--- a/emacs.rst	Sun Jan 16 23:04:10 2011 +0200
+++ b/emacs.rst	Wed Jan 19 00:50:45 2011 +0200
@@ -94,6 +94,17 @@
 
   (setq byte-compile-generate-call-tree t)
 
+* Emacs profiling.
+
+** benchmark.el.
+
+  (benchmark-run 1 (revert-buffer))
+
+** elp.el.
+
+Enter a prefix for 'M-x elp-instrument-package', perform action and see result
+by 'M-x elp-results'.
+
 * WWW.
 
 ** Text based WWW browser.