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Merged
leerho merged 1 commit into from
Aug 4, 2015
Merged

An initial benchmark "framework" for benchmarking sketches #4

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129 changes: 129 additions & 0 deletions src/test/java/com/yahoo/sketches/benchmark/BenchmarkMain.java
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package com.yahoo.sketches.benchmark;

import java.util.ArrayList;
import java.util.List;

/**
*/
public class BenchmarkMain
{
public static void main(String[] args)
{
List<SketchBenchmark> benchmarks = new ArrayList<SketchBenchmark>(){{
this.add(new ThetaBenchmark(13));
this.add(new ThetaMemoryBenchmark(13));
}};

runBenchmarks(benchmarks, 20, 300, powerLawDistribution);
}

private static void runBenchmarks(
List<SketchBenchmark> benchmarks,
int increment,
int numTimes,
List<SketchBenchmark.Spec> distribution
)
{
int numSketches = 0;
for (SketchBenchmark.Spec spec : distribution) {
numSketches += spec.getNumSketches();
}

for (SketchBenchmark benchmark : benchmarks) {
System.out.printf("Starting benchmark[%s]%n", benchmark);
long start = System.currentTimeMillis();
benchmark.setup(numSketches, powerLawDistribution);
System.out.printf("benchmark[%s] setup done in %,d millis.%n", benchmark, System.currentTimeMillis() - start);
start = System.currentTimeMillis();
benchmark.runNTimes(increment);
System.out.printf("benchmark[%s] priming[%s] done in %,d millis.%n", benchmark, increment, System.currentTimeMillis() - start);
doGC();


for (int i = 0; i < numTimes; i+=increment) {
start = System.currentTimeMillis();
benchmark.runNTimes(increment);
long time = System.currentTimeMillis() - start;
System.out.printf(
"Benchmark[%s], %,d runs => %,d millis (%,d ms/run), %,d/sec%n",
benchmark,
i + increment,
time,
(int) (time / (double) increment),
(int) ((1000 / (time / (double) increment)) * numSketches)
);
doGC();
}
System.out.printf("Done with benchmark[%s]%n", benchmark);
}
}

private static void doGC()
{
for (int i = 0; i < 10; ++i) {
System.gc();
}
}


public static List<SketchBenchmark.Spec> powerLawDistribution = new ArrayList<SketchBenchmark.Spec>(){{
this.add(new SketchBenchmark.Spec(0, 44129));
this.add(new SketchBenchmark.Spec(1, 431561));
this.add(new SketchBenchmark.Spec(2, 129063));
this.add(new SketchBenchmark.Spec(3, 64821));
this.add(new SketchBenchmark.Spec(4, 67522));
this.add(new SketchBenchmark.Spec(6, 20291));
this.add(new SketchBenchmark.Spec(7, 15767));
this.add(new SketchBenchmark.Spec(8, 22975));
this.add(new SketchBenchmark.Spec(11, 22441));
this.add(new SketchBenchmark.Spec(14, 14531));
this.add(new SketchBenchmark.Spec(17, 13472));
this.add(new SketchBenchmark.Spec(22, 13253));
this.add(new SketchBenchmark.Spec(28, 9002));
this.add(new SketchBenchmark.Spec(35, 8406));
this.add(new SketchBenchmark.Spec(45, 7618));
this.add(new SketchBenchmark.Spec(57, 6349));
this.add(new SketchBenchmark.Spec(71, 5194));
this.add(new SketchBenchmark.Spec(89, 4524));
this.add(new SketchBenchmark.Spec(112, 4032));
this.add(new SketchBenchmark.Spec(141, 3397));
this.add(new SketchBenchmark.Spec(178, 2935));
this.add(new SketchBenchmark.Spec(224, 2516));
this.add(new SketchBenchmark.Spec(282, 2118));
this.add(new SketchBenchmark.Spec(355, 1825));
this.add(new SketchBenchmark.Spec(447, 1527));
this.add(new SketchBenchmark.Spec(561, 1269));
this.add(new SketchBenchmark.Spec(709, 1088));
this.add(new SketchBenchmark.Spec(890, 900));
this.add(new SketchBenchmark.Spec(1118, 767));
this.add(new SketchBenchmark.Spec(1410, 654));
this.add(new SketchBenchmark.Spec(1776, 550));
this.add(new SketchBenchmark.Spec(2246, 469));
this.add(new SketchBenchmark.Spec(2813, 353));
this.add(new SketchBenchmark.Spec(3552, 325));
this.add(new SketchBenchmark.Spec(4472, 252));
this.add(new SketchBenchmark.Spec(5639, 249));
this.add(new SketchBenchmark.Spec(7022, 187));
this.add(new SketchBenchmark.Spec(8952, 150));
this.add(new SketchBenchmark.Spec(11270, 138));
this.add(new SketchBenchmark.Spec(14198, 106));
this.add(new SketchBenchmark.Spec(17544, 74));
this.add(new SketchBenchmark.Spec(22145, 81));
this.add(new SketchBenchmark.Spec(27848, 50));
this.add(new SketchBenchmark.Spec(35319, 58));
this.add(new SketchBenchmark.Spec(44267, 33));
this.add(new SketchBenchmark.Spec(55292, 22));
this.add(new SketchBenchmark.Spec(72264, 10));
this.add(new SketchBenchmark.Spec(88903, 13));
this.add(new SketchBenchmark.Spec(111538, 12));
this.add(new SketchBenchmark.Spec(136481, 11));
this.add(new SketchBenchmark.Spec(178605, 6));
this.add(new SketchBenchmark.Spec(215707, 5));
this.add(new SketchBenchmark.Spec(273075, 5));
this.add(new SketchBenchmark.Spec(362878, 5));
this.add(new SketchBenchmark.Spec(546015, 1));
this.add(new SketchBenchmark.Spec(1106004, 2));
this.add(new SketchBenchmark.Spec(1766259, 2));
}};

}
33 changes: 33 additions & 0 deletions src/test/java/com/yahoo/sketches/benchmark/SketchBenchmark.java
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package com.yahoo.sketches.benchmark;

import java.util.List;

/**
*/
public interface SketchBenchmark
{
public void setup(int numSketches, List<Spec> specs);
public void runNTimes(int n);
public void reset();

public class Spec {
private final int numSketches;
private final long numEntries;

public Spec(long numEntries, int numSketches) {

this.numSketches = numSketches;
this.numEntries = numEntries;
}

public int getNumSketches()
{
return numSketches;
}

public long getNumEntries()
{
return numEntries;
}
}
}
82 changes: 82 additions & 0 deletions src/test/java/com/yahoo/sketches/benchmark/ThetaBenchmark.java
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package com.yahoo.sketches.benchmark;

import com.yahoo.sketches.Family;
import com.yahoo.sketches.theta.CompactSketch;
import com.yahoo.sketches.theta.SetOperation;
import com.yahoo.sketches.theta.Sketch;
import com.yahoo.sketches.theta.Union;
import com.yahoo.sketches.theta.UpdateSketch;

import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.Random;

/**
*/
public class ThetaBenchmark implements SketchBenchmark
{
private final int nominalEntries;
private final Random rand;

private List<CompactSketch> sketches;

public ThetaBenchmark(int K) {
this.nominalEntries = 1 << K;
this.rand = new Random(K);
}

@Override
public void setup(int numSketches, List<Spec> specs)
{
sketches = new ArrayList<>(numSketches);

for (Spec spec : specs) {
for (int i = 0; i < spec.getNumSketches(); ++i) {
UpdateSketch sketch = UpdateSketch.builder().build(nominalEntries);
for (int j = 0; j < spec.getNumEntries(); ++j) {
sketch.update(rand.nextLong());
}

sketches.add(sketch.rebuild().compact(true, null));
}
}
Collections.shuffle(sketches, rand);

int numRetained = 0;
int numEstimating = 0;
for (CompactSketch sketch : sketches) {
numRetained += sketch.getRetainedEntries(true);
if (sketch.isEstimationMode()) {
++numEstimating;
}
}
System.out.printf(
"%,d entries, %,d/sketch, %,d estimating (%.2f%%)%n",
numRetained, numRetained / sketches.size(), numEstimating, (100 * numEstimating) / (double) sketches.size()
);
}

@Override
public void runNTimes(int n)
{
for (int i = 0; i < n; ++i) {
Union combined = (Union) SetOperation.builder().build(nominalEntries, Family.UNION);
for (Object toUnion : sketches) {
combined.update((Sketch) toUnion);
}
}
}

@Override
public void reset()
{
sketches = null;
}

@Override
public String toString()
{
return String.format("Theta OnHeap Benchmark(nominalEntries=%s)", nominalEntries);
}
}
88 changes: 88 additions & 0 deletions src/test/java/com/yahoo/sketches/benchmark/ThetaMemoryBenchmark.java
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package com.yahoo.sketches.benchmark;

import com.yahoo.sketches.Family;
import com.yahoo.sketches.memory.Memory;
import com.yahoo.sketches.memory.NativeMemory;
import com.yahoo.sketches.theta.SetOperation;
import com.yahoo.sketches.theta.Sketch;
import com.yahoo.sketches.theta.Union;
import com.yahoo.sketches.theta.UpdateSketch;

import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.Random;

/**
*/
public class ThetaMemoryBenchmark implements SketchBenchmark
{
private final int nominalEntries;
private final Random rand;
private final byte[] bytes;

private List<Memory> memories;

public ThetaMemoryBenchmark(int K) {
this.nominalEntries = 1 << K;
this.rand = new Random(K);
this.bytes = new byte[Sketch.getMaxUpdateSketchBytes(nominalEntries) + 8];
}

@Override
public void setup(int numSketches, List<Spec> specs)
{
memories = new ArrayList<>(numSketches);

for (Spec spec : specs) {
for (int i = 0; i < spec.getNumSketches(); ++i) {
UpdateSketch sketch = UpdateSketch.builder().build(nominalEntries);
for (int j = 0; j < spec.getNumEntries(); ++j) {
sketch.update(rand.nextLong());
}
memories.add(new NativeMemory(sketch.rebuild().compact(true, null).toByteArray()));
}
}
Collections.shuffle(memories, rand);

int numRetained = 0;
int numEstimating = 0;
for (Memory mem : memories) {
Sketch sketch = Sketch.wrap(mem);
numRetained += sketch.getRetainedEntries(true);
if (sketch.isEstimationMode()) {
++numEstimating;
}
}
System.out.printf(
"%,d entries, %,d/sketch, %,d estimating (%.2f%%)%n",
numRetained, numRetained / memories.size(), numEstimating, (100 * numEstimating) / (double) memories.size()
);
}

@Override
public void runNTimes(int n)
{
for (int i = 0; i < n; ++i) {
Union combined = (Union) SetOperation
.builder()
.setMemory(new NativeMemory(bytes))
.build(nominalEntries, Family.UNION);
for (Memory toUnion : memories) {
combined.update(toUnion);
}
}
}

@Override
public void reset()
{
memories = null;
}

@Override
public String toString()
{
return String.format("Theta Memory Benchmark(nominalEntries=%s)", nominalEntries);
}
}