives.class.getDeclaredFields()) {
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if (field.getName().equals(name)) {
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Class<?> fieldType = field.getType();
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if (fieldType.equals(long.class)) {
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field.setLong(bag, jr.nextLong());
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} else if (fieldType.equals(int.class)) {
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field.setInt(bag, jr.nextInt());
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} else if (fieldType.equals(boolean.class)) {
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field.setBoolean(bag, jr.nextBoolean());
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} else if (fieldType.equals(String.class)) {
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field.set(bag, jr.nextString());
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} else {
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throw new RuntimeException("Unexpected: type: " + fieldType + ", name: " + name);
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}
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}
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}
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}
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jr.endObject();
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bags.add(bag);
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}
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jr.endArray();
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}
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}
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}
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@ -0,0 +1,53 @@
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/*
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* Copyright (C) 2011 Google Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.google.gson.metrics;
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import com.google.caliper.Param;
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import com.google.caliper.Runner;
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import com.google.caliper.SimpleBenchmark;
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import com.google.gson.Gson;
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import com.google.gson.GsonBuilder;
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/**
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* Caliper based micro benchmarks for Gson serialization
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*
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* @author Inderjeet Singh
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* @author Jesse Wilson
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* @author Joel Leitch
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*/
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public class SerializationBenchmark extends SimpleBenchmark {
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private Gson gson;
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private BagOfPrimitives bag;
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@Param
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private boolean pretty;
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public static void main(String[] args) {
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Runner.main(SerializationBenchmark.class, args);
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}
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@Override
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protected void setUp() throws Exception {
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this.gson = pretty ? new GsonBuilder().setPrettyPrinting().create() : new Gson();
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this.bag = new BagOfPrimitives(10L, 1, false, "foo");
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}
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public void timeObjectSerialization(int reps) {
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for (int i=0; i<reps; ++i) {
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gson.toJson(bag);
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}
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}
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}
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