XHProf UI

This is a graphical front end designed to store and present the profiling information provided by the Facebook created XHProf profiling tool.

Commit this code on my fork on master branch
Keep the other code on VR branch, not 3D
Now to install and run locally
Debug features
Adding traces to the folder
Opening a trace
Graphviz
Xhprof extension repo
generating sample.php
creating config.php
Add screenshots to this readme
Mention the original repo with theme
Mention SVG is interactable, fast, searchable
Mention ability to click on the graph to filter
Mention algo to show all children
Mention algo to filter out in the first place, and avoid working with lots of data TODO
Make critical path work, even after filtering out functions
Make graph colorful based on calls to functions.
Add colors to lines too
Add the ability to filter by parents too, starting with lowest point and going backwards, which makes more sense than filtering by child. Add a toggle in the UI to choose the direcgtion.
When filtering by child, show connected parents for current function
When filtering by parent, show connected children for current function. This will allow to continue clicking and moving backwards if needed.
Why these two filters result in same graph>
- http://127.0.0.1:8000/graphviz/?url=/api/db/%3Frun=5824ff778a7c8%26links=1%26show_internal=%26func=template_preprocess_page
- http://127.0.0.1:8000/graphviz/?url=/api/db/%3Frun=5824ff778a7c8%26links=1%26show_internal=%26func=menu_tree_page_data

Related Tools

It includes a header.php document you can use with PHP's auto_prepend_file directive. It sets up profiling by initilizing a few variables, and settting register_shutdown_function with the footer. Once started profiles are done 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 blacklist based for specific documents. e.g. pages generating XML, images, etc.).
For tips on including header.php on an nginx + php-fpm install take a look at: http://www.justincarmony.com/blog/2012/04/23/php-fpm-nginx-php_value-and-multiple-values/
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 frontend to view different runs, compare runs to the same url, etc.

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 frontend be aware that these urls are identical.
Highcharts is used to graph stats over requests for an easy heads up display.

Besides a simple PHP running on your favourite web server you will also need following packages:

Install your favourite mix of PHP and web server
Install MySQL server
Clone the project to some folder
Map the sub folder xhprof_html to be accessible over HTTP
Move xhprof_lib/config.sample.php to xhprof_lib/config.php
Edit xhprof_lib/config.php
Update the SQL server configuration
Update the URL of the service (should point to xhprof_html over HTTP)
Update the dot_binary configuration - otherwise no call graphs!
Update the controlIPs variable to enable access.
For a development machine you can set this to false to disable IP checks.
Import the DB schema (it is just 1 table)
See the SQL at xhprof_runs.php
Add a PHP configuration to enable the profiling
If using Apache you can edit your virtual host configuration
Add php_admin_value auto_prepend_file "/path/to/xhprof/external/header.php"
Visit http://your-server/xhprof/xhprof_html/ and be amazed!
To get profiler information showing up there visit your page with a GET variable _profile=1.
For example http://localhost/?_profile=1