com.clickhouse.benchmark.misc.CompareBenchmark Maven / Gradle / Ivy
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Benchmarks for ClickHouse clients
package com.clickhouse.benchmark.misc;
import java.util.concurrent.TimeUnit;
import org.openjdk.jmh.annotations.Benchmark;
import org.openjdk.jmh.annotations.BenchmarkMode;
import org.openjdk.jmh.annotations.Fork;
import org.openjdk.jmh.annotations.Level;
import org.openjdk.jmh.annotations.Measurement;
import org.openjdk.jmh.annotations.Mode;
import org.openjdk.jmh.annotations.OutputTimeUnit;
import org.openjdk.jmh.annotations.Scope;
import org.openjdk.jmh.annotations.Setup;
import org.openjdk.jmh.annotations.State;
import org.openjdk.jmh.annotations.Threads;
import org.openjdk.jmh.annotations.Warmup;
import org.openjdk.jmh.infra.Blackhole;
import com.clickhouse.benchmark.BaseState;
@State(Scope.Benchmark)
@Warmup(iterations = 10, timeUnit = TimeUnit.SECONDS, time = 1)
@Measurement(iterations = 10, timeUnit = TimeUnit.SECONDS, time = 1)
@Fork(value = 2)
@Threads(value = -1)
@BenchmarkMode(Mode.Throughput)
@OutputTimeUnit(TimeUnit.SECONDS)
public class CompareBenchmark {
@State(Scope.Thread)
public static class CompareState extends BaseState {
public int samples;
public Object num;
@Setup(Level.Trial)
public void setupSamples() {
samples = 500000;
}
@Setup(Level.Iteration)
public void initValueClass() {
num = (byte) getRandomNumber(Byte.MAX_VALUE);
}
}
@Benchmark
public void compareClass(CompareState state, Blackhole consumer) {
for (int i = 0; i < state.samples; i++) {
byte b = -1;
if (state.num.getClass() == Byte.class) {
b = (byte) state.num;
}
consumer.consume(b);
}
}
@Benchmark
public void instanceOf(CompareState state, Blackhole consumer) {
for (int i = 0; i < state.samples; i++) {
byte b = -1;
if (state.num instanceof Number) {
b = ((Number) state.num).byteValue();
}
consumer.consume(b);
}
}
}