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2010-04-22 Jonathan Wakely <jwakely.gcc@gmail.com> * doc/xml/faq.xml: Link to manual. * doc/xml/manual/using.xml: Expand dynamic libraries section. * doc/xml/manual/strings.xml: Mention shrink_to_fit() member. * doc/xml/manual/prerequisites.xml: Link to doxygen requirements. * doc/xml/manual/appendix_contributing.xml: Update Bash version. * doc/html/*: Regenerate. From-SVN: r158624
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2.8 KiB
HTML
19 lines
2.8 KiB
HTML
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>Empirical Cost Model</title><meta name="generator" content="DocBook XSL Stylesheets V1.75.2" /><meta name="keywords" content=" C++ , library , profile " /><meta name="keywords" content=" ISO C++ , library " /><link rel="home" href="../spine.html" title="The GNU C++ Library Documentation" /><link rel="up" href="profile_mode.html" title="Chapter 19. Profile Mode" /><link rel="prev" href="bk01pt03ch19s03.html" title="Extensions for Custom Containers" /><link rel="next" href="bk01pt03ch19s05.html" title="Implementation Issues" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Empirical Cost Model</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="bk01pt03ch19s03.html">Prev</a> </td><th width="60%" align="center">Chapter 19. Profile Mode</th><td width="20%" align="right"> <a accesskey="n" href="bk01pt03ch19s05.html">Next</a></td></tr></table><hr /></div><div class="sect1" title="Empirical Cost Model"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="manual.ext.profile_mode.cost_model"></a>Empirical Cost Model</h2></div></div></div><p>
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Currently, the cost model uses formulas with predefined relative weights
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for alternative containers or container implementations. For instance,
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iterating through a vector is X times faster than iterating through a list.
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</p><p>
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(Under development.)
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We are working on customizing this to a particular machine by providing
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an automated way to compute the actual relative weights for operations
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on the given machine.
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</p><p>
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(Under development.)
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We plan to provide a performance parameter database format that can be
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filled in either by hand or by an automated training mechanism.
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The analysis module will then use this database instead of the built in.
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generic parameters.
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</p></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="bk01pt03ch19s03.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="profile_mode.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="bk01pt03ch19s05.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Extensions for Custom Containers </td><td width="20%" align="center"><a accesskey="h" href="../spine.html">Home</a></td><td width="40%" align="right" valign="top"> Implementation Issues</td></tr></table></div></body></html>
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