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8301092: Add benchmark for CRC32

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Reviewed-by: ecaspole, sviswanathan
This commit is contained in:
Scott Gibbons 2023-01-26 00:20:41 +00:00 committed by Sandhya Viswanathan
parent adcfd25735
commit 7e951f4b4c
1 changed files with 61 additions and 0 deletions
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test/micro/org/openjdk/bench/java/util/TestCRC32.java Normal file
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/*
* Copyright (c) 2021, 2023, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package org.openjdk.bench.java.util;
import java.util.Random;
import java.util.concurrent.TimeUnit;
import java.util.zip.CRC32;
import org.openjdk.jmh.annotations.*;
@BenchmarkMode(Mode.Throughput)
@OutputTimeUnit(TimeUnit.MILLISECONDS)
@State(Scope.Benchmark)
@Warmup(iterations = 4, time = 2)
@Measurement(iterations = 4, time = 2)
@Fork(value = 3)
public class TestCRC32 {
private CRC32 crc32;
private Random random;
private byte[] bytes;
@Param({"64", "128", "256", "512", /* "1024", */ "2048", /* "4096", "8192", */ "16384", /* "32768", */ "65536"})
private int count;
public TestCRC32() {
crc32 = new CRC32();
random = new Random(2147483648L);
bytes = new byte[1000000];
random.nextBytes(bytes);
}
@Setup(Level.Iteration)
public void setupBytes() {
crc32.reset();
}
@Benchmark
public void testCRC32Update() {
crc32.update(bytes, 0, count);
}
}