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Informations about the package phpprofiler

PhpProfiler -- Profiling Neos Flow Applications

-- Measuring the flow of your application --

PhpProfiler is a profiling and tracing tool that measures time spent in various parts of your application flow and can leverage XHProf to profile applications.

It stores data in a format understood by Plumber and can also store to the databases used by XHProf.io (http://xhprof.io/) and XHGui (https://github.com/preinheimer/xhgui).

Installation

To install, just use composer:

The system will automatically install PhpProfiler and use XHProf if it is installed.

Configuration

This is the default configuration:

To enable the XHProf.io and XHGui backends adjust the configuration as needed, but keep in mind that any needed setup (e.g. databasae creation) needs to be done as described in the respective documentation.

Limiting Profiling Run Probability

Using the environment variable PHPPROFILER_SAMPLINGRATE the probability of runs being profiled can be changed. If the variable is not set, every run will be profiled. If a float between 0 and 1 is given, that represents a probability between 0% and 100% for every run to trigger profiling.

If limiting the probability to a low enough value, it is feasible to leave PhpProfiler running on production instances.

Profiling Custom Code

PhpProfiler collects regular XHProf data and some data specific to TYPO3 Flow, Neos and CMS.

To collect profiling information on critical parts of a custom application, various options exist.

Profiling method calls using an Aspect (NEW!)

You can use the Sandstorm\PhpProfiler\Annotations\Profile annotation on a method in order to profile it:

Adding custom timers

When hunting for performance bottlenecks, it often makes sense to add custom timers throughout your application. Doing so is quite easy, as the following example demonstrates:

If the timer name contains a colon (:), related timers are grouped together in the User Interface:

It's not a problem if multiple timers are active at the same time; even the same timer can be active multiple times at the same time. The following example is perfectly valid:

Furthermore, the startTimer allows a second array argument containing additional information which is shown in the UI.

Setting Options

Furthermore, you can set meta-information on the current run (which is called options currently):

Viewing the results

For the Plumber UI install the Plumber package as described in it's manual.

For XHProf.ui and XHGui follow the instructions given on the project websites.

Credits

Originally developed by Sebastian Kurfürst, Sandstorm Media UG (haftungsbeschränkt)

Code from the XHProf.io and XHGui projects is included for storing the data.

License

All the code is licensed under the GPL license.

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