Benchmark to compare `UUID.randomUUID()`, `UuidCreator.getRandomBased()` and others using 4 threads in Java

README.md

How to prepare the benchmark files on Linux:

BASE="bench"

mkdir $BASE
cp run.sh $BASE/
cp run.bat $BASE/
cp pom.xml $BASE/
cp README.md $BASE/

mkdir --parents $BASE/src/main/java/benchmark
cp Throughput.java $BASE/src/main/java/benchmark/

To execute the benchmark, run the script $BASE/run.sh.

pom.xml

<!--
Copyright (c) 2014, Oracle America, Inc.
All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:

 * Redistributions of source code must retain the above copyright notice,
   this list of conditions and the following disclaimer.

 * Redistributions in binary form must reproduce the above copyright
   notice, this list of conditions and the following disclaimer in the
   documentation and/or other materials provided with the distribution.

 * Neither the name of Oracle nor the names of its contributors may be used
   to endorse or promote products derived from this software without
   specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
THE POSSIBILITY OF SUCH DAMAGE.
-->

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>com.example</groupId>
    <artifactId>benchmark</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>jar</packaging>

    <name>JMH benchmark sample: Java</name>

    <!--
       This is the demo/sample template build script for building Java benchmarks with JMH.
       Edit as needed.
    -->

    <properties>

        <!--
            JMH version to use with this project.
          -->
        <jmh.version>1.32</jmh.version>

        <!--
            Java source/target to use for compilation.
          -->
        <javac.target>1.8</javac.target>

        <!--
            Name of the benchmark Uber-JAR to generate.
          -->
        <uberjar.name>benchmarks</uberjar.name>
        
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    </properties>
    
    <dependencies>
        <dependency>
            <groupId>org.openjdk.jmh</groupId>
            <artifactId>jmh-core</artifactId>
            <version>${jmh.version}</version>
        </dependency>
        <dependency>
            <groupId>org.openjdk.jmh</groupId>
            <artifactId>jmh-generator-annprocess</artifactId>
            <version>${jmh.version}</version>
            <scope>provided</scope>
        </dependency>
        <dependency>
            <groupId>com.github.f4b6a3</groupId>
            <artifactId>uuid-creator</artifactId>
            <version>4.3.0</version>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.8.0</version>
                <configuration>
                    <compilerVersion>${javac.target}</compilerVersion>
                    <source>${javac.target}</source>
                    <target>${javac.target}</target>
                </configuration>
            </plugin>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-shade-plugin</artifactId>
                <version>3.2.1</version>
                <executions>
                    <execution>
                        <phase>package</phase>
                        <goals>
                            <goal>shade</goal>
                        </goals>
                        <configuration>
                            <finalName>${uberjar.name}</finalName>
                            <transformers>
                                <transformer implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
                                    <mainClass>org.openjdk.jmh.Main</mainClass>
                                </transformer>
                                <transformer implementation="org.apache.maven.plugins.shade.resource.ServicesResourceTransformer"/>
                            </transformers>
                            <filters>
                                <filter>
                                    <!--
                                        Shading signed JARs will fail without this.
                                        http://stackoverflow.com/questions/999489/invalid-signature-file-when-attempting-to-run-a-jar
                                    -->
                                    <artifact>*:*</artifact>
                                    <excludes>
                                        <exclude>META-INF/*.SF</exclude>
                                        <exclude>META-INF/*.DSA</exclude>
                                        <exclude>META-INF/*.RSA</exclude>
                                    </excludes>
                                </filter>
                            </filters>
                        </configuration>
                    </execution>
                </executions>
            </plugin>
        </plugins>
        <pluginManagement>
            <plugins>
                <plugin>
                    <artifactId>maven-clean-plugin</artifactId>
                    <version>2.5</version>
                </plugin>
                <plugin>
                    <artifactId>maven-deploy-plugin</artifactId>
                    <version>2.8.1</version>
                </plugin>
                <plugin>
                    <artifactId>maven-install-plugin</artifactId>
                    <version>2.5.1</version>
                </plugin>
                <plugin>
                    <artifactId>maven-jar-plugin</artifactId>
                    <version>2.4</version>
                </plugin>
                <plugin>
                    <artifactId>maven-javadoc-plugin</artifactId>
                    <version>2.9.1</version>
                </plugin>
                <plugin>
                    <artifactId>maven-resources-plugin</artifactId>
                    <version>2.6</version>
                </plugin>
                <plugin>
                    <artifactId>maven-site-plugin</artifactId>
                    <version>3.3</version>
                </plugin>
                <plugin>
                    <artifactId>maven-source-plugin</artifactId>
                    <version>2.2.1</version>
                </plugin>
                <plugin>
                    <artifactId>maven-surefire-plugin</artifactId>
                    <version>2.17</version>
                </plugin>
            </plugins>
        </pluginManagement>
    </build>

</project>

run.bat

@ECHO OFF

REM compile the benchmark project
CALL mvn validate
CALL mvn clean install

REM run the benchmark
CALL java -jar target/benchmarks.jar

@ECHO ON

run.sh

#!/bin/bash

# compile the benchmark project
mvn validate
mvn clean install

# run the benchmark
/usr/lib/jvm/java-8-openjdk-amd64/jre/bin/java -jar target/benchmarks.jar
# java -jar target/benchmarks.jar

Throughput.java

package benchmark;

import java.security.NoSuchAlgorithmException;
import java.security.SecureRandom;
import java.util.Random;
import java.util.UUID;
import java.util.concurrent.ThreadLocalRandom;
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.Measurement;
import org.openjdk.jmh.annotations.Mode;
import org.openjdk.jmh.annotations.OutputTimeUnit;
import org.openjdk.jmh.annotations.Scope;
import org.openjdk.jmh.annotations.State;
import org.openjdk.jmh.annotations.Threads;
import org.openjdk.jmh.annotations.Warmup;

import com.github.f4b6a3.uuid.UuidCreator;
import com.github.f4b6a3.uuid.factory.rfc4122.RandomBasedFactory;

@Fork(1)
@Threads(4)
@State(Scope.Benchmark)
@Warmup(iterations = 3)
@Measurement(iterations = 5)
@BenchmarkMode(Mode.Throughput)
@OutputTimeUnit(TimeUnit.MILLISECONDS)
public class Throughput {

	@Benchmark
	public UUID UUID_randomUUID() {
		return UUID.randomUUID();
	}
	
	@Benchmark
	public UUID UuidCreator_getRandomBased() {
		return UuidCreator.getRandomBased();
	}
	
	@Benchmark
	public UUID UuidGenerator1_generate() {
		return UuidGenerator1.generate();
	}
	
	@Benchmark
	public UUID UuidGenerator2_generate() {
		return UuidGenerator2.generate();
	}

	public static class UuidGenerator1 {

	    private static final RandomBasedFactory UUID_FACTORY;

	    static {
	        UUID_FACTORY = new RandomBasedFactory((int length) -> {
	            final byte[] bytes = new byte[length];
	            ThreadLocalRandom.current().nextBytes(bytes);
	            return bytes;
	        });
	    }

	    public static UUID generate() {
	        return UUID_FACTORY.create();
	    }
	}
	
	public static class UuidGenerator2 {

	    private static final ThreadLocal<RandomBasedFactory> UUID_FACTORY;

	    static {
	        UUID_FACTORY = ThreadLocal.withInitial(() -> {
	            Random random;
	            try {
	                // SHA1PRNG algorithm is default on Windows
	                random = SecureRandom.getInstance("SHA1PRNG");
	            } catch (NoSuchAlgorithmException e) {
	                // default runtime algorithm
	                random = new SecureRandom();
	            }
	            return new RandomBasedFactory(random);
	        });
	    }

	    public static UUID generate() {
	        return UUID_FACTORY.get().create();
	    }
	}
}