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The following commit(s) were added to refs/heads/master by this push:
new a8cb750e5 Add
org.apache.commons.compress.archivers.zip.ZipFileNameMapBenmark
a8cb750e5 is described below
commit a8cb750e5bdd0fe136d5d9cab38781f9447b2dd3
Author: Gary Gregory <[email protected]>
AuthorDate: Sat Jul 11 10:39:41 2026 -0400
Add org.apache.commons.compress.archivers.zip.ZipFileNameMapBenmark
See https://github.com/apache/commons-compress/pull/378
---
pom.xml | 12 +++
.../archivers/zip/ZipFileNameMapBenmark.java | 112 +++++++++++++++++++++
2 files changed, 124 insertions(+)
diff --git a/pom.xml b/pom.xml
index 25c6426cd..11d46a1c3 100644
--- a/pom.xml
+++ b/pom.xml
@@ -217,6 +217,18 @@ Brotli, Zstandard and ar, cpio, jar, tar, zip, dump, 7z,
arj.
<artifactId>junit-pioneer</artifactId>
<scope>test</scope>
</dependency>
+ <dependency>
+ <groupId>org.openjdk.jmh</groupId>
+ <artifactId>jmh-core</artifactId>
+ <version>${commons.jmh.version}</version>
+ <scope>test</scope>
+ </dependency>
+ <dependency>
+ <groupId>org.openjdk.jmh</groupId>
+ <artifactId>jmh-generator-annprocess</artifactId>
+ <version>${commons.jmh.version}</version>
+ <scope>test</scope>
+ </dependency>
</dependencies>
<scm>
<connection>scm:git:https://gitbox.apache.org/repos/asf/commons-compress.git</connection>
diff --git
a/src/test/java/org/apache/commons/compress/archivers/zip/ZipFileNameMapBenmark.java
b/src/test/java/org/apache/commons/compress/archivers/zip/ZipFileNameMapBenmark.java
new file mode 100644
index 000000000..13e00b2a2
--- /dev/null
+++
b/src/test/java/org/apache/commons/compress/archivers/zip/ZipFileNameMapBenmark.java
@@ -0,0 +1,112 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+package org.apache.commons.compress.archivers.zip;
+
+import java.io.BufferedOutputStream;
+import java.io.FileNotFoundException;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.UncheckedIOException;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+import java.util.Collections;
+import java.util.zip.ZipEntry;
+import java.util.zip.ZipOutputStream;
+
+import org.openjdk.jmh.annotations.Benchmark;
+import org.openjdk.jmh.infra.Blackhole;
+
+/**
+ * Benchmark for https://github.com/apache/commons-compress/pull/378
+ */
+public class ZipFileNameMapBenmark {
+
+ private static final Path ARCHIVE_PATH =
Paths.get("target/large_archive.zip");
+
+ private static final ZipFile globalFile;
+
+ private static final String[] entryNames;
+ static {
+ try {
+ globalFile = ZipFile.builder().setPath(create60MbZipFile()).get();
+ } catch (final IOException e) {
+ throw new UncheckedIOException(e);
+ }
+ entryNames =
Collections.list(globalFile.getEntries()).stream().map(ZipArchiveEntry::getName).toArray(String[]::new);
+ }
+
+ private static Path create60MbZipFile() throws FileNotFoundException,
IOException {
+ // 60 MB in bytes (60 * 1024 * 1024)
+ final long targetSize = 62914560L;
+ // 8 KB buffer for fast writing
+ final int bufferSize = 8192;
+ final String zipFileName = "target/large_archive.zip";
+ final String entryName = "target/large_file.dat";
+ try (FileOutputStream fos = new
FileOutputStream(ARCHIVE_PATH.toFile());
+ BufferedOutputStream bos = new BufferedOutputStream(fos);
+ ZipOutputStream zos = new ZipOutputStream(bos)) {
+ // Tell the zip file what the file inside will be called
+ zos.putNextEntry(new ZipEntry(entryName));
+ final byte[] buffer = new byte[bufferSize];
+ long bytesWritten = 0;
+ // Loop to generate and write data until we hit 60 MB
+ while (bytesWritten < targetSize) {
+ // Calculate how many bytes to write in this specific step
+ final long bytesLeft = targetSize - bytesWritten;
+ final int lengthToWrite = (int) Math.min(bufferSize,
bytesLeft);
+ // Write fake data (zeros) to the zip output stream
+ zos.write(buffer, 0, lengthToWrite);
+ bytesWritten += lengthToWrite;
+ }
+ // Close the current file inside the zip
+ zos.closeEntry();
+ }
+ System.out.printf("Created a zip file of size: %,d bytes at %s%n",
targetSize, zipFileName);
+ return Paths.get(zipFileName);
+ }
+
+ @Benchmark
+ public void testGetEntries(final Blackhole blackhole) throws IOException {
+ for (final String entryName : entryNames) {
+ blackhole.consume(globalFile.getEntries(entryName));
+ }
+ }
+
+ @Benchmark
+ public void testGetEntriesInPhysicalOrder(final Blackhole blackhole)
throws IOException {
+ for (final String entryName : entryNames) {
+ blackhole.consume(globalFile.getEntriesInPhysicalOrder(entryName));
+ }
+ }
+
+ @Benchmark
+ public void testGetEntry(final Blackhole blackhole) throws IOException {
+ for (final String entryName : entryNames) {
+ blackhole.consume(globalFile.getEntry(entryName));
+ }
+ }
+
+ @Benchmark
+ public void testOpen() throws IOException {
+ try (ZipFile file = ZipFile.builder().setPath(ARCHIVE_PATH).get()) {
+ // do nothing, just open and close the file to measure the time
taken for this operation.
+ }
+ }
+}
