1<html> 2<head> 3<title>V8 Benchmark Suite Revisions</title> 4<link type="text/css" rel="stylesheet" href="style.css" /> 5</head> 6<body> 7<div> 8 <div class="title"><h1>V8 Benchmark Suite Revisions</h1></div> 9 <table> 10 <tr> 11 <td class="contents"> 12 13<p> 14 15The V8 benchmark suite is changed from time to time as we fix bugs or 16expand the scope of the benchmarks. Here is a list of revisions, with 17a description of the changes made. Note that benchmark results are 18not comparable unless both results are run with the same revision of 19the benchmark suite. 20 21</p> 22 23<div class="subtitle"><h3>Version 5 (<a href="http://v8.googlecode.com/svn/data/benchmarks/v5/run.html">link</a>)</h3></div> 24 25<p>Removed duplicate line in random seed code, and changed the name of 26the Object.prototype.inherits function in the DeltaBlue benchmark to 27inheritsFrom to avoid name clashes when running in Chromium with 28extensions enabled. 29</p> 30 31<div class="subtitle"><h3>Version 4 (<a href="http://v8.googlecode.com/svn/data/benchmarks/v4/run.html">link</a>)</h3></div> 32 33<p>The <i>Splay</i> benchmark is a newcomer in version 4. It 34manipulates a splay tree by adding and removing data nodes, thus 35exercising the memory management subsystem of the JavaScript engine. 36</p> 37 38<p> 39Furthermore, all the unused parts of the Prototype library were 40removed from the RayTrace benchmark. This does not affect the running 41of the benchmark. 42</p> 43 44 45<div class="subtitle"><h3>Version 3 (<a href="http://v8.googlecode.com/svn/data/benchmarks/v3/run.html">link</a>)</h3></div> 46 47<p>Version 3 adds a new benchmark, <i>RegExp</i>. The RegExp 48benchmark is generated by loading 50 of the most popular pages on the 49web and logging all regexp operations performed. Each operation is 50given a weight that is calculated from an estimate of the popularity 51of the pages where it occurs and the number of times it is executed 52while loading each page. Finally the literal letters in the data are 53encoded using ROT13 in a way that does not affect how the regexps 54match their input. 55</p> 56 57 58<div class="subtitle"><h3>Version 2 (<a href="http://v8.googlecode.com/svn/data/benchmarks/v2/run.html">link</a>)</h3></div> 59 60<p>For version 2 the Crypto benchmark was fixed. Previously, the 61decryption stage was given plaintext as input, which resulted in an 62error. Now, the decryption stage is given the output of the 63encryption stage as input. The result is checked against the original 64plaintext. For this to give the correct results the crypto objects 65are reset for each iteration of the benchmark. In addition, the size 66of the plain text has been increased a little and the use of 67Math.random() and new Date() to build an RNG pool has been 68removed. </p> 69 70<p>Other benchmarks were fixed to do elementary verification of the 71results of their calculations. This is to avoid accidentally 72obtaining scores that are the result of an incorrect JavaScript engine 73optimization.</p> 74 75 76<div class="subtitle"><h3>Version 1 (<a href="http://v8.googlecode.com/svn/data/benchmarks/v1/run.html">link</a>)</h3></div> 77 78<p>Initial release.</p> 79 80</td><td style="text-align: center"> 81</td></tr></table> 82 83</div> 84 85</body> 86</html> 87