From 06de3a1dd773e2bfff26b247c728f69a6dc99e97 Mon Sep 17 00:00:00 2001 From: Matthias Sohn Date: Wed, 7 Aug 2019 11:51:30 +0200 Subject: [PATCH] Benchmark for creating files and FileSnapshots Change-Id: I953fd8b6b9743b0b9cada244331253eb2121784d Signed-off-by: Matthias Sohn --- .../CreateFileSnapshotBenchmark.java | 111 ++++++++++++++++++ 1 file changed, 111 insertions(+) create mode 100644 org.eclipse.jgit.benchmarks/src/org/eclipse/jgit/benchmarks/CreateFileSnapshotBenchmark.java diff --git a/org.eclipse.jgit.benchmarks/src/org/eclipse/jgit/benchmarks/CreateFileSnapshotBenchmark.java b/org.eclipse.jgit.benchmarks/src/org/eclipse/jgit/benchmarks/CreateFileSnapshotBenchmark.java new file mode 100644 index 000000000..ffe4a26d8 --- /dev/null +++ b/org.eclipse.jgit.benchmarks/src/org/eclipse/jgit/benchmarks/CreateFileSnapshotBenchmark.java @@ -0,0 +1,111 @@ +/* + * Copyright (C) 2019, Matthias Sohn + * and other copyright owners as documented in the project's IP log. + * + * This program and the accompanying materials are made available + * under the terms of the Eclipse Distribution License v1.0 which + * accompanies this distribution, is reproduced below, and is + * available at http://www.eclipse.org/org/documents/edl-v10.php + * + * 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 the Eclipse Foundation, Inc. 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 OWNER 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. + */ +package org.eclipse.jgit.benchmarks; + +import java.io.IOException; +import java.nio.file.Files; +import java.nio.file.Path; +import java.util.UUID; +import java.util.concurrent.TimeUnit; + +import org.eclipse.jgit.internal.storage.file.FileSnapshot; +import org.eclipse.jgit.util.FileUtils; +import org.openjdk.jmh.annotations.Benchmark; +import org.openjdk.jmh.annotations.BenchmarkMode; +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.TearDown; +import org.openjdk.jmh.annotations.Warmup; +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; + +@State(Scope.Thread) +public class CreateFileSnapshotBenchmark { + + Path path; + + Path testDir; + + @Setup + public void setupBenchmark() throws IOException { + testDir = Files.createTempDirectory("dir"); + path = testDir.resolve("toSnapshot"); + Files.createFile(path); + } + + @TearDown + public void teardown() throws IOException { + FileUtils.delete(testDir.toFile(), FileUtils.RECURSIVE | FileUtils.RETRY); + } + + @Benchmark + @BenchmarkMode({ Mode.AverageTime }) + @OutputTimeUnit(TimeUnit.NANOSECONDS) + @Warmup(iterations = 5, time = 100, timeUnit = TimeUnit.MILLISECONDS) + @Measurement(iterations = 5, time = 100, timeUnit = TimeUnit.MILLISECONDS) + public Path testCreateFile() throws IOException { + return Files.createTempFile(testDir, "create", ""); + } + + @Benchmark + @BenchmarkMode({ Mode.AverageTime }) + @OutputTimeUnit(TimeUnit.NANOSECONDS) + public FileSnapshot testCreateFileSnapshot() { + return FileSnapshot.save(path.toFile()); + } + + public static void main(String[] args) throws RunnerException { + Options opt = new OptionsBuilder() + .include(CreateFileSnapshotBenchmark.class.getSimpleName()) + // .addProfiler(StackProfiler.class) + // .addProfiler(GCProfiler.class) + .forks(1).jvmArgs("-ea").build(); + new Runner(opt).run(); + } +}