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1 | <html> |
| 2 | <head> | |
| 3 | <meta http-equiv="Content-Type" content="text/html; charset=US-ASCII"> | |
| 4 | <title>Performance</title> | |
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| 6 | <meta name="generator" content="DocBook XSL Stylesheets V1.75.2"> | |
| 7 | <link rel="home" href="../index.html" title="Chapter 1. Context"> | |
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| 13 | <table cellpadding="2" width="100%"><tr> | |
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| 24 | </div> | |
| 25 | <div class="section"> | |
| 26 | <div class="titlepage"><div><div><h2 class="title" style="clear: both"> | |
| 27 | <a name="context.performance"></a><a class="link" href="performance.html" title="Performance">Performance</a> | |
| 28 | </h2></div></div></div> | |
| 29 | <p> | |
| 30 | Performance of <span class="bold"><strong>Boost.Context</strong></span> was measured | |
| 31 | on the platforms shown in the following table. Performance measurements were | |
| 32 | taken using <code class="computeroutput"><span class="identifier">rdtsc</span></code> and <code class="computeroutput"><span class="identifier">boost</span><span class="special">::</span><span class="identifier">chrono</span><span class="special">::</span><span class="identifier">high_resolution_clock</span></code>, | |
| 33 | with overhead corrections, on x86 platforms. In each case, cache warm-up was | |
| 34 | accounted for, and the one running thread was pinned to a single CPU. The code | |
| 35 | was compiled using the build options, 'variant = release cxxflags = -DBOOST_DISABLE_ASSERTS'. | |
| 36 | </p> | |
| 37 | <div class="table"> | |
| 38 | <a name="context.performance.performance_of_context_switch"></a><p class="title"><b>Table 1.1. Performance of context switch</b></p> | |
| 39 | <div class="table-contents"><table class="table" summary="Performance of context switch"> | |
| 40 | <colgroup> | |
| 41 | <col> | |
| 42 | <col> | |
| 43 | <col> | |
| 44 | <col> | |
| 45 | </colgroup> | |
| 46 | <thead><tr> | |
| 47 | <th> | |
| 48 | <p> | |
| 49 | Platform | |
| 50 | </p> | |
| 51 | </th> | |
| 52 | <th> | |
| 53 | <p> | |
| 54 | ucontext_t | |
| 55 | </p> | |
| 56 | </th> | |
| 57 | <th> | |
| 58 | <p> | |
| 59 | execution_context (v1) | |
| 60 | </p> | |
| 61 | </th> | |
| 62 | <th> | |
| 63 | <p> | |
| 64 | execution_context (v2) | |
| 65 | </p> | |
| 66 | </th> | |
| 67 | </tr></thead> | |
| 68 | <tbody><tr> | |
| 69 | <td> | |
| 70 | <p> | |
| 71 | x86_64 <sup>[<a name="context.performance.f0" href="#ftn.context.performance.f0" class="footnote">a</a>]</sup> | |
| 72 | </p> | |
| 73 | </td> | |
| 74 | <td> | |
| 75 | <p> | |
| 76 | 547 ns / 1433 cycles | |
| 77 | </p> | |
| 78 | </td> | |
| 79 | <td> | |
| 80 | <p> | |
| 81 | 51 ns / 141 cycles | |
| 82 | </p> | |
| 83 | </td> | |
| 84 | <td> | |
| 85 | <p> | |
| 86 | 7 ns / 18 cycles | |
| 87 | </p> | |
| 88 | </td> | |
| 89 | </tr></tbody> | |
| 90 | <tbody class="footnotes"><tr><td colspan="4"><div class="footnote"><p><sup>[<a name="ftn.context.performance.f0" href="#context.performance.f0" class="para">a</a>] </sup> | |
| 91 | Intel Core2 Q6700 | |
| 92 | </p></div></td></tr></tbody> | |
| 93 | </table></div> | |
| 94 | </div> | |
| 95 | <br class="table-break"> | |
| 96 | </div> | |
| 97 | <table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr> | |
| 98 | <td align="left"></td> | |
| 99 | <td align="right"><div class="copyright-footer">Copyright © 2014 Oliver Kowalke<p> | |
| 100 | Distributed under the Boost Software License, Version 1.0. (See accompanying | |
| 101 | file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>) | |
| 102 | </p> | |
| 103 | </div></td> | |
| 104 | </tr></table> | |
| 105 | <hr> | |
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| 108 | </div> | |
| 109 | </body> | |
| 110 | </html> |