Kommentare zu: Web Performance Best Practices: How masters.com re-designed their site to boost performance – and what that re-design missed

Von: Andreas Grabner

Andreas Grabner — Sat, 09 Apr 2011 19:00:02 +0000

you are correct – just ran into the same problem. seems like an endless loop is responsible for this – check out my blog about how to analyse and fix it

Von: Lauri Uusitalo

Lauri Uusitalo — Sat, 09 Apr 2011 16:56:07 +0000

Thanks for looking into it. On Windows and Mac, with FF and Safari, Javascript getting very busy. Both systems keep asking if script needs to be stopped. And this is not just me.

Script: http://www.masters.com/mas/js/jquery.js:16

This happens when looking at the leaderboard.

Von: Andreas Grabner

Andreas Grabner — Fri, 08 Apr 2011 10:12:19 +0000

Hi Lauri
Just took a quick look at it. Seems they make heavy use of Flash this year showing many videos -that might explain your 100% CPU.
On the other side it seems they have done a good job in keeping page load times down. The only thing they dont do well is us Domain Sharding for the player images.

Von: Lauri Uusitalo

Lauri Uusitalo — Thu, 07 Apr 2011 14:37:27 +0000

Can you analyze the masters.com this year 2011? CPU at 100%, not very good.

Von: Kerry Kobashi

Kerry Kobashi — Fri, 09 Apr 2010 09:50:09 +0000

The Master’s site is lovely. Really very cool.
Its a pure Flash/HTML/Javascript site.

When Javascript is off and you go into the site with IE, Opera, Firefox, Safari nothing renders right. They inform the user if Flash 10 isn’t installed, but don’t if Javascript is off.

Von: Andreas Grabner

Andreas Grabner — Tue, 06 Apr 2010 17:22:31 +0000

Thats 100% correct

Von: cancel bubble

cancel bubble — Tue, 06 Apr 2010 17:05:19 +0000

If I understand correctly, $(‘div.middle703′) would be better than $(‘.middle703), though not as good as $(‘#middle703′), is this correct?

If you have to use a class name, add the tag name to the selector?

Von: Andreas Grabner

Andreas Grabner — Tue, 06 Apr 2010 06:09:44 +0000

@cancel bubble: Nice to hear that you like these posts. Unfortunately the problem with the class name selectors apply to ALL current versions of IE (including IE8). It seems that MS had plans to implement it natively in IE8 but it didnt make it into the final version. Lets hope for IE9
Let me know if there are any other topics you are interested in and I try to pick it up for future posts

Von: cancel bubble

cancel bubble — Tue, 06 Apr 2010 00:01:11 +0000

Your blog posts are consistently some of the best I’ve ever read, LOVE these real world performance dissections.

Question, which versions of IE does this apply to:

“those selectors by class name, e.g.: “.middle703″, .”middle346″, … are very expensive as Internet Explorer doesn’t provide a native implementation to query elements by class name”