Speed = $$$
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Why is Performance important? Applications in general Web applicaitons What can we as devs do? Tips: How to optimize Web applications, Silverlight, Backend, … Regression How to maintain performance over time How to get faster over time Discussion: What tips do you have in your toolbox?
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Speed = $$$
- 1. Speed = $$$ Peter Gfader
- 2. Abstract Why is Performance important? Applications in general Webapplicaitons What can we devs do? Tips: How to optimize Web applications Silverlight Backend … Regression How to maintain performance over time How to get faster over time Discussion: What tips do you have in your toolbox? Fill wiki
- 10. #1 Trust
- 11. #2 Money
- 14. “For Amazon every 100 ms increase in load times decreased sales with 1%” http://glinden.blogspot.com/2006/11/marissa-mayer-at-web-20.html
- 15. Google “400 ms delay caused a 0.59% decrease in search requests per user” http://velocityconf.com/velocity2009/public/schedule/detail/8523
- 16. Speed matters! Lucky day
- 17. The web
- 18. HTML • HyperText Markup Language • Describes a web page <html> <head> <title>Hello HTML</title> </head> <body> <p>Hello World!</p> </body> </html>
- 19. HTTP • Hypertext Transfer Protocol • Request – Response GET /index.html HTTP/1.1 Host: www.example.com HTTP/1.1 200 OK Date: Mon, 23 May 2005 22:38:34 GMT Server: Apache/1.3.3.7 (Unix) (Red-Hat/Linux) Last-Modified: Wed, 08 Jan 2003 23:11:55 GMT Content-Length: 438 Content-Type: text/html; charset=UTF-8
- 20. How a web page is shown Your Hosting Computer Computer The Internet Internet Client Server
- 21. Request / Response Request www.zuehlke.com The Internet Response Client HTML Serve r
- 22. XMLHttpRequest AJAX The Internet Client Serve r
- 23. Silverlight / Flash The Internet Serve Client r
- 24. “Building a webapp is easy! You just gotta know HTML, CSS, JavaScript, C#, Razor, SQL, DDL, and Regex Oh, plus people skills” https://twitter.com/#!/secretGeek/status/83297694449 287168
- 25. Can we be too fast?
- 27. Perceived Speed Mean RT is about 160 ms: auditory stimulus Mean RT is about 190 ms: visual stimulus http://en.wikipedia.org/wiki/Reaction_time
- 28. What can we do? http://www.flickr.com/photos/rockersdelight/6161622855/
- 29. You can't improve what you don’t measure
- 30. Measure
- 31. Perfmon
- 32. Perfmon Counters
- 34. PageSpeed
- 35. YSlow
- 38. LoadStorm
- 39. Tip Measure from day 1
- 40. Measure and establish a baseline
- 42. Improve
- 43. 1/7 Minify / Uglify
- 44. 2/7 Compress
- 45. 3/7 Bundle / Combine
- 46. 4/7 Image Sprites
- 47. 5/7 Server side
- 48. Server side
- 49. 6/7 Server side Caching
- 50. 7/7 CDN
- 51. Silverlight?
- 52. Measure again
- 53. Developers like to change things
- 54. Developers need to change things
- 55. Before and After
- 56. Tools
- 57. Tools • Firebug http://getfirebug.com/ • Yslow http://yslow.org/ • Pagespeed https://developers.google.com/speed/pagespeed/ • Google Analytics http://www.google.com/analytics/ • Fiddler http://www.fiddler2.com/ • Wireshark http://www.wireshark.org/ • CPorts http://www.nirsoft.net/utils/cports.html • Firebug for SL http://firstfloorsoftware.com/silverlightspy
- 58. Tools • Jetbrains dotTrace http://www.jetbrains.com/profiler/index.html • ANTS profiler http://www.red- gate.com/products/ants_performance_profiler/index.htm
- 59. Perfmon Counters • General Windows Server http://adminfoo.net/2007/04/windows-perfmon-top-ten-counters.html http://technet.microsoft.com/en-us/library/cc768048.aspx • SQL Server http://www.databasejournal.com/features/mssql/article.php/3932406/Top-10-SQL- Server-Counters-for-Monitoring-SQL-Server-Performance.htm
- 60. Tools • Web Standards Update for VS2010 http://visualstudiogallery.msdn.microsoft.com/a15c3ce9-f58f-42b7-8668-53f6cdc2cd83 • Cassette http://getcassette.net/ • Sprite and Image Optimization http://aspnet.codeplex.com/releases/view/65787 • Image Optimizer http://visualstudiogallery.msdn.microsoft.com/a56eddd3-d79b-48ac-8c8f-2db06ade77c3 • CSSCop http://visualstudiogallery.msdn.microsoft.com/a921b98e-9430-4be2-bf53-1169e12bdb50
- 61. References • 8 Performance tips before going live http://blog.gfader.com/2011/07/website-check-list-part-2-aspnet- 8.html • Performance interview with LoadStorm + more Tools http://blog.gfader.com/2010/06/performance-interview-with- loadstorm.html
- 62. References • DNR podcast on YSlow http://www.dotnetrocks.com/default.aspx?showNum=390 • Founder of YSlow (Yahoo) http://www.stevesouders.com/blog/
- 63. Q?
- 64. Yours?
- 65. Fill IKM?
- 66. Peter Gfader blog.gfader.com Thanks! Exhausted but happy!
Editor's Notes
- Wieso ist Performance wichtig?Applikation generellWeb applikationenWas können wir tun?Tips: HowtooptimizeWeb applicationsSilverlightBackend…RegressionHowtomaintainperformanceover timeHowtogetfasterover timeDiscussion: Whattips do youhave in yourtoolbox?Fill IKM wiki
- Click toaddnotesPeter Gfader talksabout web performance
- Click toaddnotesPeter Gfader talksabout web performance
- Click toaddnotesPeter Gfader talksabout web performance
- Click toaddnotesPeter Gfader talksabout web performance
- Click toaddnotesPeter Gfader talksabout web performance
- Click toaddnotesPeter Gfader talksabout web performance
- Performance = Zeitverhalten von SoftwareSpeed = Ausführungsgeschwindigkeit
- Click toaddnotesPeter Gfader talksabout web performance
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