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diff --git a/StartProfiler.sample b/StartProfiler.sample
index b72d5d59ff..bdf21396e2 100644
--- a/StartProfiler.sample
+++ b/StartProfiler.sample
@@ -1,29 +1,38 @@
 <?php
 
 /**
- * To use a profiler, copy this file to StartProfiler.php,
- * and add either:
- *  $wgProfiler['class'] = 'ProfilerStandard';
- *    or
+ * To use a profiler, copy this file to StartProfiler.php and add:
  *  $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
+ * For output, set the 'output' key to an array of class names, one for each
+ * output type you want the profiler to generate. For example:
+ *  $wgProfiler['output'] = array( 'ProfilerOutputText' );
  *
- * 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:
+ * The output classes available to you by default are ProfilerOutputDb,
+ * ProfilerOutputDump, ProfilerOutputStats, ProfilerOutputText, and
+ * ProfilerOutputUdp.
+ *
+ * ProfilerOutputStats outputs profiling data as StatsD metrics. It expects
+ * that you have set the $wgStatsdServer configuration variable to the host (or
+ * host:port) of your statsd server.
+ *
+ * ProfilerOutputText will output profiling data in the page body as a comment.
+ * You can make the profiling data in HTML render as part of the page content
+ * by setting the 'visible' configuration flag:
  *  $wgProfiler['visible'] = true;
  *
- * The 'db' output expects a database table that can be created by applying
+ * 'ProfilerOutputDb' expects a database table that can be created by applying
  * maintenance/archives/patch-profiling.sql to your database.
  *
+ * 'ProfilerOutputDump' expects a $wgProfiler['outputDir'] telling it where to
+ * write dump files. The files produced are compatible with the XHProf gui.
  * For a rudimentary sampling profiler:
- *   if ( !mt_rand( 0, 100 ) ) {
- *       $wgProfiler['class'] = 'ProfilerStandard';
- *       $wgProfiler['output'] = array( 'db' );
- *   }
+ *   $wgProfiler['class'] = 'ProfilerXhprof';
+ *   $wgProfiler['output'] = array( 'ProfilerOutputDb' );
+ *   $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.
  */