More realistic ByteBuf allocation benchmark
Motivation: Allocating a single buffer and releasing it repetitively for a benchmark will not involve the realistic execution path of the allocators. Modifications: Keep the last 8192 allocations and release them randomly. Result: We are now getting the result close to what we got with caliper.
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@ -23,41 +23,64 @@ import io.netty.microbench.util.AbstractMicrobenchmark;
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import org.openjdk.jmh.annotations.GenerateMicroBenchmark;
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import org.openjdk.jmh.annotations.GenerateMicroBenchmark;
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import org.openjdk.jmh.annotations.Param;
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import org.openjdk.jmh.annotations.Param;
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import java.util.Random;
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/**
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/**
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* This class benchmarks different allocators with different allocation sizes.
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* This class benchmarks different allocators with different allocation sizes.
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*/
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*/
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public class ByteBufAllocatorBenchmark extends AbstractMicrobenchmark {
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public class ByteBufAllocatorBenchmark extends AbstractMicrobenchmark {
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private final ByteBufAllocator unpooledHeapAllocator = new UnpooledByteBufAllocator(false);
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private static final ByteBufAllocator unpooledAllocator = new UnpooledByteBufAllocator(true);
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private final ByteBufAllocator unpooledDirectAllocator = new UnpooledByteBufAllocator(true);
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private static final ByteBufAllocator pooledAllocator =
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private final ByteBufAllocator pooledHeapAllocator = new PooledByteBufAllocator(false);
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new PooledByteBufAllocator(true, 4, 4, 8192, 11, 0, 0, 0); // Disable thread-local cache
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private final ByteBufAllocator pooledDirectAllocator = new PooledByteBufAllocator(true);
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private static final int MAX_LIVE_BUFFERS = 8192;
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private static final Random rand = new Random();
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private static final ByteBuf[] unpooledHeapBuffers = new ByteBuf[MAX_LIVE_BUFFERS];
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private static final ByteBuf[] unpooledDirectBuffers = new ByteBuf[MAX_LIVE_BUFFERS];
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private static final ByteBuf[] pooledHeapBuffers = new ByteBuf[MAX_LIVE_BUFFERS];
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private static final ByteBuf[] pooledDirectBuffers = new ByteBuf[MAX_LIVE_BUFFERS];
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@Param({ "00000", "00256", "01024", "04096", "16384", "65536" })
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@Param({ "00000", "00256", "01024", "04096", "16384", "65536" })
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public int size;
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public int size;
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@GenerateMicroBenchmark
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@GenerateMicroBenchmark
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public void unpooledHeapAllocAndFree() {
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public void unpooledHeapAllocAndFree() {
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ByteBuf buffer = unpooledHeapAllocator.buffer(size);
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int idx = rand.nextInt(unpooledHeapBuffers.length);
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buffer.release();
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ByteBuf oldBuf = unpooledHeapBuffers[idx];
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if (oldBuf != null) {
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oldBuf.release();
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}
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unpooledHeapBuffers[idx] = unpooledAllocator.heapBuffer(size);
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}
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}
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@GenerateMicroBenchmark
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@GenerateMicroBenchmark
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public void unpooledDirectAllocAndFree() {
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public void unpooledDirectAllocAndFree() {
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ByteBuf buffer = unpooledDirectAllocator.buffer(size);
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int idx = rand.nextInt(unpooledDirectBuffers.length);
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buffer.release();
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ByteBuf oldBuf = unpooledDirectBuffers[idx];
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if (oldBuf != null) {
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oldBuf.release();
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}
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unpooledDirectBuffers[idx] = unpooledAllocator.directBuffer(size);
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}
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}
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@GenerateMicroBenchmark
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@GenerateMicroBenchmark
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public void pooledHeapAllocAndFree() {
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public void pooledHeapAllocAndFree() {
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ByteBuf buffer = pooledHeapAllocator.buffer(size);
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int idx = rand.nextInt(pooledHeapBuffers.length);
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buffer.release();
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ByteBuf oldBuf = pooledHeapBuffers[idx];
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if (oldBuf != null) {
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oldBuf.release();
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}
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pooledHeapBuffers[idx] = pooledAllocator.heapBuffer(size);
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}
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}
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@GenerateMicroBenchmark
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@GenerateMicroBenchmark
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public void pooledDirectAllocAndFree() {
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public void pooledDirectAllocAndFree() {
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ByteBuf buffer = pooledDirectAllocator.buffer(size);
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int idx = rand.nextInt(pooledDirectBuffers.length);
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buffer.release();
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ByteBuf oldBuf = pooledDirectBuffers[idx];
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if (oldBuf != null) {
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oldBuf.release();
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}
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pooledDirectBuffers[idx] = pooledAllocator.directBuffer(size);
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}
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}
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}
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}
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@ -27,7 +27,6 @@ import org.openjdk.jmh.output.results.ResultFormatType;
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import org.openjdk.jmh.runner.Runner;
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import org.openjdk.jmh.runner.Runner;
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import org.openjdk.jmh.runner.options.ChainedOptionsBuilder;
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import org.openjdk.jmh.runner.options.ChainedOptionsBuilder;
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import org.openjdk.jmh.runner.options.OptionsBuilder;
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import org.openjdk.jmh.runner.options.OptionsBuilder;
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import org.openjdk.jmh.runner.options.VerboseMode;
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import java.io.File;
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import java.io.File;
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@ -44,7 +43,7 @@ public class AbstractMicrobenchmark {
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protected static final int DEFAULT_MEASURE_ITERATIONS = 10;
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protected static final int DEFAULT_MEASURE_ITERATIONS = 10;
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protected static final int DEFAULT_FORKS = 2;
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protected static final int DEFAULT_FORKS = 2;
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protected static final String[] JVM_ARGS = new String[] {
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protected static final String[] JVM_ARGS = {
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"-server", "-dsa", "-da", "-ea:io.netty...", "-Xms768m", "-Xmx768m",
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"-server", "-dsa", "-da", "-ea:io.netty...", "-Xms768m", "-Xmx768m",
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"-XX:MaxDirectMemorySize=768m", "-XX:+AggressiveOpts", "-XX:+UseBiasedLocking",
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"-XX:MaxDirectMemorySize=768m", "-XX:+AggressiveOpts", "-XX:+UseBiasedLocking",
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"-XX:+UseFastAccessorMethods", "-XX:+UseStringCache", "-XX:+OptimizeStringConcat",
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"-XX:+UseFastAccessorMethods", "-XX:+UseStringCache", "-XX:+OptimizeStringConcat",
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