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ICU-23061 Performance test for Lowercase transliterator; introduce JMH

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JMH is the OpenJDK microbenchmark harness. It is a standardized tool with
many integrations and provides a lot of out-of-the-box functionality.

No existing perf-tests are changed

https://github.com/openjdk/jmh
This commit is contained in:
Steven Schlansker 2025-02-25 10:25:04 -08:00
parent 12fea708b7
commit 94ec9ffea8
3 changed files with 97 additions and 0 deletions
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3
icu4j/perf-tests/README.txt
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@ -43,6 +43,9 @@ COLLATION TESTS
The collation tests run only on the command line with tabular output:
perl collationperf.pl |& tee collation_output.txt
JMH
Some performance tests run using OpenJDK JMH. These may be launched with:
java -jar perf-tests/target/jmh-benchmarks.jar
OTHER COMMAND LINE TESTS
Additional tests are run from the command line, each producing an HTML

59
icu4j/perf-tests/pom.xml
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@ -15,6 +15,7 @@
<properties>
<module-name>perf_tests</module-name>
<jmh.version>1.37</jmh.version>
</properties>
<dependencies>
@ -43,6 +44,64 @@
<artifactId>commons-cli</artifactId>
<version>${commons-cli.version}</version>
</dependency>
<dependency>
<groupId>org.openjdk.jmh</groupId>
<artifactId>jmh-core</artifactId>
<version>${jmh.version}</version>
</dependency>
<dependency>
<groupId>org.openjdk.jmh</groupId>
<artifactId>jmh-generator-annprocess</artifactId>
<version>${jmh.version}</version>
<scope>provided</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<annotationProcessors>
<annotationProcessor>org.openjdk.jmh.generators.BenchmarkProcessor</annotationProcessor>
</annotationProcessors>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-shade-plugin</artifactId>
<executions>
<execution>
<phase>package</phase>
<goals>
<goal>shade</goal>
</goals>
<configuration>
<finalName>jmh-benchmarks</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>
</build>
</project>

35
icu4j/perf-tests/src/main/java/com/ibm/icu/dev/test/perf/LowercaseTransliteratorPerf.java Normal file
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@ -0,0 +1,35 @@
// © 2016 and later: Unicode, Inc. and others.
// License & terms of use: http://www.unicode.org/copyright.html
/*
**********************************************************************
* Copyright (c) 2002-2008, International Business Machines *
* Corporation and others. All Rights Reserved. *
**********************************************************************
*/
package com.ibm.icu.dev.test.perf;
import java.util.concurrent.TimeUnit;
import com.ibm.icu.text.Transliterator;
import org.openjdk.jmh.annotations.Benchmark;
import org.openjdk.jmh.annotations.BenchmarkMode;
import org.openjdk.jmh.annotations.Mode;
import org.openjdk.jmh.annotations.OutputTimeUnit;
@BenchmarkMode(Mode.Throughput)
@OutputTimeUnit(TimeUnit.MILLISECONDS)
public class LowercaseTransliteratorPerf {
static final Transliterator LOWER = Transliterator.getInstance("Lower");
@Benchmark
public String testShort() {
return LOWER.transliterate("Cat");
}
@Benchmark
public String testSentence() {
return LOWER.transliterate("The Quick Brown Fox Jumped Over The Lazy Dog");
}
}