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<meta http-equiv="Content-Type" content="text/html; charset=US-ASCII">
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<title>Performance</title>
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<div class="titlepage"><div><div><h2 class="title" style="clear: both">
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<a name="coroutine.performance"></a><a class="link" href="performance.html" title="Performance">Performance</a>
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</h2></div></div></div>
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<p>
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Performance of <span class="bold"><strong>Boost.Coroutine</strong></span> was measured
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on the platforms shown in the following table. Performance measurements were
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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>,
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with overhead corrections, on x86 platforms. In each case, cache warm-up was
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accounted for, and the one running thread was pinned to a single CPU. The code
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was compiled using the build options, 'variant = release cxxflags = -DBOOST_DISABLE_ASSERTS'.
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</p>
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<div class="table">
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<a name="coroutine.performance.perfomance_of_coroutine"></a><p class="title"><b>Table 1.1. Perfomance of coroutine</b></p>
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<div class="table-contents"><table class="table" summary="Perfomance of coroutine">
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<colgroup>
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<col>
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<col>
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<col>
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<col>
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<col>
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</colgroup>
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<thead><tr>
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<th>
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<p>
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Platform
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</p>
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</th>
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<th>
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<p>
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switch
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</p>
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</th>
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<th>
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<p>
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construction (protected stack-allocator)
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</p>
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</th>
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<th>
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<p>
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construction (simple stack-allocator)
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</p>
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</th>
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<th>
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<p>
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construction (preallocated stack-allocator)
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</p>
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</th>
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</tr></thead>
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<tbody>
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<tr>
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<td>
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<p>
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i386 <sup>[<a name="coroutine.performance.f0" href="#ftn.coroutine.performance.f0" class="footnote">a</a>]</sup>
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</p>
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</td>
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<td>
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<p>
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78 ns / 77 cycles
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</p>
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</td>
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<td>
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<p>
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188868 ns / 245093 cycles
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</p>
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</td>
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<td>
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<p>
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31860 ns / 31812 cycles
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</p>
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</td>
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<td>
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<p>
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13127 ns / 19764 cycles
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</p>
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</td>
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</tr>
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<tr>
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<td>
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<p>
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x86_64 <sup>[<a name="coroutine.performance.f1" href="#ftn.coroutine.performance.f1" class="footnote">b</a>]</sup>
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</p>
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</td>
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<td>
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<p>
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28 ns / 74 cycles
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</p>
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</td>
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<td>
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<p>
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46916 ns / 109569 cycles
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</p>
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</td>
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<td>
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<p>
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14368 ns / 22705 cycles
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</p>
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</td>
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<td>
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<p>
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6114 ns / 16728 cycles
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</p>
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</td>
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</tr>
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</tbody>
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<tbody class="footnotes"><tr><td colspan="5">
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<div class="footnote"><p><sup>[<a name="ftn.coroutine.performance.f0" href="#coroutine.performance.f0" class="para">a</a>] </sup>
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AMD Athlon 64 DualCore 4400+
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</p></div>
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<div class="footnote"><p><sup>[<a name="ftn.coroutine.performance.f1" href="#coroutine.performance.f1" class="para">b</a>] </sup>
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Intel Core2 Q6700
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</p></div>
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</td></tr></tbody>
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</table></div>
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</div>
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<br class="table-break">
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</div>
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<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
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<td align="left"></td>
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<td align="right"><div class="copyright-footer">Copyright © 2009 Oliver Kowalke<p>
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Distributed under the Boost Software License, Version 1.0. (See accompanying
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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>)
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</p>
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