Google Git
Sign in
nest-open-source / nest-cam / 4320010 / boost / 62d1066a6d52d5ac4e10c106f0eab14c820be0ce / . / boost / libs / coroutine / doc / html / coroutine / performance.html
blob: 8ef6d610df845411e573c167ea845cf2960039d1 [file] [log] [blame]
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=US-ASCII">
<title>Performance</title>
<link rel="stylesheet" href="../../../../../doc/src/boostbook.css" type="text/css">
<meta name="generator" content="DocBook XSL Stylesheets V1.78.1">
<link rel="home" href="../index.html" title="Chapter&#160;1.&#160;Coroutine">
<link rel="up" href="../index.html" title="Chapter&#160;1.&#160;Coroutine">
<link rel="prev" href="stack/valgrind.html" title="Support for valgrind">
<link rel="next" href="architectures.html" title="Architectures">
</head>
<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF">
<table cellpadding="2" width="100%"><tr>
<td valign="top"><img alt="Boost C++ Libraries" width="277" height="86" src="../../../../../boost.png"></td>
<td align="center"><a href="../../../../../index.html">Home</a></td>
<td align="center"><a href="../../../../../libs/libraries.htm">Libraries</a></td>
<td align="center"><a href="http://www.boost.org/users/people.html">People</a></td>
<td align="center"><a href="http://www.boost.org/users/faq.html">FAQ</a></td>
<td align="center"><a href="../../../../../more/index.htm">More</a></td>
</tr></table>
<hr>
<div class="spirit-nav">
<a accesskey="p" href="stack/valgrind.html"><img src="../../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../index.html"><img src="../../../../../doc/src/images/up.png" alt="Up"></a><a accesskey="h" href="../index.html"><img src="../../../../../doc/src/images/home.png" alt="Home"></a><a accesskey="n" href="architectures.html"><img src="../../../../../doc/src/images/next.png" alt="Next"></a>
</div>
<div class="section">
<div class="titlepage"><div><div><h2 class="title" style="clear: both">
<a name="coroutine.performance"></a><a class="link" href="performance.html" title="Performance">Performance</a>
</h2></div></div></div>
<p>
Performance of <span class="bold"><strong>Boost.Coroutine</strong></span> was measured
on the platforms shown in the following table. Performance measurements were
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>,
with overhead corrections, on x86 platforms. In each case, cache warm-up was
accounted for, and the one running thread was pinned to a single CPU.
</p>
<div class="table">
<a name="coroutine.performance.performance_of_asymmetric_coroutines"></a><p class="title"><b>Table&#160;1.1.&#160;Performance of asymmetric coroutines</b></p>
<div class="table-contents"><table class="table" summary="Performance of asymmetric coroutines">
<colgroup>
<col>
<col>
<col>
<col>
<col>
</colgroup>
<thead><tr>
<th>
<p>
Platform
</p>
</th>
<th>
<p>
switch
</p>
</th>
<th>
<p>
construction (protected stack-allocator)
</p>
</th>
<th>
<p>
construction (preallocated stack-allocator)
</p>
</th>
<th>
<p>
construction (standard stack-allocator)
</p>
</th>
</tr></thead>
<tbody>
<tr>
<td>
<p>
i386 (AMD Athlon 64 DualCore 4400+, Linux 32bit)
</p>
</td>
<td>
<p>
49 ns / 50 cycles
</p>
</td>
<td>
<p>
51 &#181;s / 51407 cycles
</p>
</td>
<td>
<p>
14 &#181;s / 15231 cycles
</p>
</td>
<td>
<p>
14 &#181;s / 15216 cycles
</p>
</td>
</tr>
<tr>
<td>
<p>
x86_64 (Intel Core2 Q6700, Linux 64bit)
</p>
</td>
<td>
<p>
12 ns / 39 cycles
</p>
</td>
<td>
<p>
16 &#181;s / 41802 cycles
</p>
</td>
<td>
<p>
6 &#181;s / 10350 cycles
</p>
</td>
<td>
<p>
6 &#181;s / 18817 cycles
</p>
</td>
</tr>
</tbody>
</table></div>
</div>
<br class="table-break"><div class="table">
<a name="coroutine.performance.performance_of_symmetric_coroutines"></a><p class="title"><b>Table&#160;1.2.&#160;Performance of symmetric coroutines</b></p>
<div class="table-contents"><table class="table" summary="Performance of symmetric coroutines">
<colgroup>
<col>
<col>
<col>
<col>
<col>
</colgroup>
<thead><tr>
<th>
<p>
Platform
</p>
</th>
<th>
<p>
switch
</p>
</th>
<th>
<p>
construction (protected stack-allocator)
</p>
</th>
<th>
<p>
construction (preallocated stack-allocator)
</p>
</th>
<th>
<p>
construction (standard stack-allocator)
</p>
</th>
</tr></thead>
<tbody>
<tr>
<td>
<p>
i386 (AMD Athlon 64 DualCore 4400+, Linux 32bit)
</p>
</td>
<td>
<p>
47 ns / 49 cycles
</p>
</td>
<td>
<p>
27 &#181;s / 28002 cycles
</p>
</td>
<td>
<p>
98 ns / 116 cycles
</p>
</td>
<td>
<p>
319 ns / 328 cycles
</p>
</td>
</tr>
<tr>
<td>
<p>
x86_64 (Intel Core2 Q6700, Linux 64bit)
</p>
</td>
<td>
<p>
10 ns / 33 cycles
</p>
</td>
<td>
<p>
10 &#181;s / 22828 cycles
</p>
</td>
<td>
<p>
42 ns / 710 cycles
</p>
</td>
<td>
<p>
135 ns / 362 cycles
</p>
</td>
</tr>
</tbody>
</table></div>
</div>
<br class="table-break">
</div>
<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr>
<td align="left"></td>
<td align="right"><div class="copyright-footer">Copyright &#169; 2009 Oliver Kowalke<p>
Distributed under the Boost Software License, Version 1.0. (See accompanying
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>)
</p>
</div></td>
</tr></table>
<hr>
<div class="spirit-nav">
<a accesskey="p" href="stack/valgrind.html"><img src="../../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../index.html"><img src="../../../../../doc/src/images/up.png" alt="Up"></a><a accesskey="h" href="../index.html"><img src="../../../../../doc/src/images/home.png" alt="Home"></a><a accesskey="n" href="architectures.html"><img src="../../../../../doc/src/images/next.png" alt="Next"></a>
</div>
</body>
</html>