[z_archive/KronOS.git] / video / user_guide / general / profiling.html

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Profiling Your Application
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<h1>Profiling Your Application</h1>

<p>The Profiler Class will display benchmark results, queries you have run, and $_POST data at the bottom of your pages.
This information can be useful during development in order to help with debugging and optimization.</p>


<h2>Initializing the Class</h2>

<p class="important"><strong>Important:</strong>&nbsp; This class does <kbd>NOT</kbd> need to be initialized. It is loaded automatically by the
<a href="../libraries/output.html">Output Class</a> if profiling is enabled as shown below.</p>

<h2>Enabling the Profiler</h2>

	<p>To enable the profiler place the following function anywhere within your <a href="controllers.html">Controller</a> functions:</p>
	<code>$this->output->enable_profiler(TRUE);</code>

	<p>When enabled a report will be generated and inserted at the bottom of your pages.</p>

	<p>To disable the profiler you will use:</p>
	<code>$this->output->enable_profiler(FALSE);</code>


<h2>Setting Benchmark Points</h2>

	<p>In order for the Profiler to compile and display your benchmark data you must name your mark points using specific syntax.</p>

	<p>Please read the information on setting Benchmark points in <a href="../libraries/benchmark.html">Benchmark Class</a> page.</p>


<h2>Enabling and Disabling Profiler Sections</h2>

	<p>Each section of Profiler data can be enabled or disabled by setting a corresponding config variable to <var>TRUE</var> or <var>FALSE</var>.  This can be done one of two ways.  First, you can set application wide defaults with the <dfn>application/config/profiler.php</dfn> config file.</p>

	<code>$config['config']&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;= FALSE;<br />
	$config['queries']&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;= FALSE;<br /></code>

	<p>In your controllers, you can override the defaults and config file values by calling the <kbd>set_profiler_sections()</kbd> method of the <a href="../libraries/output.html">Output class</a>:</p>

	<code>$sections = array(<br />
	&nbsp;&nbsp;&nbsp;&nbsp;'config' &nbsp;=> TRUE,<br />
	&nbsp;&nbsp;&nbsp;&nbsp;'queries' => TRUE<br />
	&nbsp;&nbsp;&nbsp;&nbsp;);<br />
	<br />
	$this->output->set_profiler_sections($sections);</code>

	<p>Available sections and the array key used to access them are described in the table below.</p>

	<table cellpadding="0" cellspacing="1" border="0" style="width:100%" class="tableborder">
		<tr>
			<th>Key</th>
			<th>Description</th>
			<th>Default</th>
		</tr>
		<tr>
			<td class="td"><strong>benchmarks</strong></td>
			<td class="td">Elapsed time of Benchmark points and total execution time</td>
			<td class="td">TRUE</td>
		</tr>
		<tr>
			<td class="td"><strong>config</strong></td>
			<td class="td">CodeIgniter Config variables</td>
			<td class="td">TRUE</td>
		</tr>
		<tr>
			<td class="td"><strong>controller_info</strong></td>
			<td class="td">The Controller class and method requested</td>
			<td class="td">TRUE</td>
		</tr>
		<tr>
			<td class="td"><strong>get</strong></td>
			<td class="td">Any GET data passed in the request</td>
			<td class="td">TRUE</td>
		</tr>
		<tr>
			<td class="td"><strong>http_headers</strong></td>
			<td class="td">The HTTP headers for the current request</td>
			<td class="td">TRUE</td>
		</tr>
		<tr>
			<td class="td"><strong>memory_usage</strong></td>
			<td class="td">Amount of memory consumed by the current request, in bytes</td>
			<td class="td">TRUE</td>
		</tr>
		<tr>
			<td class="td"><strong>post</strong></td>
			<td class="td">Any POST data passed in the request</td>
			<td class="td">TRUE</td>
		</tr>
		<tr>
			<td class="td"><strong>queries</strong></td>
			<td class="td">Listing of all database queries executed, including execution time</td>
			<td class="td">TRUE</td>
		</tr>
		<tr>
			<td class="td"><strong>uri_string</strong></td>
			<td class="td">The URI of the current request</td>
			<td class="td">TRUE</td>
		</tr>
		<tr>
			<td class="td"><strong>query_toggle_count</strong></td>
			<td class="td">The number of queries after which the query block will default to hidden.</td>
			<td class="td">25</td>
		</tr>
	</table>


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Commit	Line	Data
59c06b17 CS	1	<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
	2	<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
	3	<head>
	4
	5	<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
	6	<title>Profiling Your Application : CodeIgniter User Guide</title>
	7
	8	<style type='text/css' media='all'>@import url('../userguide.css');</style>
	9	<link rel='stylesheet' type='text/css' media='all' href='../userguide.css' />
	10
	11	<script type="text/javascript" src="../nav/nav.js"></script>
	12	<script type="text/javascript" src="../nav/prototype.lite.js"></script>
	13	<script type="text/javascript" src="../nav/moo.fx.js"></script>
	14	<script type="text/javascript" src="../nav/user_guide_menu.js"></script>
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	16	<meta http-equiv='expires' content='-1' />
	17	<meta http-equiv= 'pragma' content='no-cache' />
	18	<meta name='robots' content='all' />
	19	<meta name='author' content='ExpressionEngine Dev Team' />
	20	<meta name='description' content='CodeIgniter User Guide' />
	21
	22	</head>
	23	<body>
	24
	25	<!-- START NAVIGATION -->
	26	<div id="nav"><div id="nav_inner"><script type="text/javascript">create_menu('../');</script></div></div>
	27	<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>
	28	<div id="masthead">
	29	<table cellpadding="0" cellspacing="0" border="0" style="width:100%">
	30	<tr>
	31	<td><h1>CodeIgniter User Guide Version 2.1.3</h1></td>
	32	<td id="breadcrumb_right"><a href="../toc.html">Table of Contents Page</a></td>
	33	</tr>
	34	</table>
	35	</div>
	36	<!-- END NAVIGATION -->
	37
	38
	39	<!-- START BREADCRUMB -->
	40	<table cellpadding="0" cellspacing="0" border="0" style="width:100%">
	41	<tr>
	42	<td id="breadcrumb">
	43	<a href="http://codeigniter.com/">CodeIgniter Home</a>  ›
	44	<a href="../index.html">User Guide Home</a>  ›
	45	Profiling Your Application
	46	</td>
	47	<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>
	48	</tr>
	49	</table>
	50	<!-- END BREADCRUMB -->
	51
	52	<br clear="all" />
	53
	54
	55	<!-- START CONTENT -->
	56	<div id="content">
	57
	58
	59	<h1>Profiling Your Application</h1>
	60
	61	<p>The Profiler Class will display benchmark results, queries you have run, and $_POST data at the bottom of your pages.
	62	This information can be useful during development in order to help with debugging and optimization.</p>
	63
	64
65	<h2>Initializing the Class</h2>
66
67	<p class="important"><strong>Important:</strong>  This class does <kbd>NOT</kbd> need to be initialized. It is loaded automatically by the
68	<a href="../libraries/output.html">Output Class</a> if profiling is enabled as shown below.</p>
69
70	<h2>Enabling the Profiler</h2>
71
72	<p>To enable the profiler place the following function anywhere within your <a href="controllers.html">Controller</a> functions:</p>
73	<code>$this->output->enable_profiler(TRUE);</code>
74
75	<p>When enabled a report will be generated and inserted at the bottom of your pages.</p>
76
77	<p>To disable the profiler you will use:</p>
78	<code>$this->output->enable_profiler(FALSE);</code>
79
80
81	<h2>Setting Benchmark Points</h2>
82
83	<p>In order for the Profiler to compile and display your benchmark data you must name your mark points using specific syntax.</p>
84
85	<p>Please read the information on setting Benchmark points in <a href="../libraries/benchmark.html">Benchmark Class</a> page.</p>
86
87
88	<h2>Enabling and Disabling Profiler Sections</h2>
89
90	<p>Each section of Profiler data can be enabled or disabled by setting a corresponding config variable to <var>TRUE</var> or <var>FALSE</var>. This can be done one of two ways. First, you can set application wide defaults with the <dfn>application/config/profiler.php</dfn> config file.</p>
91
92	<code>$config['config']          = FALSE;<br />
93	$config['queries']         = FALSE;<br /></code>
94
95	<p>In your controllers, you can override the defaults and config file values by calling the <kbd>set_profiler_sections()</kbd> method of the <a href="../libraries/output.html">Output class</a>:</p>
96
97	<code>$sections = array(<br />
98	'config'  => TRUE,<br />
99	'queries' => TRUE<br />
100	);<br />
101	<br />
102	$this->output->set_profiler_sections($sections);</code>
103
104	<p>Available sections and the array key used to access them are described in the table below.</p>
105
106	<table cellpadding="0" cellspacing="1" border="0" style="width:100%" class="tableborder">
107	<tr>
108	<th>Key</th>
109	<th>Description</th>
110	<th>Default</th>
111	</tr>
112	<tr>
113	<td class="td"><strong>benchmarks</strong></td>
114	<td class="td">Elapsed time of Benchmark points and total execution time</td>
115	<td class="td">TRUE</td>
116	</tr>
117	<tr>
118	<td class="td"><strong>config</strong></td>
119	<td class="td">CodeIgniter Config variables</td>
120	<td class="td">TRUE</td>
121	</tr>
122	<tr>
123	<td class="td"><strong>controller_info</strong></td>
124	<td class="td">The Controller class and method requested</td>
125	<td class="td">TRUE</td>
126	</tr>
127	<tr>
128	<td class="td"><strong>get</strong></td>
129	<td class="td">Any GET data passed in the request</td>
130	<td class="td">TRUE</td>
131	</tr>
132	<tr>
133	<td class="td"><strong>http_headers</strong></td>
134	<td class="td">The HTTP headers for the current request</td>
135	<td class="td">TRUE</td>
136	</tr>
137	<tr>
138	<td class="td"><strong>memory_usage</strong></td>
139	<td class="td">Amount of memory consumed by the current request, in bytes</td>
140	<td class="td">TRUE</td>
141	</tr>
142	<tr>
143	<td class="td"><strong>post</strong></td>
144	<td class="td">Any POST data passed in the request</td>
145	<td class="td">TRUE</td>
146	</tr>
147	<tr>
148	<td class="td"><strong>queries</strong></td>
149	<td class="td">Listing of all database queries executed, including execution time</td>
150	<td class="td">TRUE</td>
151	</tr>
152	<tr>
153	<td class="td"><strong>uri_string</strong></td>
154	<td class="td">The URI of the current request</td>
155	<td class="td">TRUE</td>
156	</tr>
157	<tr>
158	<td class="td"><strong>query_toggle_count</strong></td>
159	<td class="td">The number of queries after which the query block will default to hidden.</td>
160	<td class="td">25</td>
161	</tr>
162	</table>
163
164
165	</div>
166	<!-- END CONTENT -->
167
168
169	<div id="footer">
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173	<a href="#top">Top of Page</a>   ·
174	<a href="../index.html">User Guide Home</a>   ·
175	Next Topic:  <a href="managing_apps.html">Managing Applications</a>
176	</p>
177	<p><a href="http://codeigniter.com">CodeIgniter</a>  ·  Copyright © 2006 - 2012  ·  <a href="http://ellislab.com/">EllisLab, Inc.</a></p>
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