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Debugging and Profiling Symfony Apps

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Alvaro Videla
Alvaro Videla

The document discusses various tools for debugging, profiling, and monitoring symfony applications including loggers, timers, XHProf for profiling, Tsung for benchmarking, and Graphite for live metrics. It provides examples of using these tools and outlines a roadmap for improving metric recording through a C PHP extension.

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Debugging and Profiling symfony applications by Alvaro Videla Wednesday, February 17, 2010
About Me • Lead Developer at TheNetCircle.com • Creator of FireSymfony • Twitter: @old_sound • Blog: http://obvioushints.blogspot.com/ Wednesday, February 17, 2010
About Me • Lead Developer at TheNetCircle.com • Creator of FireSymfony - 16.000 downloads • Twitter: @old_sound • Blog: http://obvioushints.blogspot.com/ Wednesday, February 17, 2010
About our symfony site • 2.000.000+ members • 250.000+ logins/day • 300.000+ private messages/day • 14.000 req/min in the top 6 actions Wednesday, February 17, 2010
Let’s talk about: • Debugging Tools • Profiling Tools • Benchmarking Tools • Live Site Metrics Wednesday, February 17, 2010
Symfony Tools Wednesday, February 17, 2010
Loggers Wednesday, February 17, 2010
sfFileLogger • logs per controller & environment • very useful for development • Prod, disable or set level: err Wednesday, February 17, 2010
There’s a lot of information on the logs • Cache hits • Cache misses • Number of Database Queries Wednesday, February 17, 2010
AWK • Extract information using AWK • use: /(M|m)atch route/ http://gist.github.com/271034 Wednesday, February 17, 2010
Problems of this approach • Hard to use with several servers • Require to ssh and inspect logs in each of the servers • Hard to visualize data in context Wednesday, February 17, 2010
Next Step A Centralized Logger Wednesday, February 17, 2010
Sample Use Case • CouchDB backend • One Server collecting logs from 28 PHP machines • 15 million logs in the first week Wednesday, February 17, 2010
A Centralized Logger Wednesday, February 17, 2010
5 minute How To A Redis Logger http://github.com/videlalvaro/avRedisLoggerPlugin Wednesday, February 17, 2010
Logger Roadmap Wednesday, February 17, 2010
Timers Wednesday, February 17, 2010
sfTimer • Easy to use • Integrated with symfony debug tools Wednesday, February 17, 2010
Using Timers Wednesday, February 17, 2010
Problems of this approach • Require to modify the code to add timers • Only provides execution time information • Best suited to run in dev mode Wednesday, February 17, 2010
Next Step Profile with XHProf Wednesday, February 17, 2010
XHProf • C extension for PHP • Open sourced by Facebook • Hierarchical Profiler • Extracts: - Walltime - Memory Usage Wednesday, February 17, 2010
XHProf Web Interface • Single Runs • Compare Runs • Aggregate Runs • Sort runs by: - Number Function Calls - Memory Usage - Walltime Wednesday, February 17, 2010
5 minute How To Adding XHProf to an index.php http://gist.github.com/300261 Wednesday, February 17, 2010
symfony 1.0 vs. symfony 1.2* *sfCompat10Plugin enabled Wednesday, February 17, 2010
@old_sound: “Hello World!” Benchmarks Considered Evil! #sflive2010 1 second ago from Cité Universitaire Internationale Wednesday, February 17, 2010
symfony 1.0 vs. symfony 1.2* *sfCompat10Plugin enabled Wednesday, February 17, 2010
symfony 1.0 vs. symfony 1.2* *sfCompat10Plugin enabled Wednesday, February 17, 2010
Tsung • High performance benchmarking framework • Open Source • Distributed benchmarking • Can simulate user sessions • Records and replay browser interaction • Can benchmark HTTP, MySQL, Ejabberd • Can be extended Wednesday, February 17, 2010
Tsung Sessions • Arrival Phase • Duration • Amount of Users • Meassure system load Wednesday, February 17, 2010
Tsung Wednesday, February 17, 2010
Metrics Wednesday, February 17, 2010
Metrics Live Site Metrics With Graphite Wednesday, February 17, 2010
Graphite • “... a highly scalable real-time graphing system” • Open Source • Text Protocol • Awesome Graphics Capabilities http://graphite.wikidot.com/ Wednesday, February 17, 2010
Graphite in Action Wednesday, February 17, 2010
We use it for • System Load Comparisons • APC Stats • Memcache Stats • Number of Online Users • AVG module/action request time • AVG module/action memory usage • module/action request count Wednesday, February 17, 2010
symfony 1.0 vs. symfony 1.2* *sfCompat10Plugin enabled Wednesday, February 17, 2010
symfony 1.0 vs. symfony 1.2* *sfCompat10Plugin enabled Wednesday, February 17, 2010
5 minute How To Adding Graphite to an index.php http://gist.github.com/300265 Wednesday, February 17, 2010
Roadmap • Write C PHP Extension • Take advantage of Request Life Cycle • Ease metric recording Wednesday, February 17, 2010
Links • http://www.rabbitmq.com/ • http://tsung.erlang-projects.org/ • http://graphite.wikidot.com/ • http://pecl.php.net/package/xhprof Wednesday, February 17, 2010
Questions? Wednesday, February 17, 2010
Thanks! Alvaro Videla http://twitter.com/old_sound Wednesday, February 17, 2010

More Related Content

Debugging and Profiling Symfony Apps

  • 1. Debugging and Profiling symfony applications by Alvaro Videla Wednesday, February 17, 2010
  • 2. About Me • Lead Developer at TheNetCircle.com • Creator of FireSymfony • Twitter: @old_sound • Blog: http://obvioushints.blogspot.com/ Wednesday, February 17, 2010
  • 3. About Me • Lead Developer at TheNetCircle.com • Creator of FireSymfony - 16.000 downloads • Twitter: @old_sound • Blog: http://obvioushints.blogspot.com/ Wednesday, February 17, 2010
  • 4. About our symfony site • 2.000.000+ members • 250.000+ logins/day • 300.000+ private messages/day • 14.000 req/min in the top 6 actions Wednesday, February 17, 2010
  • 5. Let’s talk about: • Debugging Tools • Profiling Tools • Benchmarking Tools • Live Site Metrics Wednesday, February 17, 2010
  • 8. sfFileLogger • logs per controller & environment • very useful for development • Prod, disable or set level: err Wednesday, February 17, 2010
  • 9. There’s a lot of information on the logs • Cache hits • Cache misses • Number of Database Queries Wednesday, February 17, 2010
  • 10. AWK • Extract information using AWK • use: /(M|m)atch route/ http://gist.github.com/271034 Wednesday, February 17, 2010
  • 11. Problems of this approach • Hard to use with several servers • Require to ssh and inspect logs in each of the servers • Hard to visualize data in context Wednesday, February 17, 2010
  • 12. Next Step A Centralized Logger Wednesday, February 17, 2010
  • 13. Sample Use Case • CouchDB backend • One Server collecting logs from 28 PHP machines • 15 million logs in the first week Wednesday, February 17, 2010
  • 14. A Centralized Logger Wednesday, February 17, 2010
  • 15. 5 minute How To A Redis Logger http://github.com/videlalvaro/avRedisLoggerPlugin Wednesday, February 17, 2010
  • 18. sfTimer • Easy to use • Integrated with symfony debug tools Wednesday, February 17, 2010
  • 20. Problems of this approach • Require to modify the code to add timers • Only provides execution time information • Best suited to run in dev mode Wednesday, February 17, 2010
  • 21. Next Step Profile with XHProf Wednesday, February 17, 2010
  • 22. XHProf • C extension for PHP • Open sourced by Facebook • Hierarchical Profiler • Extracts: - Walltime - Memory Usage Wednesday, February 17, 2010
  • 23. XHProf Web Interface • Single Runs • Compare Runs • Aggregate Runs • Sort runs by: - Number Function Calls - Memory Usage - Walltime Wednesday, February 17, 2010
  • 24. 5 minute How To Adding XHProf to an index.php http://gist.github.com/300261 Wednesday, February 17, 2010
  • 25. symfony 1.0 vs. symfony 1.2* *sfCompat10Plugin enabled Wednesday, February 17, 2010
  • 26. @old_sound: “Hello World!” Benchmarks Considered Evil! #sflive2010 1 second ago from Cité Universitaire Internationale Wednesday, February 17, 2010
  • 27. symfony 1.0 vs. symfony 1.2* *sfCompat10Plugin enabled Wednesday, February 17, 2010
  • 28. symfony 1.0 vs. symfony 1.2* *sfCompat10Plugin enabled Wednesday, February 17, 2010
  • 29. Tsung • High performance benchmarking framework • Open Source • Distributed benchmarking • Can simulate user sessions • Records and replay browser interaction • Can benchmark HTTP, MySQL, Ejabberd • Can be extended Wednesday, February 17, 2010
  • 30. Tsung Sessions • Arrival Phase • Duration • Amount of Users • Meassure system load Wednesday, February 17, 2010
  • 33. Metrics Live Site Metrics With Graphite Wednesday, February 17, 2010
  • 34. Graphite • “... a highly scalable real-time graphing system” • Open Source • Text Protocol • Awesome Graphics Capabilities http://graphite.wikidot.com/ Wednesday, February 17, 2010
  • 35. Graphite in Action Wednesday, February 17, 2010
  • 36. We use it for • System Load Comparisons • APC Stats • Memcache Stats • Number of Online Users • AVG module/action request time • AVG module/action memory usage • module/action request count Wednesday, February 17, 2010
  • 37. symfony 1.0 vs. symfony 1.2* *sfCompat10Plugin enabled Wednesday, February 17, 2010
  • 38. symfony 1.0 vs. symfony 1.2* *sfCompat10Plugin enabled Wednesday, February 17, 2010
  • 39. 5 minute How To Adding Graphite to an index.php http://gist.github.com/300265 Wednesday, February 17, 2010
  • 40. Roadmap • Write C PHP Extension • Take advantage of Request Life Cycle • Ease metric recording Wednesday, February 17, 2010
  • 41. Links • http://www.rabbitmq.com/ • http://tsung.erlang-projects.org/ • http://graphite.wikidot.com/ • http://pecl.php.net/package/xhprof Wednesday, February 17, 2010
  • 43. Thanks! Alvaro Videla http://twitter.com/old_sound Wednesday, February 17, 2010