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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.collections;
import java.util.*;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
/**
* @author baldersheim
*/
public class CollectionsBenchMark {
abstract static class BenchMark {
protected BenchMark(int numWarmup, int repetitions) {
this.numWarmup = numWarmup;
this.repetitions = repetitions;
}
abstract void runOnce();
abstract String getEndComment();
protected void run() {
System.out.println("Starting benchmark warmup '" + getClass().getName() + "'.");
for (int i=0; i < numWarmup; i++) {
runOnce();
}
System.out.println("Starting benchmark '" + getClass().getName() + "'.");
long startTime=System.currentTimeMillis();
for (int i=0; i < repetitions; i++) {
runOnce();
}
long endTime=System.currentTimeMillis();
long totalTime=(endTime-startTime);
System.out.println("Done in " + totalTime + " ms (" + ((float) totalTime * 1000 / repetitions + " microsecond per repetition.)")); // *2 because we do 2 gets
System.out.println("Final remark: " + getEndComment());
}
final private int repetitions;
final private int numWarmup;
}
static class MapFilterBenchMark extends BenchMark {
MapFilterBenchMark(Map<Integer, Integer> s, int numWarmup, int numRepetitions, int numObjects) {
super(numWarmup, numRepetitions);
this.s = s;
objects = new Integer[numObjects];
for (int i=0; i < numObjects; i++) {
objects[i] = i;
}
}
void runOnce() {
for (Integer o : objects) {
if (s.put(o, o) == null) {
uniqueCount += o;
}
}
}
String getEndComment() { return " Unique sum is '" + uniqueCount + "'"; }
private final Map<Integer,Integer> s;
final Integer [] objects;
long uniqueCount = 0;
}
static class SetFilterBenchMark extends BenchMark {
SetFilterBenchMark(Set<Integer> s, int numWarmup, int numRepetitions, int numObjects) {
super(numWarmup, numRepetitions);
this.s = s;
objects = new Integer[numObjects];
for (int i=0; i < numObjects; i++) {
objects[i] = i;
}
}
void runOnce() {
for (Integer o : objects) {
if ( s.add(o) ) {
uniqueCount += o;
}
}
}
String getEndComment() { return " Unique sum is '" + uniqueCount + "'"; }
private final Set<Integer> s;
final Integer [] objects;
long uniqueCount = 0;
}
static abstract class SmallMapsBenchMark extends BenchMark {
SmallMapsBenchMark(int numWarmup, int numRepetitions, int numObjects, int numUnique) {
super(numWarmup, numRepetitions);
objects = new Integer[numObjects];
for (int i=0; i < numObjects; i++) {
objects[i] = i%numUnique;
}
}
void runOnce() {
Set<Integer> s = createSet();
for (Integer o : objects) {
if ( s.add(o) ) {
uniqueCount += o;
}
}
}
abstract Set<Integer> createSet();
String getEndComment() { return " Unique sum is '" + uniqueCount + "'"; }
final Integer [] objects;
long uniqueCount = 0;
}
static class SmallHashSetBenchMark extends SmallMapsBenchMark
{
SmallHashSetBenchMark(int numWarmup, int numRepetitions, int numObjects, int numUnique) {
super(numWarmup, numRepetitions, numObjects, numUnique);
}
Set<Integer> createSet() { return new HashSet<Integer>();}
}
static class SmallLazySetBenchMark extends SmallMapsBenchMark
{
SmallLazySetBenchMark(int numWarmup, int numRepetitions, int numObjects, int numUnique) {
super(numWarmup, numRepetitions, numObjects, numUnique);
}
Set<Integer> createSet() { return new LazySet<Integer>() {
@Override
protected Set<Integer> newDelegate() {
return new HashSet<Integer>();
}
};
}
}
static class SmallLazyTinyBenchMark extends SmallMapsBenchMark
{
SmallLazyTinyBenchMark(int numWarmup, int numRepetitions, int numObjects, int numUnique) {
super(numWarmup, numRepetitions, numObjects, numUnique);
}
Set<Integer> createSet() { return new LazySet<Integer>() {
@Override
protected Set<Integer> newDelegate() {
return new TinyIdentitySet<Integer>(10);
}
};
}
}
static void benchMarkAll() {
new MapFilterBenchMark(new HashMap<Integer, Integer>(), 100000, 10000000, 10).run();
new MapFilterBenchMark(new IdentityHashMap<Integer, Integer>(10), 100000, 10000000, 10).run();
new SetFilterBenchMark(new HashSet<Integer>(), 100000, 10000000, 10).run();
new SetFilterBenchMark(new TinyIdentitySet<Integer>(10), 100000, 10000000, 10).run();
new SetFilterBenchMark(new TinyIdentitySet<Integer>(10), 100000, 10000000, 15).run();
new SetFilterBenchMark(new TinyIdentitySet<Integer>(10), 100000, 10000000, 20).run();
new SetFilterBenchMark(new TinyIdentitySet<Integer>(20), 100000, 10000000, 20).run();
new SmallHashSetBenchMark(100000, 10000000, 10, 1).run();
new SmallLazySetBenchMark(100000, 10000000, 10, 1).run();
new SmallHashSetBenchMark(100000, 10000000, 10, 2).run();
new SmallLazySetBenchMark(100000, 10000000, 10, 2).run();
new SmallLazyTinyBenchMark(100000, 10000000, 10, 2).run();
new SmallHashSetBenchMark(100000, 10000000, 10, 10).run();
new SmallLazySetBenchMark(100000, 10000000, 10, 10).run();
new SetFilterBenchMark(new HashSet<Integer>(), 100000, 10000000, 12).run();
new SetFilterBenchMark(new HashSet<Integer>(), 100000, 10000000, 20).run();
new SetFilterBenchMark(new HashSet<Integer>(), 100000, 10000000, 25).run();
new SetFilterBenchMark(new HashSet<Integer>(), 100000, 10000000, 30).run();
new SmallHashSetBenchMark(100000, 10000000, 1, 1).run();
}
static void benchMark() {
//new MapFilterBenchMark(new HashMap<Integer, Integer>(), 100000, 10000000, 10).run();
//new MapFilterBenchMark(new IdentityHashMap<Integer, Integer>(10), 100000, 10000000, 10).run();
//new SetFilterBenchMark(new HashSet<Integer>(), 100000, 10000000, 10).run();
//new SetFilterBenchMark(new TinyIdentitySet<Integer>(10), 100000, 10000000, 10).run();
//new SmallHashSetBenchMark(100000, 10000000, 10, 1).run();
//new SmallLazySetBenchMark(100000, 10000000, 10, 1).run();
//new SmallHashSetBenchMark(100000, 10000000, 10, 2).run();
//new SmallLazySetBenchMark(100000, 10000000, 10, 2).run();
new SmallLazyTinyBenchMark(100000, 10000000, 10, 2).run();
//new SmallHashSetBenchMark(100000, 10000000, 10, 10).run();
//new SmallLazySetBenchMark(100000, 10000000, 10, 10).run();
//new SetFilterBenchMark(new HashSet<Integer>(), 100000, 10000000, 12).run();
//new SetFilterBenchMark(new HashSet<Integer>(), 100000, 10000000, 20).run();
//new SetFilterBenchMark(new HashSet<Integer>(), 100000, 10000000, 25).run();
//new SetFilterBenchMark(new HashSet<Integer>(), 100000, 10000000, 30).run();
//new SmallHashSetBenchMark(100000, 10000000, 1, 1).run();
}
static public void main(String argv[]) {
benchMarkAll();
ExecutorService tp = Executors.newFixedThreadPool(16);
for (int i=0; i < 16; i++) {
tp.execute(new Runnable() {
@Override
public void run() {
benchMark();
}
});
}
}
}
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