xdebug Profiler

Short overview of xdebug profiler usage supported by qcachegrind

Transcript

1. xdebug Profiler
2. xdebug Profiler • What is this and what is it good for? • Installation • Configuration • xdebug Profiler plugin • Analysers • Qcachegrind • Demo
3. xdebug Profiler
 What is this? • Build in extension of debug • Helps finding performance leaks • Helps inspecting code execution
4. xdebug Profiler
 What is this? • Three major functions • Monitor execution time of each and all methods called during one request • Visualise most consuming execution 
 (Callee Map) • Visualise call history
 (Call Graph)
5. Installation • Part of xdebug (http://xdebug.org/) • Multiple ways to install • Precompiled package for windows, PEAR/PECL, source
6. Configuration • Configuration within php.ini or php.d/xdebug.ini or any other php.d/* script
7. Configuration 
 remote profiling • Enable remote profiling 
 debug.profiler_enable_trigger=1 • requires remote enabler • Recommend to use browser plugin xdebug enabler
8. Configuration
 cachegrind.out • Params for additional verbosity 
 cachegrind.out.%R-%s-%t • R $_SERVER[‘REQUEST_URI'] • s script name • t timestamp (seconds) • see http://xdebug.org/docs/ all_settings#trace_output_name for compete list
9. xdebug Profiler plugin • Easy to enable your profiling on demand
10. Analysers • Platform/OS related analysers ported from kcachegrind • wincachegrind • kcachegrind • qcachegrind • Further analysers • phpstrom (embedded plugin) • etc.
11. Analysers
 qcachegrind
12. Analysers
 qcachegrind • What should I take a closer look at? • Time • Callee Map • Call Graph
13. Analysers
 qcachegrind • Demo