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**Updating to this branch requries changes to your table schema, either figure out how to migrate your data or drop, and re-create. New schema in xhprof_runs.php** This branch/clone/whatever git calls it of the official Facebook GUI does a few things: - It includes a header.php and footer.php document you can use with PHP's auto_prepend_file and auto_append_file directives. They set up profiling when requested (?_profile=1), or randomly. Profiled pages display a link to their profile results at the bottom of the page (this can be disabled on a black list bases for specific documents. e.g. pages generating XML, images, etc.). - The GUI is a bit prettier (Thanks to Graham Slater) - It uses a MySQL backend, the database schema is stored in xhprof_runs.php - There's a front end to view different runs, compare runs to the same url, etc. Key features include: - Listing 25, 50 most recent runs - Display most expensive (cpu), longest running, or highest memory usage runs for the day - It introduces the concept of "Similar" URLs. Consider: http://news.example.com/?story=23 http://news.example.com/?story=25 While the URLs are different, the PHP code execution path is likely identical, by tweaking the method in xhprof_runs.php you can help the front end be aware that these urls are identical. - Google's data visualization tool is used to graph stats over requests for an easy heads up display. Requirements: - Zlib library in PHP: http://php.net/manual/en/zlib.installation.php Used to compress serialized data - Short tags must be enabled Work that we're still doing: - The aggregation functionality is ignored completely - The code is... a mess. Deadlines do that to you, we're working on it - The default table schema isn't indexed all the places it needs to be - Easier ways to diff URLs