001/**************************************************************** 002 * Licensed to the Apache Software Foundation (ASF) under one * 003 * or more contributor license agreements. See the NOTICE file * 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 * * 012 * Unless required by applicable law or agreed to in writing, * 013 * software distributed under the License is distributed on an * 014 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY * 015 * KIND, either express or implied. See the License for the * 016 * specific language governing permissions and limitations * 017 * under the License. * 018 ****************************************************************/ 019 020package org.apache.james.mime4j; 021 022import java.io.OutputStream; 023import java.util.Random; 024 025import org.apache.commons.io.output.NullOutputStream; 026import org.apache.james.mime4j.codec.Base64OutputStream; 027 028public 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}