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© 2011 Cognifide Limited. In commercial confidence only. Client-side performance testing Jacek Maciejewski QA Engineer
© 2011 Cognifide Limited. In commercial confidence only. What is client-performance? Tools Continuous testing Agenda
© 2011 Cognifide Limited. In commercial confidence only. Client-side performance
© 2011 Cognifide Limited. In commercial confidence only. Why is it important? influences how a user see a page / brand 25% of people abandon the page if it does not load within 4 seconds every extra secont of loading equals 7% less conversion rate Amazon would lose 1.6 billion$ per year if their website loads 1 second longer Google would get 8 mln requests less every day if it was slower by 0.4 second. Making Barack Obama’s website 60% faster increased donation conversions 14% Google’s page rank is partially determined based on performance
© 2011 Cognifide Limited. In commercial confidence only. Tools
© 2011 Cognifide Limited. In commercial confidence only. Tools Firebug / Developer Tools Google Page Speed Yslow Gtmetrix.com (YSlow and PS together) Google Speed Tracer ajaxDynaTrace WebPageTest.org https://developers.google.com/speed/
© 2011 Cognifide Limited. In commercial confidence only. Tools – browser timings window.performance.timing W3C standard supported in every modern browser
© 2011 Cognifide Limited. In commercial confidence only.
How to automate?
© 2011 Cognifide Limited. In commercial confidence only. Automation Browser Timings are easy to use with Selenium WebDriver HAR Logs −From Firebug (Net panel + NetExport plugin) −From BrowserMob (proxy) −https://code.google.com/p/harstorage/ possible to integrate Google PS with automation frameworks WebPageTest – API performance logs from the newest Chrome Driver (https://gist.github.com/klepikov/5457750)
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