ByteBufAllocateAndGrowBenchmark.java — netty Source File

Source Code

/*
 * Copyright 2025 The Netty Project
 *
 * The Netty Project licenses this file to you under the Apache License,
 * version 2.0 (the "License"); you may not use this file except in compliance
 * with the License. You may obtain a copy of the License at:
 *
 *   https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations
 * under the License.
 */
package io.netty.microbench.buffer;

import io.netty.buffer.AdaptiveByteBufAllocator;
import io.netty.buffer.ByteBuf;
import io.netty.buffer.ByteBufAllocator;
import io.netty.buffer.PooledByteBufAllocator;
import io.netty.microbench.util.AbstractMicrobenchmark;
import org.openjdk.jmh.annotations.AuxCounters;
import org.openjdk.jmh.annotations.Benchmark;
import org.openjdk.jmh.annotations.Param;
import org.openjdk.jmh.annotations.Scope;
import org.openjdk.jmh.annotations.State;
import org.openjdk.jmh.annotations.TearDown;

import java.util.Arrays;
import java.util.List;
import java.util.Random;

/**
 * This class benchmarks different allocators with different allocation sizes.
 */
@State(Scope.Benchmark)
public class ByteBufAllocateAndGrowBenchmark extends AbstractMicrobenchmark {

    private static final ByteBufAllocator pooledAllocator = PooledByteBufAllocator.DEFAULT;
    private static final ByteBufAllocator adaptiveAllocator = new AdaptiveByteBufAllocator();

    private static final int MAX_LIVE_BUFFERS = 2048;
    private static final Random rand = new Random();
    private static final ByteBuf[] pooledDirectBuffers = new ByteBuf[MAX_LIVE_BUFFERS];
    private static final ByteBuf[] adaptiveDirectBuffers = new ByteBuf[MAX_LIVE_BUFFERS];

    @Param({
            "00256",
            "01024",
            "04096",
            "16384",
            "65536",
    })
    public int size;

    @TearDown
    public void releaseBuffers() {
        List<ByteBuf[]> bufferLists = Arrays.asList(
                pooledDirectBuffers,
// ... (66 more lines)