1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
|
/*
* Copyright (C) 2020, Matthias Sohn <matthias.sohn@sap.com> and others
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Distribution License v. 1.0 which is available at
* https://www.eclipse.org/org/documents/edl-v10.php.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
package org.eclipse.jgit.benchmarks;
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.NoSuchFileException;
import java.nio.file.Path;
import java.nio.file.StandardCopyOption;
import java.util.concurrent.TimeUnit;
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 FileMoveBenchmark {
int i;
Path testDir;
Path targetDir;
@Setup
public void setupBenchmark() throws IOException {
testDir = Files.createTempDirectory("dir");
targetDir = testDir.resolve("target");
Files.createDirectory(targetDir);
}
@TearDown
public void teardown() throws IOException {
FileUtils.delete(testDir.toFile(),
FileUtils.RECURSIVE | FileUtils.RETRY);
}
@Benchmark
@BenchmarkMode({ Mode.AverageTime })
@OutputTimeUnit(TimeUnit.MICROSECONDS)
@Warmup(iterations = 5, time = 1000, timeUnit = TimeUnit.MILLISECONDS)
@Measurement(iterations = 5, time = 5000, timeUnit = TimeUnit.MILLISECONDS)
public Path moveFileToExistingDir() throws IOException {
i++;
Path tmp = testDir.resolve("tmp" + i++);
Files.createFile(tmp);
Path targetDirectory = targetDir;
Path targetFile = targetDirectory.resolve("tmp" + i);
try {
return Files.move(tmp, targetFile, StandardCopyOption.ATOMIC_MOVE);
} catch (NoSuchFileException e) {
Files.createDirectory(targetDirectory);
return Files.move(tmp, targetFile, StandardCopyOption.ATOMIC_MOVE);
}
}
@Benchmark
@BenchmarkMode({ Mode.AverageTime })
@OutputTimeUnit(TimeUnit.MICROSECONDS)
@Warmup(iterations = 5, time = 1000, timeUnit = TimeUnit.MILLISECONDS)
@Measurement(iterations = 5, time = 5000, timeUnit = TimeUnit.MILLISECONDS)
public Path moveFileToExistingDirExists() throws IOException {
Path tmp = testDir.resolve("tmp" + i++);
Files.createFile(tmp);
Path targetDirectory = targetDir;
Path targetFile = targetDir.resolve("tmp" + i);
if (!targetDirectory.toFile().exists()) {
Files.createDirectory(targetDirectory);
}
return Files.move(tmp, targetFile, StandardCopyOption.ATOMIC_MOVE);
}
@Benchmark
@BenchmarkMode({ Mode.AverageTime })
@OutputTimeUnit(TimeUnit.MICROSECONDS)
@Warmup(iterations = 5, time = 1000, timeUnit = TimeUnit.MILLISECONDS)
@Measurement(iterations = 5, time = 5000, timeUnit = TimeUnit.MILLISECONDS)
public Path moveFileToMissingDir() throws IOException {
i++;
Path tmp = testDir.resolve("tmp" + i);
Files.createFile(tmp);
Path targetDirectory = testDir.resolve("target" + i);
Path targetFile = targetDirectory.resolve("tmp" + i);
try {
return Files.move(tmp, targetFile, StandardCopyOption.ATOMIC_MOVE);
} catch (NoSuchFileException e) {
Files.createDirectory(targetDirectory);
return Files.move(tmp, targetFile, StandardCopyOption.ATOMIC_MOVE);
}
}
@Benchmark
@BenchmarkMode({ Mode.AverageTime })
@OutputTimeUnit(TimeUnit.MICROSECONDS)
@Warmup(iterations = 5, time = 1000, timeUnit = TimeUnit.MILLISECONDS)
@Measurement(iterations = 5, time = 5000, timeUnit = TimeUnit.MILLISECONDS)
public Path moveFileToMissingDirExists() throws IOException {
i++;
Path tmp = testDir.resolve("tmp" + i);
Files.createFile(tmp);
Path targetDirectory = testDir.resolve("target" + i);
Path targetFile = targetDirectory.resolve("tmp" + i);
if (!targetDirectory.toFile().exists()) {
Files.createDirectory(targetDirectory);
}
return Files.move(tmp, targetFile, StandardCopyOption.ATOMIC_MOVE);
}
public static void main(String[] args) throws RunnerException {
Options opt = new OptionsBuilder()
.include(FileMoveBenchmark.class
.getSimpleName())
// .addProfiler(StackProfiler.class)
// .addProfiler(GCProfiler.class)
.forks(1).jvmArgs("-ea").build();
new Runner(opt).run();
}
}
|
