StartProfiler.sample

<?php

/**
 * To use a profiler, copy this file to StartProfiler.php,
 * and add either:
 *  $wgProfiler['class'] = 'ProfilerStandard';
 *    or
 *  $wgProfiler['class'] = 'ProfilerXhprof';
 *
 * For output, add:
 *  $wgProfiler['output'] = array( 'text' );
 *    'text' can be one (or more) of 'text' 'udp' or 'db'
 *    'db' requires creating the profiling table, see patch-profiling.sql
 *
 * The 'text' output will be added to the output page in a comment approriate
 * to the output's mime type. For a text/html page, this display can be
 * changed to a preformatted text block by setting the 'visible' configuration
 * flag:
 *  $wgProfiler['visible'] = true;
 *
 * The 'db' output expects a database table that can be created by applying
 * maintenance/archives/patch-profiling.sql to your database.
 *
 * For a rudimentary sampling profiler:
 *   $wgProfiler['class'] = 'ProfilerStandard';
 *   $wgProfiler['output'] = array( 'db' );
 *   $wgProfiler['sampling'] = 50; // one every 50 requests
 * This will use ProfilerStub for non-sampled cases.
 *
 * For performance, the profiler is always disabled for CLI scripts
 * as they could be long running and the data would accumulate. Use
 * the --profiler parameter of maintenance scripts to override this.
 */