1 <!doctype html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> 2 <html> 3 <head> 4 <meta http-equiv="content-type" content="text/html; charset=iso-8859-1"> 5 <meta http-equiv="content-style-type" content="text/css"> 6 <link rel="stylesheet" type="text/css" href="style.css"> 7 <title>ProGuard Results</title> 8 <script type="text/javascript" language="JavaScript"> 9 <!-- 10 if (window.self==window.top) 11 window.top.location.replace("index.html#"+window.location.pathname+window.location.hash); 12 else { 13 var hash="#"+window.location.pathname.replace(window.top.location.pathname.replace("index.html", ""), ""); 14 if (window.top.location.hash!=hash) 15 window.top.location.hash=hash; 16 } 17 //--> 18 </script> 19 <title>ProGuard Results</title> 20 </head> 21 <body> 22 23 <h2>Results</h2> 24 25 <b>ProGuard</b> successfully processes any Java bytecode, ranging from small 26 midlets to entire run-time libraries. It primarily reduces the size of the 27 processed code, with some potential increase in efficiency as an added bonus. 28 The improvements obviously depend on the original code. The table below 29 presents some typical results: 30 <p> 31 32 <table> 33 34 <tr> 35 <th width="28%">Input Program</th> 36 <th width="12%">Original size</th> 37 <th width="12%">After shrinking</th> 38 <th width="12%">After optim.</th> 39 <th width="12%">After obfusc.</th> 40 <th width="12%">Total reduction</th> 41 <th width="12%">Time</th> 42 <th width="12%">Memory usage</th> 43 </tr> 44 45 <tr> 46 <td><a target="other" href="http://www.oracle.com/technetwork/java/javame/">Worm</a>, a sample midlet from Oracle's JME</td> 47 <td align="center">10.3 K</td> 48 <td align="center">9.8 K</td> 49 <td align="center">9.6 K</td> 50 <td align="center">8.5 K</td> 51 <td align="center">18 %</td> 52 <td align="center">2 s</td> 53 <td align="center">19 M</td> 54 </tr> 55 56 <tr> 57 <td><a target="other" href="http://www.javadocking.com/">Javadocking</a>, a docking library</td> 58 <td align="center">290 K</td> 59 <td align="center">281 K</td> 60 <td align="center">270 K</td> 61 <td align="center">201 K</td> 62 <td align="center">30 %</td> 63 <td align="center">12 s</td> 64 <td align="center">32 M</td> 65 </tr> 66 67 <tr> 68 <td><b>ProGuard</b> itself</td> 69 <td align="center">648 K</td> 70 <td align="center">579 K</td> 71 <td align="center">557 K</td> 72 <td align="center">348 K</td> 73 <td align="center">46 %</td> 74 <td align="center">28 s</td> 75 <td align="center">66 M</td> 76 </tr> 77 78 <tr> 79 <td><a target="other" href="http://www.clarkware.com/software/JDepend.html">JDepend</a>, a Java quality metrics tool</td> 80 <td align="center">57 K</td> 81 <td align="center">36 K</td> 82 <td align="center">33 K</td> 83 <td align="center">28 K</td> 84 <td align="center">51 %</td> 85 <td align="center">6 s</td> 86 <td align="center">24 M</td> 87 </tr> 88 89 <tr> 90 <td><a target="other" href="http://java.sun.com/javase/6/">the run-time classes</a> from Oracle's Java 6</td> 91 <td align="center">53 M</td> 92 <td align="center">23 M</td> 93 <td align="center">22 M</td> 94 <td align="center">18 M</td> 95 <td align="center">66 %</td> 96 <td align="center">16 min</td> 97 <td align="center">270 M</td> 98 </tr> 99 100 <tr> 101 <td><a target="other" href="http://tomcat.apache.org/">Tomcat</a>, the Apache servlet container</td> 102 <td align="center">1.1 M</td> 103 <td align="center">466 K</td> 104 <td align="center">426 K</td> 105 <td align="center">295 K</td> 106 <td align="center">74 %</td> 107 <td align="center">17 s</td> 108 <td align="center">44 M</td> 109 </tr> 110 111 <tr> 112 <td><a target="other" href="http://javancss.codehaus.org/">JavaNCSS</a>, a Java source metrics tool</td> 113 <td align="center">632 K</td> 114 <td align="center">242 K</td> 115 <td align="center">212 K</td> 116 <td align="center">152 K</td> 117 <td align="center">75 %</td> 118 <td align="center">20 s</td> 119 <td align="center">36 M</td> 120 </tr> 121 122 <tr> 123 <td><a target="other" href="http://ant.apache.org/">Ant</a>, the Apache build tool</td> 124 <td align="center">2.4 M</td> 125 <td align="center">401 K</td> 126 <td align="center">325 K</td> 127 <td align="center">242 K</td> 128 <td align="center">90 %</td> 129 <td align="center">23 s</td> 130 <td align="center">61 M</td> 131 </tr> 132 133 </table> 134 <p> 135 Results were measured with ProGuard 4.0 on a 2.6 GHz Pentium 4 with 512 MB 136 of memory, using Sun JDK 1.5.0 in Fedora Core 3 Linux. All of this technology 137 and software has evolved since, but the gist of the results remains the same. 138 <p> 139 The program sizes include companion libraries. The shrinking step produces the 140 best results for programs that use only small parts of their libraries. The 141 obfuscation step can significantly shrink large programs even further, since 142 the identifiers of their many internal references can be replaced by short 143 identifiers. 144 <p> 145 The Java 6 run-time classes are the most complex example. The classes perform 146 a lot of introspection, interacting with the native code of the virtual 147 machine. The 1500+ lines of configuration were largely composed by automated 148 analysis, complemented by a great deal of trial and error. The configuration 149 is probably not complete, but the resulting library successfully serves as a 150 run-time environment for running applications like ProGuard and the ProGuard 151 GUI. 152 <p> 153 For small inputs, timings are governed by the reading and parsing of the jars. 154 For large inputs, the optimization step becomes more important. For instance, 155 processing the Java 6 run-time classes without optimization only takes 2 156 minutes. 157 <p> 158 Memory usage (the amount of physical memory used by ProGuard while processing) 159 is governed by the basic java virtual machine and by the total size of the 160 library jars and program jars. 161 162 <hr /> 163 <noscript><div><a target="_top" href="index.html" class="button">Show menu</a></div></noscript> 164 <address> 165 Copyright © 2002-2011 166 <a target="other" href="http://www.lafortune.eu/">Eric Lafortune</a>. 167 </address> 168 169 </body> 170 </html> 171
