This plugin lists the top 100 slowest actions and filters during a page request in WordPress. It helps you figure out performance bottlenecks in themes and plugins.

Requires Debug Bar.

Current limitations:

• Does not time nested actions and filters due to a core bug
• Does not time actions and filters before plugins_loaded or muplugins_loaded if placed in mu-plugins
• Does not time actions and callbacks after wp_footer at priority 1000

0.8.4

• Fix typo in count() usage, props @josephscott

0.8.3

• Fix undefined variable notice

0.8.2

• Fix a couple warnings/notices

0.8.1

• Add support for closure/anonymous functions
• Show all callbacks hooked to each priority
• Fix minor styles

0.8

• Code cleanup
• Use wp_footer for output instead of output buffering
• Show callbacks hooked to each action

0.7

• First version

Screenshot