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State of Performance

State of Performance. http://stevesouders.com/docs/velocity-20090624.ppt Disclaimer: This content does not necessarily reflect the opinions of my employer. this past year. browser browser browser smush.it YSlow 2.0, Page Speed JavaScript: The Good Parts Velocity.

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State of Performance

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  1. State of Performance http://stevesouders.com/docs/velocity-20090624.ppt Disclaimer: This content does not necessarily reflect the opinions of my employer.

  2. this past year browser browser browser smush.it YSlow 2.0, Page Speed JavaScript: The Good Parts Velocity

  3. how does your web feel? http://www.flickr.com/photos/jimforest/2947582655/ http://www.flickr.com/photos/baldiri/6779355/

  4. why? web site owners don't know their web site is slow don't know what is slow don't know how to fix it don't/can't prioritize the fix

  5. my site slow? really?? easy instrumentation – Jiffy + AppEngine community opt-in – a la Alexa trends messaging visualizations – MSFast

  6. what to fix HttpWatch, Firebug Net Panel, Fiddler sample size? non-network – HTML, JS, CSS

  7. how to fix it YSlow, Page Speed, Pagetest, VRTA, neXpert, MSFast sample size? non-network – HTML, JS, CSS backend

  8. prioritizing the fix tradeoffs, ROI Bing: +1 second == -2.8% revenue Google: +400ms == -0.76% searches/user Shopzilla: faster: +7-12% revenue, -50% nodes wow versus infrastructure technical constraints

  9. BHAP single threaded browsers level of difficulty connection speeds mobile ads

  10. http://www.flickr.com/photos/steenslag/22689920/

  11. things are getting better AOL, eBay, Facebook, Google Search, Live Search, MSN, MySpace, Wikipedia, Yahoo, YouTube

  12. don't give up optimize locally think globally cache "compiled" JS multipart downloads prefetching, preferred caching WordPress, PHP, Dreamhost fast-by-default Internet infrastructure

  13. Steve Souders souders@google.com http://stevesouders.com/docs/velocity-20090624.ppt http://www.flickr.com/photos/beija-flor/275474124/

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