diff options
Diffstat (limited to 'user_guide/libraries/benchmark.html')
| -rw-r--r-- | user_guide/libraries/benchmark.html | 198 |
1 files changed, 0 insertions, 198 deletions
diff --git a/user_guide/libraries/benchmark.html b/user_guide/libraries/benchmark.html deleted file mode 100644 index 602e6fac0..000000000 --- a/user_guide/libraries/benchmark.html +++ /dev/null @@ -1,198 +0,0 @@ -<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> -<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en"> -<head> - -<meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> -<title>Benchmarking Class : CodeIgniter User Guide</title> - -<style type='text/css' media='all'>@import url('../userguide.css');</style> -<link rel='stylesheet' type='text/css' media='all' href='../userguide.css' /> - -<script type="text/javascript" src="../nav/nav.js"></script> -<script type="text/javascript" src="../nav/prototype.lite.js"></script> -<script type="text/javascript" src="../nav/moo.fx.js"></script> -<script type="text/javascript" src="../nav/user_guide_menu.js"></script> - -<meta http-equiv='expires' content='-1' /> -<meta http-equiv= 'pragma' content='no-cache' /> -<meta name='robots' content='all' /> -<meta name='author' content='ExpressionEngine Dev Team' /> -<meta name='description' content='CodeIgniter User Guide' /> - -</head> -<body> - -<!-- START NAVIGATION --> -<div id="nav"><div id="nav_inner"><script type="text/javascript">create_menu('../');</script></div></div> -<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle_darker.jpg" width="154" height="43" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div> -<div id="masthead"> -<table cellpadding="0" cellspacing="0" border="0" style="width:100%"> -<tr> -<td><h1>CodeIgniter User Guide Version 2.1.0</h1></td> -<td id="breadcrumb_right"><a href="../toc.html">Table of Contents Page</a></td> -</tr> -</table> -</div> -<!-- END NAVIGATION --> - - -<!-- START BREADCRUMB --> -<table cellpadding="0" cellspacing="0" border="0" style="width:100%"> -<tr> -<td id="breadcrumb"> -<a href="http://codeigniter.com/">CodeIgniter Home</a> › -<a href="../index.html">User Guide Home</a> › -Benchmarking Class -</td> -<td id="searchbox"><form method="get" action="http://www.google.com/search"><input type="hidden" name="as_sitesearch" id="as_sitesearch" value="codeigniter.com/user_guide/" />Search User Guide <input type="text" class="input" style="width:200px;" name="q" id="q" size="31" maxlength="255" value="" /> <input type="submit" class="submit" name="sa" value="Go" /></form></td> -</tr> -</table> -<!-- END BREADCRUMB --> - -<br clear="all" /> - - -<!-- START CONTENT --> -<div id="content"> - - -<h1>Benchmarking Class</h1> - -<p>CodeIgniter has a Benchmarking class that is always active, enabling the time difference between any -two marked points to be calculated.</p> - -<p class="important"><strong>Note:</strong> This class is initialized automatically by the system so there is no need to do it manually.</p> - - -<p>In addition, the benchmark is always started the moment the framework is -invoked, and ended by the output class right before sending the final view to the browser, enabling a very accurate -timing of the entire system execution to be shown.</p> - - -<h3>Table of Contents</h3> - -<ul> -<li><a href="#using">Using the Benchmark Class</a></li> -<li><a href="#profiler">Profiling Your Benchmark Points</a></li> -<li><a href="#execution">Displaying Total Execution Time</a></li> -<li><a href="#memory">Displaying Memory Consumption</a></li> -</ul> - - - -<a name="using"></a> -<h2>Using the Benchmark Class</h2> - -<p>The Benchmark class can be used within your <a href="../general/controllers.html">controllers</a>, <a href="../general/views.html">views</a>, or your <a href="../general/models.html">models</a>. The process for usage is this:</p> - -<ol> -<li>Mark a start point</li> -<li>Mark an end point</li> -<li>Run the "elapsed time" function to view the results</li> -</ol> - -<p>Here's an example using real code:</p> - -<code>$this->benchmark->mark('code_start');<br /> -<br /> -// Some code happens here<br /> -<br /> -$this->benchmark->mark('code_end');<br /> -<br /> -echo $this->benchmark->elapsed_time('code_start', 'code_end');</code> - -<p class="important"><strong>Note:</strong> The words "code_start" and "code_end" are arbitrary. They are simply words used to set two markers. You can -use any words you want, and you can set multiple sets of markers. Consider this example:</p> - -<code>$this->benchmark->mark('dog');<br /> -<br /> -// Some code happens here<br /> -<br /> -$this->benchmark->mark('cat');<br /> -<br /> -// More code happens here<br /> -<br /> -$this->benchmark->mark('bird');<br /> -<br /> -echo $this->benchmark->elapsed_time('dog', 'cat');<br /> -echo $this->benchmark->elapsed_time('cat', 'bird');<br /> -echo $this->benchmark->elapsed_time('dog', 'bird');</code> - - -<a name="profiler"></a> -<h2>Profiling Your Benchmark Points</h2> - -<p>If you want your benchmark data to be available to the -<a href="../general/profiling.html">Profiler</a> all of your marked points must be set up in pairs, and -each mark point name must end with <kbd>_start</kbd> and <kbd>_end</kbd>. -Each pair of points must otherwise be named identically. Example:</p> - -<code> -$this->benchmark->mark('my_mark<kbd>_start</kbd>');<br /> -<br /> -// Some code happens here...<br /> -<br /> -$this->benchmark->mark('my_mark<kbd>_end</kbd>'); -<br /><br /> - -$this->benchmark->mark('another_mark<kbd>_start</kbd>');<br /> -<br /> -// Some more code happens here...<br /> -<br /> -$this->benchmark->mark('another_mark<kbd>_end</kbd>'); -</code> - -<p>Please read the <a href="../general/profiling.html">Profiler page</a> for more information.</p> - - -<a name="execution"></a> -<h2>Displaying Total Execution Time</h2> - -<p>If you would like to display the total elapsed time from the moment CodeIgniter starts to the moment the final output -is sent to the browser, simply place this in one of your view templates:</p> - -<code><?php echo $this->benchmark->elapsed_time();?></code> - -<p>You'll notice that it's the same function used in the examples above to calculate the time between two point, except you are -<strong>not</strong> using any parameters. When the parameters are absent, CodeIgniter does not stop the benchmark until right before the final -output is sent to the browser. It doesn't matter where you use the function call, the timer will continue to run until the very end.</p> - -<p>An alternate way to show your elapsed time in your view files is to use this pseudo-variable, if you prefer not to use the pure PHP:</p> -<code>{elapsed_time}</code> - -<p class="important"><strong>Note:</strong> If you want to benchmark anything within your controller -functions you must set your own start/end points.</p> - -<a name="memory"></a> -<h2>Displaying Memory Consumption</h2> - -<p>If your PHP installation is configured with --enable-memory-limit, you can display the amount of memory consumed by the entire -system using the following code in one of your view file:</p> - -<code><?php echo $this->benchmark->memory_usage();?></code> -<p>Note: This function can only be used in your view files. The consumption will reflect the total memory used by the entire app.</p> - -<p>An alternate way to show your memory usage in your view files is to use this pseudo-variable, if you prefer not to use the pure PHP:</p> -<code>{memory_usage}</code> - - - - -</div> -<!-- END CONTENT --> - - - -<div id="footer"> -<p> -Previous Topic: <a href="../doc_style/index.html">Writing Documentaion</a> - · -<a href="#top">Top of Page</a> · -<a href="../index.html">User Guide Home</a> · -Next Topic: <a href="calendar.html">Calendar Class</a> -</p> -<p><a href="http://codeigniter.com">CodeIgniter</a> · Copyright © 2006 - 2011 · <a href="http://ellislab.com/">EllisLab, Inc.</a></p> -</div> - -</body> -</html>
\ No newline at end of file |