PageRenderTime 46ms CodeModel.GetById 11ms app.highlight 26ms RepoModel.GetById 1ms app.codeStats 1ms

/user_guide/general/profiling.html

Relevant Search: With Applications for Solr and Elasticsearch

For more in depth reading about search, ranking and generally everything you could ever want to know about how lucene, elasticsearch or solr work under the hood I highly suggest this book. Easily one of the most interesting technical books I have read in a long time. If you are tasked with solving search relevance problems even if not in Solr or Elasticsearch it should be your first reference. Amazon Affiliate Link
https://bitbucket.org/bo_hmb/bo_hmb
HTML | 624 lines | 536 code | 87 blank | 1 comment | 0 complexity | 8809879f2104f1e578ad6aacba199a16 MD5 | raw file
  1
  2
  3<!DOCTYPE html>
  4<!--[if IE 8]><html class="no-js lt-ie9" lang="en" > <![endif]-->
  5<!--[if gt IE 8]><!--> <html class="no-js" lang="en" > <!--<![endif]-->
  6<head>
  7  <meta charset="utf-8">
  8  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  9  
 10  <title>Profiling Your Application &mdash; CodeIgniter 3.1.8 documentation</title>
 11  
 12
 13  
 14  
 15    <link rel="shortcut icon" href="../_static/ci-icon.ico"/>
 16  
 17
 18  
 19  <link href='https://fonts.googleapis.com/css?family=Lato:400,700,400italic,700italic|Roboto+Slab:400,700|Inconsolata:400,700&subset=latin,cyrillic' rel='stylesheet' type='text/css'>
 20
 21  
 22  
 23    
 24
 25  
 26
 27  
 28  
 29    <link rel="stylesheet" href="../_static/css/citheme.css" type="text/css" />
 30  
 31
 32  
 33        <link rel="index" title="Index"
 34              href="../genindex.html"/>
 35        <link rel="search" title="Search" href="../search.html"/>
 36    <link rel="top" title="CodeIgniter 3.1.8 documentation" href="../index.html"/>
 37        <link rel="up" title="General Topics" href="index.html"/>
 38        <link rel="next" title="Running via the CLI" href="cli.html"/>
 39        <link rel="prev" title="Web Page Caching" href="caching.html"/> 
 40
 41  
 42  <script src="https://cdnjs.cloudflare.com/ajax/libs/modernizr/2.6.2/modernizr.min.js"></script>
 43
 44</head>
 45
 46<body class="wy-body-for-nav" role="document">
 47
 48  <div id="nav">
 49  <div id="nav_inner">
 50    
 51    
 52    
 53      <div id="pulldown-menu" class="ciNav">
 54        <ul>
 55<li class="toctree-l1"><a class="reference internal" href="welcome.html">Welcome to CodeIgniter</a></li>
 56</ul>
 57<ul>
 58<li class="toctree-l1"><a class="reference internal" href="../installation/index.html">Installation Instructions</a><ul>
 59<li class="toctree-l2"><a class="reference internal" href="../installation/downloads.html">Downloading CodeIgniter</a></li>
 60<li class="toctree-l2"><a class="reference internal" href="../installation/index.html">Installation Instructions</a></li>
 61<li class="toctree-l2"><a class="reference internal" href="../installation/upgrading.html">Upgrading From a Previous Version</a></li>
 62<li class="toctree-l2"><a class="reference internal" href="../installation/troubleshooting.html">Troubleshooting</a></li>
 63</ul>
 64</li>
 65</ul>
 66<ul>
 67<li class="toctree-l1"><a class="reference internal" href="../overview/index.html">CodeIgniter Overview</a><ul>
 68<li class="toctree-l2"><a class="reference internal" href="../overview/getting_started.html">Getting Started</a></li>
 69<li class="toctree-l2"><a class="reference internal" href="../overview/at_a_glance.html">CodeIgniter at a Glance</a></li>
 70<li class="toctree-l2"><a class="reference internal" href="../overview/features.html">Supported Features</a></li>
 71<li class="toctree-l2"><a class="reference internal" href="../overview/appflow.html">Application Flow Chart</a></li>
 72<li class="toctree-l2"><a class="reference internal" href="../overview/mvc.html">Model-View-Controller</a></li>
 73<li class="toctree-l2"><a class="reference internal" href="../overview/goals.html">Architectural Goals</a></li>
 74</ul>
 75</li>
 76</ul>
 77<ul>
 78<li class="toctree-l1"><a class="reference internal" href="../tutorial/index.html">Tutorial</a><ul>
 79<li class="toctree-l2"><a class="reference internal" href="../tutorial/static_pages.html">Static pages</a></li>
 80<li class="toctree-l2"><a class="reference internal" href="../tutorial/news_section.html">News section</a></li>
 81<li class="toctree-l2"><a class="reference internal" href="../tutorial/create_news_items.html">Create news items</a></li>
 82<li class="toctree-l2"><a class="reference internal" href="../tutorial/conclusion.html">Conclusion</a></li>
 83</ul>
 84</li>
 85</ul>
 86<ul>
 87<li class="toctree-l1"><a class="reference internal" href="../contributing/index.html">Contributing to CodeIgniter</a><ul>
 88<li class="toctree-l2"><a class="reference internal" href="../documentation/index.html">Writing CodeIgniter Documentation</a></li>
 89<li class="toctree-l2"><a class="reference internal" href="../DCO.html">Developer’s Certificate of Origin 1.1</a></li>
 90</ul>
 91</li>
 92</ul>
 93<ul class="current">
 94<li class="toctree-l1 current"><a class="reference internal" href="index.html">General Topics</a><ul class="current">
 95<li class="toctree-l2"><a class="reference internal" href="urls.html">CodeIgniter URLs</a></li>
 96<li class="toctree-l2"><a class="reference internal" href="controllers.html">Controllers</a></li>
 97<li class="toctree-l2"><a class="reference internal" href="reserved_names.html">Reserved Names</a></li>
 98<li class="toctree-l2"><a class="reference internal" href="views.html">Views</a></li>
 99<li class="toctree-l2"><a class="reference internal" href="models.html">Models</a></li>
100<li class="toctree-l2"><a class="reference internal" href="helpers.html">Helpers</a></li>
101<li class="toctree-l2"><a class="reference internal" href="libraries.html">Using CodeIgniter Libraries</a></li>
102<li class="toctree-l2"><a class="reference internal" href="creating_libraries.html">Creating Libraries</a></li>
103<li class="toctree-l2"><a class="reference internal" href="drivers.html">Using CodeIgniter Drivers</a></li>
104<li class="toctree-l2"><a class="reference internal" href="creating_drivers.html">Creating Drivers</a></li>
105<li class="toctree-l2"><a class="reference internal" href="core_classes.html">Creating Core System Classes</a></li>
106<li class="toctree-l2"><a class="reference internal" href="ancillary_classes.html">Creating Ancillary Classes</a></li>
107<li class="toctree-l2"><a class="reference internal" href="hooks.html">Hooks - Extending the Framework Core</a></li>
108<li class="toctree-l2"><a class="reference internal" href="autoloader.html">Auto-loading Resources</a></li>
109<li class="toctree-l2"><a class="reference internal" href="common_functions.html">Common Functions</a></li>
110<li class="toctree-l2"><a class="reference internal" href="compatibility_functions.html">Compatibility Functions</a></li>
111<li class="toctree-l2"><a class="reference internal" href="routing.html">URI Routing</a></li>
112<li class="toctree-l2"><a class="reference internal" href="errors.html">Error Handling</a></li>
113<li class="toctree-l2"><a class="reference internal" href="caching.html">Caching</a></li>
114<li class="toctree-l2 current"><a class="current reference internal" href="#">Profiling Your Application</a></li>
115<li class="toctree-l2"><a class="reference internal" href="cli.html">Running via the CLI</a></li>
116<li class="toctree-l2"><a class="reference internal" href="managing_apps.html">Managing your Applications</a></li>
117<li class="toctree-l2"><a class="reference internal" href="environments.html">Handling Multiple Environments</a></li>
118<li class="toctree-l2"><a class="reference internal" href="alternative_php.html">Alternate PHP Syntax for View Files</a></li>
119<li class="toctree-l2"><a class="reference internal" href="security.html">Security</a></li>
120<li class="toctree-l2"><a class="reference internal" href="styleguide.html">PHP Style Guide</a></li>
121</ul>
122</li>
123</ul>
124<ul>
125<li class="toctree-l1"><a class="reference internal" href="../libraries/index.html">Libraries</a><ul>
126<li class="toctree-l2"><a class="reference internal" href="../libraries/benchmark.html">Benchmarking Class</a></li>
127<li class="toctree-l2"><a class="reference internal" href="../libraries/caching.html">Caching Driver</a></li>
128<li class="toctree-l2"><a class="reference internal" href="../libraries/calendar.html">Calendaring Class</a></li>
129<li class="toctree-l2"><a class="reference internal" href="../libraries/cart.html">Shopping Cart Class</a></li>
130<li class="toctree-l2"><a class="reference internal" href="../libraries/config.html">Config Class</a></li>
131<li class="toctree-l2"><a class="reference internal" href="../libraries/email.html">Email Class</a></li>
132<li class="toctree-l2"><a class="reference internal" href="../libraries/encrypt.html">Encrypt Class</a></li>
133<li class="toctree-l2"><a class="reference internal" href="../libraries/encryption.html">Encryption Library</a></li>
134<li class="toctree-l2"><a class="reference internal" href="../libraries/file_uploading.html">File Uploading Class</a></li>
135<li class="toctree-l2"><a class="reference internal" href="../libraries/form_validation.html">Form Validation</a></li>
136<li class="toctree-l2"><a class="reference internal" href="../libraries/ftp.html">FTP Class</a></li>
137<li class="toctree-l2"><a class="reference internal" href="../libraries/image_lib.html">Image Manipulation Class</a></li>
138<li class="toctree-l2"><a class="reference internal" href="../libraries/input.html">Input Class</a></li>
139<li class="toctree-l2"><a class="reference internal" href="../libraries/javascript.html">Javascript Class</a></li>
140<li class="toctree-l2"><a class="reference internal" href="../libraries/language.html">Language Class</a></li>
141<li class="toctree-l2"><a class="reference internal" href="../libraries/loader.html">Loader Class</a></li>
142<li class="toctree-l2"><a class="reference internal" href="../libraries/migration.html">Migrations Class</a></li>
143<li class="toctree-l2"><a class="reference internal" href="../libraries/output.html">Output Class</a></li>
144<li class="toctree-l2"><a class="reference internal" href="../libraries/pagination.html">Pagination Class</a></li>
145<li class="toctree-l2"><a class="reference internal" href="../libraries/parser.html">Template Parser Class</a></li>
146<li class="toctree-l2"><a class="reference internal" href="../libraries/security.html">Security Class</a></li>
147<li class="toctree-l2"><a class="reference internal" href="../libraries/sessions.html">Session Library</a></li>
148<li class="toctree-l2"><a class="reference internal" href="../libraries/table.html">HTML Table Class</a></li>
149<li class="toctree-l2"><a class="reference internal" href="../libraries/trackback.html">Trackback Class</a></li>
150<li class="toctree-l2"><a class="reference internal" href="../libraries/typography.html">Typography Class</a></li>
151<li class="toctree-l2"><a class="reference internal" href="../libraries/unit_testing.html">Unit Testing Class</a></li>
152<li class="toctree-l2"><a class="reference internal" href="../libraries/uri.html">URI Class</a></li>
153<li class="toctree-l2"><a class="reference internal" href="../libraries/user_agent.html">User Agent Class</a></li>
154<li class="toctree-l2"><a class="reference internal" href="../libraries/xmlrpc.html">XML-RPC and XML-RPC Server Classes</a></li>
155<li class="toctree-l2"><a class="reference internal" href="../libraries/zip.html">Zip Encoding Class</a></li>
156</ul>
157</li>
158</ul>
159<ul>
160<li class="toctree-l1"><a class="reference internal" href="../database/index.html">Database Reference</a><ul>
161<li class="toctree-l2"><a class="reference internal" href="../database/examples.html">Quick Start: Usage Examples</a></li>
162<li class="toctree-l2"><a class="reference internal" href="../database/configuration.html">Database Configuration</a></li>
163<li class="toctree-l2"><a class="reference internal" href="../database/connecting.html">Connecting to a Database</a></li>
164<li class="toctree-l2"><a class="reference internal" href="../database/queries.html">Running Queries</a></li>
165<li class="toctree-l2"><a class="reference internal" href="../database/results.html">Generating Query Results</a></li>
166<li class="toctree-l2"><a class="reference internal" href="../database/helpers.html">Query Helper Functions</a></li>
167<li class="toctree-l2"><a class="reference internal" href="../database/query_builder.html">Query Builder Class</a></li>
168<li class="toctree-l2"><a class="reference internal" href="../database/transactions.html">Transactions</a></li>
169<li class="toctree-l2"><a class="reference internal" href="../database/metadata.html">Getting MetaData</a></li>
170<li class="toctree-l2"><a class="reference internal" href="../database/call_function.html">Custom Function Calls</a></li>
171<li class="toctree-l2"><a class="reference internal" href="../database/caching.html">Query Caching</a></li>
172<li class="toctree-l2"><a class="reference internal" href="../database/forge.html">Database Manipulation with Database Forge</a></li>
173<li class="toctree-l2"><a class="reference internal" href="../database/utilities.html">Database Utilities Class</a></li>
174<li class="toctree-l2"><a class="reference internal" href="../database/db_driver_reference.html">Database Driver Reference</a></li>
175</ul>
176</li>
177</ul>
178<ul>
179<li class="toctree-l1"><a class="reference internal" href="../helpers/index.html">Helpers</a><ul>
180<li class="toctree-l2"><a class="reference internal" href="../helpers/array_helper.html">Array Helper</a></li>
181<li class="toctree-l2"><a class="reference internal" href="../helpers/captcha_helper.html">CAPTCHA Helper</a></li>
182<li class="toctree-l2"><a class="reference internal" href="../helpers/cookie_helper.html">Cookie Helper</a></li>
183<li class="toctree-l2"><a class="reference internal" href="../helpers/date_helper.html">Date Helper</a></li>
184<li class="toctree-l2"><a class="reference internal" href="../helpers/directory_helper.html">Directory Helper</a></li>
185<li class="toctree-l2"><a class="reference internal" href="../helpers/download_helper.html">Download Helper</a></li>
186<li class="toctree-l2"><a class="reference internal" href="../helpers/email_helper.html">Email Helper</a></li>
187<li class="toctree-l2"><a class="reference internal" href="../helpers/file_helper.html">File Helper</a></li>
188<li class="toctree-l2"><a class="reference internal" href="../helpers/form_helper.html">Form Helper</a></li>
189<li class="toctree-l2"><a class="reference internal" href="../helpers/html_helper.html">HTML Helper</a></li>
190<li class="toctree-l2"><a class="reference internal" href="../helpers/inflector_helper.html">Inflector Helper</a></li>
191<li class="toctree-l2"><a class="reference internal" href="../helpers/language_helper.html">Language Helper</a></li>
192<li class="toctree-l2"><a class="reference internal" href="../helpers/number_helper.html">Number Helper</a></li>
193<li class="toctree-l2"><a class="reference internal" href="../helpers/path_helper.html">Path Helper</a></li>
194<li class="toctree-l2"><a class="reference internal" href="../helpers/security_helper.html">Security Helper</a></li>
195<li class="toctree-l2"><a class="reference internal" href="../helpers/smiley_helper.html">Smiley Helper</a></li>
196<li class="toctree-l2"><a class="reference internal" href="../helpers/string_helper.html">String Helper</a></li>
197<li class="toctree-l2"><a class="reference internal" href="../helpers/text_helper.html">Text Helper</a></li>
198<li class="toctree-l2"><a class="reference internal" href="../helpers/typography_helper.html">Typography Helper</a></li>
199<li class="toctree-l2"><a class="reference internal" href="../helpers/url_helper.html">URL Helper</a></li>
200<li class="toctree-l2"><a class="reference internal" href="../helpers/xml_helper.html">XML Helper</a></li>
201</ul>
202</li>
203</ul>
204
205      </div>
206    
207      
208  </div>
209</div>
210<div id="nav2">
211  <a href="#" id="openToc">
212    <img src="data:image/jpeg;base64,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" title="Toggle Table of Contents" alt="Toggle Table of Contents" />
213  </a>
214</div>
215
216  <div class="wy-grid-for-nav">
217
218    
219    <nav data-toggle="wy-nav-shift" class="wy-nav-side">
220      <div class="wy-side-nav-search">
221        
222          <a href="../index.html" class="fa fa-home"> CodeIgniter</a>
223        
224        
225<div role="search">
226  <form id="rtd-search-form" class="wy-form" action="../search.html" method="get">
227    <input type="text" name="q" placeholder="Search docs" />
228    <input type="hidden" name="check_keywords" value="yes" />
229    <input type="hidden" name="area" value="default" />
230  </form>
231</div>
232      </div>
233
234      <div class="wy-menu wy-menu-vertical" data-spy="affix" role="navigation" aria-label="main navigation">
235        
236          
237          
238              <ul>
239<li class="toctree-l1"><a class="reference internal" href="welcome.html">Welcome to CodeIgniter</a></li>
240</ul>
241<ul>
242<li class="toctree-l1"><a class="reference internal" href="../installation/index.html">Installation Instructions</a><ul>
243<li class="toctree-l2"><a class="reference internal" href="../installation/downloads.html">Downloading CodeIgniter</a></li>
244<li class="toctree-l2"><a class="reference internal" href="../installation/index.html">Installation Instructions</a></li>
245<li class="toctree-l2"><a class="reference internal" href="../installation/upgrading.html">Upgrading From a Previous Version</a></li>
246<li class="toctree-l2"><a class="reference internal" href="../installation/troubleshooting.html">Troubleshooting</a></li>
247</ul>
248</li>
249</ul>
250<ul>
251<li class="toctree-l1"><a class="reference internal" href="../overview/index.html">CodeIgniter Overview</a><ul>
252<li class="toctree-l2"><a class="reference internal" href="../overview/getting_started.html">Getting Started</a></li>
253<li class="toctree-l2"><a class="reference internal" href="../overview/at_a_glance.html">CodeIgniter at a Glance</a></li>
254<li class="toctree-l2"><a class="reference internal" href="../overview/features.html">Supported Features</a></li>
255<li class="toctree-l2"><a class="reference internal" href="../overview/appflow.html">Application Flow Chart</a></li>
256<li class="toctree-l2"><a class="reference internal" href="../overview/mvc.html">Model-View-Controller</a></li>
257<li class="toctree-l2"><a class="reference internal" href="../overview/goals.html">Architectural Goals</a></li>
258</ul>
259</li>
260</ul>
261<ul>
262<li class="toctree-l1"><a class="reference internal" href="../tutorial/index.html">Tutorial</a><ul>
263<li class="toctree-l2"><a class="reference internal" href="../tutorial/static_pages.html">Static pages</a></li>
264<li class="toctree-l2"><a class="reference internal" href="../tutorial/news_section.html">News section</a></li>
265<li class="toctree-l2"><a class="reference internal" href="../tutorial/create_news_items.html">Create news items</a></li>
266<li class="toctree-l2"><a class="reference internal" href="../tutorial/conclusion.html">Conclusion</a></li>
267</ul>
268</li>
269</ul>
270<ul>
271<li class="toctree-l1"><a class="reference internal" href="../contributing/index.html">Contributing to CodeIgniter</a><ul>
272<li class="toctree-l2"><a class="reference internal" href="../documentation/index.html">Writing CodeIgniter Documentation</a></li>
273<li class="toctree-l2"><a class="reference internal" href="../DCO.html">Developer’s Certificate of Origin 1.1</a></li>
274</ul>
275</li>
276</ul>
277<ul class="current">
278<li class="toctree-l1 current"><a class="reference internal" href="index.html">General Topics</a><ul class="current">
279<li class="toctree-l2"><a class="reference internal" href="urls.html">CodeIgniter URLs</a></li>
280<li class="toctree-l2"><a class="reference internal" href="controllers.html">Controllers</a></li>
281<li class="toctree-l2"><a class="reference internal" href="reserved_names.html">Reserved Names</a></li>
282<li class="toctree-l2"><a class="reference internal" href="views.html">Views</a></li>
283<li class="toctree-l2"><a class="reference internal" href="models.html">Models</a></li>
284<li class="toctree-l2"><a class="reference internal" href="helpers.html">Helpers</a></li>
285<li class="toctree-l2"><a class="reference internal" href="libraries.html">Using CodeIgniter Libraries</a></li>
286<li class="toctree-l2"><a class="reference internal" href="creating_libraries.html">Creating Libraries</a></li>
287<li class="toctree-l2"><a class="reference internal" href="drivers.html">Using CodeIgniter Drivers</a></li>
288<li class="toctree-l2"><a class="reference internal" href="creating_drivers.html">Creating Drivers</a></li>
289<li class="toctree-l2"><a class="reference internal" href="core_classes.html">Creating Core System Classes</a></li>
290<li class="toctree-l2"><a class="reference internal" href="ancillary_classes.html">Creating Ancillary Classes</a></li>
291<li class="toctree-l2"><a class="reference internal" href="hooks.html">Hooks - Extending the Framework Core</a></li>
292<li class="toctree-l2"><a class="reference internal" href="autoloader.html">Auto-loading Resources</a></li>
293<li class="toctree-l2"><a class="reference internal" href="common_functions.html">Common Functions</a></li>
294<li class="toctree-l2"><a class="reference internal" href="compatibility_functions.html">Compatibility Functions</a></li>
295<li class="toctree-l2"><a class="reference internal" href="routing.html">URI Routing</a></li>
296<li class="toctree-l2"><a class="reference internal" href="errors.html">Error Handling</a></li>
297<li class="toctree-l2"><a class="reference internal" href="caching.html">Caching</a></li>
298<li class="toctree-l2 current"><a class="current reference internal" href="#">Profiling Your Application</a></li>
299<li class="toctree-l2"><a class="reference internal" href="cli.html">Running via the CLI</a></li>
300<li class="toctree-l2"><a class="reference internal" href="managing_apps.html">Managing your Applications</a></li>
301<li class="toctree-l2"><a class="reference internal" href="environments.html">Handling Multiple Environments</a></li>
302<li class="toctree-l2"><a class="reference internal" href="alternative_php.html">Alternate PHP Syntax for View Files</a></li>
303<li class="toctree-l2"><a class="reference internal" href="security.html">Security</a></li>
304<li class="toctree-l2"><a class="reference internal" href="styleguide.html">PHP Style Guide</a></li>
305</ul>
306</li>
307</ul>
308<ul>
309<li class="toctree-l1"><a class="reference internal" href="../libraries/index.html">Libraries</a><ul>
310<li class="toctree-l2"><a class="reference internal" href="../libraries/benchmark.html">Benchmarking Class</a></li>
311<li class="toctree-l2"><a class="reference internal" href="../libraries/caching.html">Caching Driver</a></li>
312<li class="toctree-l2"><a class="reference internal" href="../libraries/calendar.html">Calendaring Class</a></li>
313<li class="toctree-l2"><a class="reference internal" href="../libraries/cart.html">Shopping Cart Class</a></li>
314<li class="toctree-l2"><a class="reference internal" href="../libraries/config.html">Config Class</a></li>
315<li class="toctree-l2"><a class="reference internal" href="../libraries/email.html">Email Class</a></li>
316<li class="toctree-l2"><a class="reference internal" href="../libraries/encrypt.html">Encrypt Class</a></li>
317<li class="toctree-l2"><a class="reference internal" href="../libraries/encryption.html">Encryption Library</a></li>
318<li class="toctree-l2"><a class="reference internal" href="../libraries/file_uploading.html">File Uploading Class</a></li>
319<li class="toctree-l2"><a class="reference internal" href="../libraries/form_validation.html">Form Validation</a></li>
320<li class="toctree-l2"><a class="reference internal" href="../libraries/ftp.html">FTP Class</a></li>
321<li class="toctree-l2"><a class="reference internal" href="../libraries/image_lib.html">Image Manipulation Class</a></li>
322<li class="toctree-l2"><a class="reference internal" href="../libraries/input.html">Input Class</a></li>
323<li class="toctree-l2"><a class="reference internal" href="../libraries/javascript.html">Javascript Class</a></li>
324<li class="toctree-l2"><a class="reference internal" href="../libraries/language.html">Language Class</a></li>
325<li class="toctree-l2"><a class="reference internal" href="../libraries/loader.html">Loader Class</a></li>
326<li class="toctree-l2"><a class="reference internal" href="../libraries/migration.html">Migrations Class</a></li>
327<li class="toctree-l2"><a class="reference internal" href="../libraries/output.html">Output Class</a></li>
328<li class="toctree-l2"><a class="reference internal" href="../libraries/pagination.html">Pagination Class</a></li>
329<li class="toctree-l2"><a class="reference internal" href="../libraries/parser.html">Template Parser Class</a></li>
330<li class="toctree-l2"><a class="reference internal" href="../libraries/security.html">Security Class</a></li>
331<li class="toctree-l2"><a class="reference internal" href="../libraries/sessions.html">Session Library</a></li>
332<li class="toctree-l2"><a class="reference internal" href="../libraries/table.html">HTML Table Class</a></li>
333<li class="toctree-l2"><a class="reference internal" href="../libraries/trackback.html">Trackback Class</a></li>
334<li class="toctree-l2"><a class="reference internal" href="../libraries/typography.html">Typography Class</a></li>
335<li class="toctree-l2"><a class="reference internal" href="../libraries/unit_testing.html">Unit Testing Class</a></li>
336<li class="toctree-l2"><a class="reference internal" href="../libraries/uri.html">URI Class</a></li>
337<li class="toctree-l2"><a class="reference internal" href="../libraries/user_agent.html">User Agent Class</a></li>
338<li class="toctree-l2"><a class="reference internal" href="../libraries/xmlrpc.html">XML-RPC and XML-RPC Server Classes</a></li>
339<li class="toctree-l2"><a class="reference internal" href="../libraries/zip.html">Zip Encoding Class</a></li>
340</ul>
341</li>
342</ul>
343<ul>
344<li class="toctree-l1"><a class="reference internal" href="../database/index.html">Database Reference</a><ul>
345<li class="toctree-l2"><a class="reference internal" href="../database/examples.html">Quick Start: Usage Examples</a></li>
346<li class="toctree-l2"><a class="reference internal" href="../database/configuration.html">Database Configuration</a></li>
347<li class="toctree-l2"><a class="reference internal" href="../database/connecting.html">Connecting to a Database</a></li>
348<li class="toctree-l2"><a class="reference internal" href="../database/queries.html">Running Queries</a></li>
349<li class="toctree-l2"><a class="reference internal" href="../database/results.html">Generating Query Results</a></li>
350<li class="toctree-l2"><a class="reference internal" href="../database/helpers.html">Query Helper Functions</a></li>
351<li class="toctree-l2"><a class="reference internal" href="../database/query_builder.html">Query Builder Class</a></li>
352<li class="toctree-l2"><a class="reference internal" href="../database/transactions.html">Transactions</a></li>
353<li class="toctree-l2"><a class="reference internal" href="../database/metadata.html">Getting MetaData</a></li>
354<li class="toctree-l2"><a class="reference internal" href="../database/call_function.html">Custom Function Calls</a></li>
355<li class="toctree-l2"><a class="reference internal" href="../database/caching.html">Query Caching</a></li>
356<li class="toctree-l2"><a class="reference internal" href="../database/forge.html">Database Manipulation with Database Forge</a></li>
357<li class="toctree-l2"><a class="reference internal" href="../database/utilities.html">Database Utilities Class</a></li>
358<li class="toctree-l2"><a class="reference internal" href="../database/db_driver_reference.html">Database Driver Reference</a></li>
359</ul>
360</li>
361</ul>
362<ul>
363<li class="toctree-l1"><a class="reference internal" href="../helpers/index.html">Helpers</a><ul>
364<li class="toctree-l2"><a class="reference internal" href="../helpers/array_helper.html">Array Helper</a></li>
365<li class="toctree-l2"><a class="reference internal" href="../helpers/captcha_helper.html">CAPTCHA Helper</a></li>
366<li class="toctree-l2"><a class="reference internal" href="../helpers/cookie_helper.html">Cookie Helper</a></li>
367<li class="toctree-l2"><a class="reference internal" href="../helpers/date_helper.html">Date Helper</a></li>
368<li class="toctree-l2"><a class="reference internal" href="../helpers/directory_helper.html">Directory Helper</a></li>
369<li class="toctree-l2"><a class="reference internal" href="../helpers/download_helper.html">Download Helper</a></li>
370<li class="toctree-l2"><a class="reference internal" href="../helpers/email_helper.html">Email Helper</a></li>
371<li class="toctree-l2"><a class="reference internal" href="../helpers/file_helper.html">File Helper</a></li>
372<li class="toctree-l2"><a class="reference internal" href="../helpers/form_helper.html">Form Helper</a></li>
373<li class="toctree-l2"><a class="reference internal" href="../helpers/html_helper.html">HTML Helper</a></li>
374<li class="toctree-l2"><a class="reference internal" href="../helpers/inflector_helper.html">Inflector Helper</a></li>
375<li class="toctree-l2"><a class="reference internal" href="../helpers/language_helper.html">Language Helper</a></li>
376<li class="toctree-l2"><a class="reference internal" href="../helpers/number_helper.html">Number Helper</a></li>
377<li class="toctree-l2"><a class="reference internal" href="../helpers/path_helper.html">Path Helper</a></li>
378<li class="toctree-l2"><a class="reference internal" href="../helpers/security_helper.html">Security Helper</a></li>
379<li class="toctree-l2"><a class="reference internal" href="../helpers/smiley_helper.html">Smiley Helper</a></li>
380<li class="toctree-l2"><a class="reference internal" href="../helpers/string_helper.html">String Helper</a></li>
381<li class="toctree-l2"><a class="reference internal" href="../helpers/text_helper.html">Text Helper</a></li>
382<li class="toctree-l2"><a class="reference internal" href="../helpers/typography_helper.html">Typography Helper</a></li>
383<li class="toctree-l2"><a class="reference internal" href="../helpers/url_helper.html">URL Helper</a></li>
384<li class="toctree-l2"><a class="reference internal" href="../helpers/xml_helper.html">XML Helper</a></li>
385</ul>
386</li>
387</ul>
388
389          
390        
391      </div>
392      &nbsp;
393    </nav>
394
395    <section data-toggle="wy-nav-shift" class="wy-nav-content-wrap">
396
397      
398      <nav class="wy-nav-top" role="navigation" aria-label="top navigation">
399        <i data-toggle="wy-nav-top" class="fa fa-bars"></i>
400        <a href="../index.html">CodeIgniter</a>
401      </nav>
402
403
404      
405      <div class="wy-nav-content">
406        <div class="rst-content">
407          <div role="navigation" aria-label="breadcrumbs navigation">
408  <ul class="wy-breadcrumbs">
409    <li><a href="../index.html">Docs</a> &raquo;</li>
410      
411        <li><a href="index.html">General Topics</a> &raquo;</li>
412      
413    <li>Profiling Your Application</li>
414    <li class="wy-breadcrumbs-aside">
415      
416    </li>
417    <div style="float:right;margin-left:5px;" id="closeMe">
418      <img title="Classic Layout" alt="classic layout" src="data:image/gif;base64,R0lGODlhFAAUAJEAAAAAADMzM////wAAACH5BAUUAAIALAAAAAAUABQAAAImlI+py+0PU5gRBRDM3DxbWoXis42X13USOLauUIqnlsaH/eY6UwAAOw==" />
419    </div>
420  </ul>
421  <hr/>
422</div>
423          <div role="main" class="document">
424            
425  <div class="section" id="profiling-your-application">
426<h1>Profiling Your Application<a class="headerlink" href="#profiling-your-application" title="Permalink to this headline"></a></h1>
427<p>The Profiler Class will display benchmark results, queries you have run,
428and <code class="docutils literal"><span class="pre">$_POST</span></code> data at the bottom of your pages. This information can be
429useful during development in order to help with debugging and
430optimization.</p>
431<div class="section" id="initializing-the-class">
432<h2>Initializing the Class<a class="headerlink" href="#initializing-the-class" title="Permalink to this headline"></a></h2>
433<div class="admonition important">
434<p class="first admonition-title">Important</p>
435<p class="last">This class does NOT need to be initialized. It is loaded
436automatically by the <a class="reference internal" href="../libraries/output.html"><span class="doc">Output Library</span></a>
437if profiling is enabled as shown below.</p>
438</div>
439</div>
440<div class="section" id="enabling-the-profiler">
441<h2>Enabling the Profiler<a class="headerlink" href="#enabling-the-profiler" title="Permalink to this headline"></a></h2>
442<p>To enable the profiler place the following line anywhere within your
443<a class="reference internal" href="controllers.html"><span class="doc">Controller</span></a> methods:</p>
444<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$this</span><span class="o">-&gt;</span><span class="na">output</span><span class="o">-&gt;</span><span class="na">enable_profiler</span><span class="p">(</span><span class="k">TRUE</span><span class="p">);</span>
445</pre></div>
446</div>
447<p>When enabled a report will be generated and inserted at the bottom of
448your pages.</p>
449<p>To disable the profiler you will use:</p>
450<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$this</span><span class="o">-&gt;</span><span class="na">output</span><span class="o">-&gt;</span><span class="na">enable_profiler</span><span class="p">(</span><span class="k">FALSE</span><span class="p">);</span>
451</pre></div>
452</div>
453</div>
454<div class="section" id="setting-benchmark-points">
455<h2>Setting Benchmark Points<a class="headerlink" href="#setting-benchmark-points" title="Permalink to this headline"></a></h2>
456<p>In order for the Profiler to compile and display your benchmark data you
457must name your mark points using specific syntax.</p>
458<p>Please read the information on setting Benchmark points in the
459<a class="reference internal" href="../libraries/benchmark.html"><span class="doc">Benchmark Library</span></a> page.</p>
460</div>
461<div class="section" id="enabling-and-disabling-profiler-sections">
462<h2>Enabling and Disabling Profiler Sections<a class="headerlink" href="#enabling-and-disabling-profiler-sections" title="Permalink to this headline"></a></h2>
463<p>Each section of Profiler data can be enabled or disabled by setting a
464corresponding config variable to TRUE or FALSE. This can be done one of
465two ways. First, you can set application wide defaults with the
466<em>application/config/profiler.php</em> config file.</p>
467<p>Example:</p>
468<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$config</span><span class="p">[</span><span class="s1">&#39;config&#39;</span><span class="p">]</span>          <span class="o">=</span> <span class="k">FALSE</span><span class="p">;</span>
469<span class="nv">$config</span><span class="p">[</span><span class="s1">&#39;queries&#39;</span><span class="p">]</span>         <span class="o">=</span> <span class="k">FALSE</span><span class="p">;</span>
470</pre></div>
471</div>
472<p>In your controllers, you can override the defaults and config file
473values by calling the <code class="docutils literal"><span class="pre">set_profiler_sections()</span></code> method of the
474<a class="reference internal" href="../libraries/output.html"><span class="doc">Output Library</span></a>:</p>
475<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$sections</span> <span class="o">=</span> <span class="k">array</span><span class="p">(</span>
476        <span class="s1">&#39;config&#39;</span>  <span class="o">=&gt;</span> <span class="k">TRUE</span><span class="p">,</span>
477        <span class="s1">&#39;queries&#39;</span> <span class="o">=&gt;</span> <span class="k">TRUE</span>
478<span class="p">);</span>
479
480<span class="nv">$this</span><span class="o">-&gt;</span><span class="na">output</span><span class="o">-&gt;</span><span class="na">set_profiler_sections</span><span class="p">(</span><span class="nv">$sections</span><span class="p">);</span>
481</pre></div>
482</div>
483<p>Available sections and the array key used to access them are described
484in the table below.</p>
485<table border="1" class="docutils">
486<colgroup>
487<col width="23%" />
488<col width="68%" />
489<col width="8%" />
490</colgroup>
491<thead valign="bottom">
492<tr class="row-odd"><th class="head">Key</th>
493<th class="head">Description</th>
494<th class="head">Default</th>
495</tr>
496</thead>
497<tbody valign="top">
498<tr class="row-even"><td><strong>benchmarks</strong></td>
499<td>Elapsed time of Benchmark points and total execution time</td>
500<td>TRUE</td>
501</tr>
502<tr class="row-odd"><td><strong>config</strong></td>
503<td>CodeIgniter Config variables</td>
504<td>TRUE</td>
505</tr>
506<tr class="row-even"><td><strong>controller_info</strong></td>
507<td>The Controller class and method requested</td>
508<td>TRUE</td>
509</tr>
510<tr class="row-odd"><td><strong>get</strong></td>
511<td>Any GET data passed in the request</td>
512<td>TRUE</td>
513</tr>
514<tr class="row-even"><td><strong>http_headers</strong></td>
515<td>The HTTP headers for the current request</td>
516<td>TRUE</td>
517</tr>
518<tr class="row-odd"><td><strong>memory_usage</strong></td>
519<td>Amount of memory consumed by the current request, in bytes</td>
520<td>TRUE</td>
521</tr>
522<tr class="row-even"><td><strong>post</strong></td>
523<td>Any POST data passed in the request</td>
524<td>TRUE</td>
525</tr>
526<tr class="row-odd"><td><strong>queries</strong></td>
527<td>Listing of all database queries executed, including execution time</td>
528<td>TRUE</td>
529</tr>
530<tr class="row-even"><td><strong>uri_string</strong></td>
531<td>The URI of the current request</td>
532<td>TRUE</td>
533</tr>
534<tr class="row-odd"><td><strong>session_data</strong></td>
535<td>Data stored in the current session</td>
536<td>TRUE</td>
537</tr>
538<tr class="row-even"><td><strong>query_toggle_count</strong></td>
539<td>The number of queries after which the query block will default to
540hidden.</td>
541<td>25</td>
542</tr>
543</tbody>
544</table>
545<div class="admonition note">
546<p class="first admonition-title">Note</p>
547<p class="last">Disabling the <a class="reference internal" href="../database/configuration.html"><span class="doc">save_queries</span></a> setting in
548your database configuration will also effectively disable profiling for
549database queries and render the ‘queries’ setting above useless. You can
550optionally override this setting with <code class="docutils literal"><span class="pre">$this-&gt;db-&gt;save_queries</span> <span class="pre">=</span> <span class="pre">TRUE;</span></code>.
551Without this setting you won’t be able to view the queries or the
552<cite>last_query &lt;database/helpers&gt;</cite>.</p>
553</div>
554</div>
555</div>
556
557
558          </div>
559          <footer>
560  
561    <div class="rst-footer-buttons" role="navigation" aria-label="footer navigation">
562      
563        <a href="cli.html" class="btn btn-neutral float-right" title="Running via the CLI">Next <span class="fa fa-arrow-circle-right"></span></a>
564      
565      
566        <a href="caching.html" class="btn btn-neutral" title="Web Page Caching"><span class="fa fa-arrow-circle-left"></span> Previous</a>
567      
568    </div>
569  
570
571  <hr/>
572
573  <div role="contentinfo">
574    <p>
575        &copy; Copyright 2014 - 2018, British Columbia Institute of Technology.
576      Last updated on Mar 22, 2018.
577    </p>
578  </div>
579
580  Built with <a href="http://sphinx-doc.org/">Sphinx</a> using a <a href="https://github.com/snide/sphinx_rtd_theme">theme</a> provided by <a href="https://readthedocs.org">Read the Docs</a>.
581  
582</footer>
583        </div>
584      </div>
585
586    </section>
587
588  </div>
589  
590
591
592  
593
594    <script type="text/javascript">
595        var DOCUMENTATION_OPTIONS = {
596            URL_ROOT:'../',
597            VERSION:'3.1.8',
598            COLLAPSE_INDEX:false,
599            FILE_SUFFIX:'.html',
600            HAS_SOURCE:  false
601        };
602    </script>
603      <script type="text/javascript" src="../_static/jquery.js"></script>
604      <script type="text/javascript" src="../_static/underscore.js"></script>
605      <script type="text/javascript" src="../_static/doctools.js"></script>
606
607  
608
609  
610  
611    <script type="text/javascript" src="../_static/js/theme.js"></script>
612  
613
614  
615  
616  <script type="text/javascript">
617      jQuery(function () {
618          SphinxRtdTheme.StickyNav.enable();
619      });
620  </script>
621   
622
623</body>
624</html>