Replies to post #51637 on Advanced Micro Devices Inc (AMD)

[mmoy]

It will be very hard to test performance within the actual
application as it's in Firefox and this code is used in
rendering charts from stockcharts. Intel optimized a bunch
of the png (Portable Network Graphics) using MMX but skipped
a lot of the methods that are used in PNG.

I just wanted to improve performance for stockcharts as I use
their site a lot.

When I'm doing JPEG performance testing, I usually get about 30
MB of JPEGs, put the on a RamDisk, get the machine as quiet as
I can and then see how long it takes to load them using a
Javascript timer.

PNG is harder as a lot of PNG files are pretty small. It seems
that PNGs are best used when the amount of graphical information
is small relative to the size of the graphic.

There is code that operates on triplets in several other areas
of the product and I'll take a look at changing that code too.