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3<title>V8 Benchmark Suite Revisions</title>
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8 <div class="title"><h1>V8 Benchmark Suite Revisions</h1></div>
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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.
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Kristian Monsen25f61362010-05-21 11:50:48 +010023<div class="subtitle"><h3>Version 6 (<a href="http://v8.googlecode.com/svn/data/benchmarks/v6/run.html">link</a>)</h3></div>
24
25<p>Removed dead code from the RayTrace benchmark and changed the Splay
26benchmark to avoid converting the same numeric key to a string over
27and over again.
28</p>
29
Steve Blocka7e24c12009-10-30 11:49:00 +000030<div class="subtitle"><h3>Version 5 (<a href="http://v8.googlecode.com/svn/data/benchmarks/v5/run.html">link</a>)</h3></div>
31
32<p>Removed duplicate line in random seed code, and changed the name of
33the Object.prototype.inherits function in the DeltaBlue benchmark to
34inheritsFrom to avoid name clashes when running in Chromium with
35extensions enabled.
36</p>
37
38<div class="subtitle"><h3>Version 4 (<a href="http://v8.googlecode.com/svn/data/benchmarks/v4/run.html">link</a>)</h3></div>
39
40<p>The <i>Splay</i> benchmark is a newcomer in version 4. It
41manipulates a splay tree by adding and removing data nodes, thus
42exercising the memory management subsystem of the JavaScript engine.
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45<p>
46Furthermore, all the unused parts of the Prototype library were
47removed from the RayTrace benchmark. This does not affect the running
48of the benchmark.
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51
52<div class="subtitle"><h3>Version 3 (<a href="http://v8.googlecode.com/svn/data/benchmarks/v3/run.html">link</a>)</h3></div>
53
54<p>Version 3 adds a new benchmark, <i>RegExp</i>. The RegExp
55benchmark is generated by loading 50 of the most popular pages on the
56web and logging all regexp operations performed. Each operation is
57given a weight that is calculated from an estimate of the popularity
58of the pages where it occurs and the number of times it is executed
59while loading each page. Finally the literal letters in the data are
60encoded using ROT13 in a way that does not affect how the regexps
61match their input.
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64
65<div class="subtitle"><h3>Version 2 (<a href="http://v8.googlecode.com/svn/data/benchmarks/v2/run.html">link</a>)</h3></div>
66
67<p>For version 2 the Crypto benchmark was fixed. Previously, the
68decryption stage was given plaintext as input, which resulted in an
69error. Now, the decryption stage is given the output of the
70encryption stage as input. The result is checked against the original
71plaintext. For this to give the correct results the crypto objects
72are reset for each iteration of the benchmark. In addition, the size
73of the plain text has been increased a little and the use of
74Math.random() and new Date() to build an RNG pool has been
75removed. </p>
76
77<p>Other benchmarks were fixed to do elementary verification of the
78results of their calculations. This is to avoid accidentally
79obtaining scores that are the result of an incorrect JavaScript engine
80optimization.</p>
81
82
83<div class="subtitle"><h3>Version 1 (<a href="http://v8.googlecode.com/svn/data/benchmarks/v1/run.html">link</a>)</h3></div>
84
85<p>Initial release.</p>
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