Bug 51107 – Poor performance with XML/XSLT on webkit browsers

• Component: XML
• Status: UNCONFIRMED

[malch]

Created attachment 76644 [details]
Sample XSL file to demonstrate the problem

I have recently been involved in the development of an XML/XSLT application. Unfortunately, we have found that performance is poor on webkit based browsers.

We were able to create a simple XSL that demonstrates the problem:

http://www.malch.com/xml/test.xsl

Together with some XML data to feed it:

http://www.malch.com/xml/test.xml

Here are some approx CPU times required to complete the transform 10 times on various browsers:

Chromium (latest dev version): 29 secs
Safari 5.0.3: 33 secs
Firefox 4 Beta 7: 18 secs
I.E. 9 Beta: 9 secs

All timings on the same system running Win 7 x64.

Overall, the webkit based browser performance is quite sluggish compared to Firefox and IE 9 which is a shame :-(

Any improvement would be most welcome.

[Miles Elam]

I have also come across this.  I created a test on jsperf comparing XSLT translation performance to handlebars.js template replacement as well as XSLT performance relative to other browsers.

http://jsperf.com/js-vs-xslt/4

Feel free to hit that URL yourself with different browsers.  The difference in XSLT performance is startling.  Even IE6 beats Chrome.  Firefox is over 6x faster.  Please change the status away from UNCONFIRMED.