Xorg 1.5rc6 radeon high cpu usage

Question

Hi to all.
I tried to install the new Xorg with radeon driver, because it doesn't work with catalyst/fglrx, but my system become really slow.
Xorg uses a lot of cpu when I move a windows or just start an app.
With XAA it's a little better than EXA, with vesa and with radeon git it's the same so probably isn't a driver related problem.
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
2612 root 20 0 603m 16m 3876 R 79.2 6.5 5:16.75 X
Gtkperf is really slow too
GtkEntry - time: 0,34
GtkComboBox - time: 10,82
GtkComboBoxEntry - time: 9,19
GtkSpinButton - time: 1,44
GtkProgressBar - time: 0,67
GtkToggleButton - time: 5,64
GtkCheckButton - time: 3,98
GtkRadioButton - time: 4,28
GtkTextView - Add text - time: 3,02
GtkTextView - Scroll - time: 3,60
GtkDrawingArea - Lines - time: 2,48
GtkDrawingArea - Circles - time: 1,99
GtkDrawingArea - Text - time: 13,95
GtkDrawingArea - Pixbufs - time: 0,58
Total time: 61,98
my xorg.conf:http://pastebin.com/m9e6f949

Answer 1

Zap: You may want to try removing a lot of the code/options from your xorg.conf. The new radeon driver does a really good job of setting itself up without the need for explicitly adding options. There may be a few options you must define, but those are things like a modeline ***if and only if your monitor does not report the correct edid information***
I have been using the new xserver, mesa, drm, ati-driver, since may (on ubuntu before), when r500 3d support was added.
I have an x1650 (rv535 chip).
I did the upgrade to mesa release when it hit testing. At that time I also installed the xserver&ati driver that are in testing (even though they are the same as what I was running before.
There were a few changes, for instance, I had to explicitly define the migration heuristic option, whereas it *seems* was loaded automatically before.
Here's my xorg.conf:
Section "ServerLayout"
Identifier "X.org Configured"
Screen 0 "Screen0" 0 0
InputDevice "Mouse0"
InputDevice "Keyboard0"
EndSection
Section "InputDevice"
Identifier "Keyboard0"
Driver "kbd"
EndSection
Section "InputDevice"
Identifier "Mouse0"
Driver "mouse"
EndSection
Section "Monitor"
Identifier "Monitor0"
VendorName "Samsung"
ModelName "SyncMaster 712N"
EndSection
Section "Device"
Driver "radeon"
VendorName "ATI Technologies Inc"
Identifier "Card0"
Option "AccelMethod" "EXA"
Option "AGPMode" "8"
# fix slow web browsers
Option "MigrationHeuristic" "greedy"
# exadownloadfromscreen
Option "AccelDFS" "1"
BusID "PCI:1:0:0"
EndSection
Section "Screen"
Identifier "Screen0"
Device "Card0"
Monitor "Monitor0"
SubSection "Display"
Viewport 0 0
Depth 24
EndSubSection
EndSection
Section "DRI"
Group "video"
Mode 0660
EndSection
Last edited by Execute_Method (2008-09-06 17:13:41)