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AlephFormatter.java
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AlephFormatter.java
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package strings;
import org.openjdk.jmh.annotations.*;
import org.openjdk.jmh.infra.Blackhole;
import org.openjdk.jmh.runner.Runner;
import org.openjdk.jmh.runner.RunnerException;
import org.openjdk.jmh.runner.options.Options;
import org.openjdk.jmh.runner.options.OptionsBuilder;
import static net.andreinc.aleph.AlephFormatter.str;
import java.util.concurrent.TimeUnit;
@BenchmarkMode(Mode.AverageTime)
@OutputTimeUnit(TimeUnit.NANOSECONDS)
@State(Scope.Benchmark)
@Fork(value = 2, jvmArgs = {"-Xms6G", "-Xmx6G"})
@Warmup(iterations = 3)
@Measurement(iterations = 5)
/*
CPU: AMD Ryzen 7 5800x, PBO
Windows Version 10.0.19041 Build 19041
Benchmark (N) Mode Cnt Score Error Units
AlephFormatter.alephFormat 1 avgt 5 67.101 ± 2.103 ns/op
AlephFormatter.stringFormat 1 avgt 5 273.048 ± 5.632 ns/op
AlephFormatter.alephFormat 10 avgt 5 76.470 ± 4.423 ns/op
AlephFormatter.stringFormat 10 avgt 5 264.106 ± 3.018 ns/op
AlephFormatter.alephFormat 100 avgt 5 113.705 ± 5.941 ns/op
AlephFormatter.stringFormat 100 avgt 5 328.445 ± 15.986 ns/op
AlephFormatter.alephFormat 1000 avgt 5 257.674 ± 19.363 ns/op
AlephFormatter.stringFormat 1000 avgt 5 437.688 ± 11.813 ns/op
*/
public class AlephFormatter {
@Param({"1", "10", "100", "1000"})
private int N;
private String unit;
public static void main(String[] args) throws RunnerException {
Options opt = new OptionsBuilder()
.include(AlephFormatter.class.getSimpleName())
.forks(1)
.build();
new Runner(opt).run();
}
@Setup
public void setup() {
var temp = String.valueOf(Math.random());
unit = temp.repeat(1 + (N / temp.length())).substring(0, N);
}
@Benchmark
public void stringFormat(Blackhole bh) {
bh.consume(String.format("%s", unit));
}
@Benchmark
public void alephFormat(Blackhole bh) {
bh.consume(str("#{0}", unit).fmt());
}
}