drupal performance audit and optimization
TRANSCRIPT
Drupal Performance Audit and Optimization
Anoop John, CTO Vimal Joseph, Technical Architect
Drupal Performance Optimization
Drupal is not slow
Drupal is not slowThe site was just not built for the contextPoorly written backendUnoptimized front endInfrastructure not designed for traffic patterns
Drupal Performance Optimization
Aspects of Performance
Page load timePage render timeMaximum number of simultaneous users on siteMaximum number of logged in users on site
Drupal Performance Optimization
Auditing Performance
Document baseline performanceIdentify traffic patternsEvaluate website buildIdentify bottlenecks in the backendIdentify bottlenecks in the frontendEvaluate hardware platformIdentify limitations at the server levelEvaluate server application configurationIdentify sub-optimal configurations
Drupal Performance Optimization
Factors Affecting Performance
Server configuration - hardware specsServer applications - apache, database, cachingDrupal backend - how the site has been built, modules, themes, custom codeDrupal frontend - internal resources, external resources, content to be loaded / rendered, complexity of HTML, JS, CSSCaching layers - varnish, CDN, browser cache
Drupal Performance Optimization
Server Configuration
Shared? VPS? Dedicated?Processor - speed? cores? dedicated? virtual?Memory - total memory available? shared? free memory?Hard disk - speed of i/o? SSD?
Drupal Performance Optimization
Server Applications
Apache - threading model - MPM, Prefork, CGI, FCGI, maximum number of requests, number of children, connection time out, modulesNginxMySQL - query caching, indexes, tmp table, open tables, heap sizePHP - extensions
Drupal Performance Optimization
Drupal Backend
Caching - page caching, views caching, caching in custom codeMemcacheModules - number? unused? admin? Custom code - reviewed?SQL queries - slow queries? query log?SQL inserts - too many? logging?Disk writes - too many?Synchronous requests?
Drupal Performance Optimization
Drupal Frontend
Loading timeRendering timeComplexity of HTMLComplexity and size of CSSComplexity and size of JSNumber and size of static resourcesNumber of external resourcesSynchronous external resources
Drupal Performance Optimization
Caching Layers
Browser cache - enabled? expiry?Static caching - varnish? boost?Static resource caching - CDN? subdomains?
Drupal Performance Optimization
Optimizing Performance
Quantify bottlenecks - impact? cost? time?Classify bottlenecks - critical, high, normal, lowGroup solutions Iterate over groups - implement and testDocument resultsMonitor and re-evaluate
Drupal Performance Optimization
Testing Performance
New Relic monitoringApache ab testingApache JMeter load testing
Drupal Performance Optimization
Performance Tools
DevelMySQL query logsEXPLAINdpm, watchdogProfiling and tracing using xdebughttp://webpagetest.org/Yahoo YSlow, Google Page SpeedFirebug
Drupal Performance Optimization
Common Performance Mistakes
Too many modulesDisabled cachingCache clearsDebug logs and database loggingViews cachingPage not foundsUnnecessary sessionsPHP errors
Zyxware Technologies and Drupal
Zyxware is a leading contributor to Drupal from India and is one of only
six Featured Service Providers from India listed on drupal.org
● Over 40,000 websites use our modules and themes
● More than 30 contributed modules and themes
● Maintainer of Search404, a top 100 Drupal module
● Over 1000 commits at drupal.org
● Contributes all patches back to Drupal
● Our profile on drupal.org - http://drupal.org/user/222163
● Knowledge partnerships with Acquia, New Relic and Volacci
● Freedom Walk, a 44 day walk by a team of
Free Software Evangelists across the length of
Kerala to promote Free Software
● Building RithuOS, an Operating System for Engineering
students with Free Software Engineering applications
● GNU/Linux Install Fests in Schools, Colleges and at Technopark.
● Local language (Malayalam) computing camps in colleges
● Building and Maintenance of Freedom Toaster, a Free Software
kiosk
● Conducting Free Software workshops and
lectures in colleges in Kerala
Free Software and Zyxware Technologies
• Check us out at http://www.zyxware.com
• Mail us at [email protected]
• Like us at http://www.facebook.com/zyxware
• Follow us at http://www.twitter.com/zyxware
• Connect with us at
http://www.linkedin.com/companies/zyxware-technologies
• Talk to us at +91-9495969446 between 9AM - 9PM IST
• Skype me at aj_zyxware
Contact Us
Drupal Performance Optimization
Thank you