001    /****************************************************************
002     * Licensed to the Apache Software Foundation (ASF) under one   *
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004     * distributed with this work for additional information        *
005     * regarding copyright ownership.  The ASF licenses this file   *
006     * to you under the Apache License, Version 2.0 (the            *
007     * "License"); you may not use this file except in compliance   *
008     * with the License.  You may obtain a copy of the License at   *
009     *                                                              *
010     *   http://www.apache.org/licenses/LICENSE-2.0                 *
011     *                                                              *
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017     * under the License.                                           *
018     ****************************************************************/
019    
020    package org.apache.james.mime4j;
021    
022    import java.io.OutputStream;
023    import java.util.Random;
024    
025    import org.apache.commons.io.output.NullOutputStream;
026    import org.apache.james.mime4j.codec.Base64OutputStream;
027    
028    public class Base64OutputStreamBench {
029    
030        public static void main(String[] args) throws Exception {
031            byte[] data = initData(1024);
032    
033            OutputStream nullOut = new NullOutputStream();
034            Base64OutputStream base64Out = new Base64OutputStream(nullOut);
035    
036            // warmup
037    
038            for (int i = 0; i < 2000; i++) {
039                base64Out.write(data);
040            }
041            Thread.sleep(100);
042    
043            // test
044    
045            long t0 = System.currentTimeMillis();
046    
047            final int repetitions = 500000;
048            for (int i = 0; i < repetitions; i++) {
049                base64Out.write(data);
050            }
051            base64Out.close();
052    
053            long dt = System.currentTimeMillis() - t0;
054            long totalBytes = data.length * (long) repetitions;
055    
056            double mbPerSec = (totalBytes / 1024.0 / 1024) / (dt / 1000.0);
057    
058            System.out.println(dt + " ms");
059            System.out.println(totalBytes + " bytes");
060            System.out.println(mbPerSec + " mb/sec");
061        }
062    
063        private static byte[] initData(int size) {
064            Random random = new Random(size);
065            byte[] data = new byte[size];
066            random.nextBytes(data);
067            return data;
068        }
069    
070    }