radeon EXA performance questions

[Ross Vandegrift]

Hi everyone,

I converted my workstation at the office to use EXA instead of XAA
on a Radeon RV380.  Many operations are clearly faster, and everything
seems quite stable.  I'm not using any compositing manager, just E17
for normal 2D desktop work.  No need for 3D, though it looks like Xorg
enables AIGLX without a problem.

I've come across some things that are enormously slower than XAA.
 For example, inserting a line into the middle of an emacs buffer or
pressing the down arrow on a webpage.  Scrolling by large amount is
fast.  Dragging a window shows the same effects.  It seems to be
moving a rectangle around the screen that's slow.

Here's the device options I've enabled, and it's helped performance
somewhat:
        Driver          "radeon"
        Option          "AccelMethod"           "EXA"
        Option          "AccelDFS"              "1"
        Option          "EnablePageFlip"        "1"
        Option          "ColorTiling"           "1"
        Option          "FBTexPercent"          "0"
        Option          "MigrationHeuristic"    "greedy"

Any other tips?


-- 
Ross Vandegrift
ross at kallisti.us

"The good Christian should beware of mathematicians, and all those who
make empty prophecies. The danger already exists that the mathematicians
have made a covenant with the devil to darken the spirit and to confine
man in the bonds of Hell."
	--St. Augustine, De Genesi ad Litteram, Book II, xviii, 37