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JMH (#2222)

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* JMH

* JMH
This commit is contained in:
Danil Kornishev 2017-07-15 17:53:57 -04:00 committed by Zeger Hendrikse
parent fdcb6a8cf9
commit b4d3e23c3e
5 changed files with 104 additions and 103 deletions
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10
jmh/pom.xml
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@ -12,6 +12,8 @@
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<java.version>1.8</java.version>
<maven.compiler.source>1.6</maven.compiler.source>
<maven.compiler.target>1.6</maven.compiler.target>
</properties>
<dependencies>
@ -31,6 +33,12 @@
<version>3.8.1</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>com.google.guava</groupId>
<artifactId>guava</artifactId>
<version>21.0</version>
</dependency>
</dependencies>
<build>
@ -41,7 +49,7 @@
<configuration>
<archive>
<manifest>
<mainClass>com.baeldung.Application</mainClass>
<mainClass>com.baeldung.BenchmarkRunner</mainClass>
</manifest>
</archive>
</configuration>

14
jmh/src/main/java/com/baeldung/Application.java
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@ -1,14 +0,0 @@
package com.baeldung;
import java.io.IOException;
import org.openjdk.jmh.Main;
import org.openjdk.jmh.runner.RunnerException;
public class Application {
public static void main(String[] args) throws RunnerException, IOException {
Main.main(args);
}
}

42
jmh/src/main/java/com/baeldung/BenchMark.java
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@ -1,12 +1,48 @@
package com.baeldung;
import org.openjdk.jmh.annotations.Benchmark;
import com.google.common.hash.HashFunction;
import com.google.common.hash.Hasher;
import com.google.common.hash.Hashing;
import org.openjdk.jmh.annotations.*;
import java.nio.charset.Charset;
public class BenchMark {
@Benchmark
public void init() {
@State(Scope.Benchmark)
public static class ExecutionPlan {
@Param({ "100", "200", "300", "500", "1000" })
public int iterations;
public Hasher murmur3;
public String password = "4v3rys3kur3p455w0rd";
@Setup(Level.Invocation)
public void setUp() {
murmur3 = Hashing.murmur3_128().newHasher();
}
}
@Fork(value = 1, warmups = 1)
@Benchmark
@BenchmarkMode(Mode.Throughput)
@Warmup(iterations = 5)
public void benchMurmur3_128(ExecutionPlan plan) {
for (int i = plan.iterations; i > 0; i--) {
plan.murmur3.putString(plan.password, Charset.defaultCharset());
}
plan.murmur3.hash();
}
@Benchmark
@Fork(value = 1, warmups = 1)
@BenchmarkMode(Mode.Throughput)
public void init() {
// Do nothing
}
}

9
jmh/src/main/java/com/baeldung/BenchmarkRunner.java Normal file
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@ -0,0 +1,9 @@
package com.baeldung;
public class BenchmarkRunner {
public static void main(String[] args) throws Exception {
org.openjdk.jmh.Main.main(args);
}
}

38
jmh/src/test/java/com/baeldung/AppTest.java
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@ -1,38 +0,0 @@
package com.baeldung;
import junit.framework.Test;
import junit.framework.TestCase;
import junit.framework.TestSuite;
/**
* Unit test for simple App.
*/
public class AppTest
extends TestCase
{
/**
* Create the test case
*
* @param testName name of the test case
*/
public AppTest( String testName )
{
super( testName );
}
/**
* @return the suite of tests being tested
*/
public static Test suite()
{
return new TestSuite( AppTest.class );
}
/**
* Rigourous Test :-)
*/
public void testApp()
{
assertTrue( true );
}
}