Speeding Up The Snail
1 like1,432 views
The document discusses techniques for optimizing the performance of Drupal websites through various strategies, including server and database optimization, caching mechanisms, and hardware enhancements. Key topics include the use of APC as an opcode cache, Varnish as an HTTP accelerator, Memcached for database caching, and the importance of page caching. It highlights the significant performance improvements that can be achieved with these optimizations, along with recommended configurations and benchmarking tools.
Speeding Up The Snail
- 1. Speeding up the snail Marcus Deglos and making Drupal scale
- 2. Who is Marcus? Software engineer with Ibuildings Drupal contributor PADI scuba diving instructor
- 3. The problem with frameworks The cost of the framework: - include files - function calls - database queries
- 4. So why use Drupal? • Quicker to develop • Easier to maintain
- 5. Turbo-charging your site Optimising the stackTuning Drupal Adding hardware Benchmarks
- 6. Optimising the stack • Apache • PHP • MySQL • APC extension • Varnish
- 7. Apache • Pre-fork vs Worker mode • Number of servers / clients • Impact of .htaccess / AllowOverride • Impact of SuExec Optimising the stack
- 8. PHP • CGI vs Apache Module vc FastCGI • php.ini: – Memory limit - choose for stability – register_long_ arrays Optimising the stack
- 9. Database • Optimising the database – Monitoring with the slow query log – Add (and remove) indices based on usage – Consider table types: MYISAM vs INNODB • Optimising the service – Custom compilation – Configuring my.cnf • Consider your hardware Optimising the stack
- 10. APC • APC is an op-code cache • Install and forget? • Monitor APC use • APC tuning – APC memory usage – APC stat: checks if files are modified – APC filters Optimising the stack
- 11. Varnish • Varnish is an HTTP accelerator • Requires D7, Pressflow, or a patch to Drupal core • New mindset for personalising content - think ESI Optimising the stack
- 12. Tuning Drupal • Drupal page cache • Optimise JS / CSS • Memcached • Using the Drupal cache
- 13. Tuning Drupal • admin/settings/performance • Page caching improves performance for anonymous users • CSS and JS aggregation improves front-end performance Admin : performance settings
- 14. Tuning Drupal Memcached • Direct replacement for Drupal’s DB cache • To setup: – Install the Drupal module – Configure settings.php – Install the memcached daemon – Install the PECL extension • Minimal tuning (multiple cache ‘bins’)
- 15. Tuning Drupal Using cache_get and cache_set • Use a static cache for simple queries static $foo = null; • Use cache_get and cache_set for complex objects: – Multiple DB queries – Slow remote resources (e.g. SOAP)
- 16. Adding hardware • Separate the web server, database server and HTTP accelerator onto their own dedicated hardware • Horizontal scaling: double the hardware = double the performance? • Hunt the bottleneck • Scale with the cloud - Project Mercury
- 17. Benchmarking • ab • Jmeter • Online services
- 19. Real world performance Page cache
- 23. Real world performance Summary • Page cache: 2x - 8x • Memcache: 2.5x • APC: 1x - 2x • Varnish: 50x ?
- 24. Final thoughts • Off the shelf : Pressflow, Zend Community Server • Quick wins: – Page cache – Memcache – APC – Varnish
- 26. Image attribution - CC via Flickr • SNAIL (nutmeg66) http://www.flickr.com/photos/rachel_s/29060 95941/ • SCUBA - FISH SCHOOL (tobze) http://www.flickr.com/photos/tobze/2137899 342/ • BALL AND CHAIN (Fred Dawson) http://www.flickr.com/photos/fwp- dawson/520311773/ • SPOILER (icathing) http://www.flickr.com/photos/icathing/26603 225/ • SERVER RACK (Jamison_Judd) http://www.flickr.com/photos/jamisonjudd/24 33102356/ • GRAPH (tracer.ca) http://www.flickr.com/photos/tracer/3249533 12/ • STACK (Wonderlane) http://www.flickr.com/photos/wonderlane/23 63603984/ • TUNING (Crashmaster007) http://www.flickr.com/photos/crashmaster/33 44052447/ • ROAD END (Joseph Hatfield) http://www.flickr.com/photos/jhat/218880745 0/ • TORTOISE NAP (MaestroBen) http://www.flickr.com/photos/maestroben/36 9200383/ • CAMERA (Burnt Pixel) http://www.flickr.com/photos/keithwj/365098 384/ • QUESTIONS (Stefan Baudy) http://www.flickr.com/photos/- bast-/349497988/ • SERVER FARM (sugree) http://www.flickr.com/photos/sugree/302464 0027/ • CAT (fofurasfelinas) http://www.flickr.com/photos/fofurasfelinas/1 297744859/
- 27. Thanks for coming! Rate this talk http://joind.in/620 Download slides from slideshare @manarth