/*
* Licensed to Elastic Search and Shay Banon under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. Elastic Search 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
*
* http://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.elasticsearch.benchmark.checksum;
import org.elasticsearch.common.Digest;
import org.elasticsearch.common.unit.ByteSizeValue;
import org.elasticsearch.common.unit.TimeValue;
import java.security.MessageDigest;
import java.util.zip.Adler32;
import java.util.zip.CRC32;
/**
* @author kimchy (shay.banon)
*/
public class ChecksumBenchmarkTest {
public static final int BATCH_SIZE = 16 * 1024;
public static void main(String[] args) {
System.out.println("Warning up");
long warmSize = ByteSizeValue.parseBytesSizeValue("1g", null).bytes();
crc(warmSize);
adler(warmSize);
md5(warmSize);
long dataSize = ByteSizeValue.parseBytesSizeValue("10g", null).bytes();
System.out.println("Running size: " + dataSize);
crc(dataSize);
adler(dataSize);
md5(dataSize);
}
private static void crc(long dataSize) {
long start = System.currentTimeMillis();
CRC32 crc = new CRC32();
byte[] data = new byte[BATCH_SIZE];
long iter = dataSize / BATCH_SIZE;
for (long i = 0; i < iter; i++) {
crc.update(data);
}
crc.getValue();
System.out.println("CRC took " + new TimeValue(System.currentTimeMillis() - start));
}
private static void adler(long dataSize) {
long start = System.currentTimeMillis();
Adler32 crc = new Adler32();
byte[] data = new byte[BATCH_SIZE];
long iter = dataSize / BATCH_SIZE;
for (long i = 0; i < iter; i++) {
crc.update(data);
}
crc.getValue();
System.out.println("Adler took " + new TimeValue(System.currentTimeMillis() - start));
}
private static void md5(long dataSize) {
long start = System.currentTimeMillis();
byte[] data = new byte[BATCH_SIZE];
long iter = dataSize / BATCH_SIZE;
MessageDigest digest = Digest.getMd5Digest();
for (long i = 0; i < iter; i++) {
digest.update(data);
}
digest.digest();
System.out.println("md5 took " + new TimeValue(System.currentTimeMillis() - start));
}
}