Bug#583653: xserver-xorg-video-radeon: 15x-slower performance regression in KMS mode for 2D operations

[Sylvain Beucler <beuc@beuc.net>]

Somebody suggested I run gtkperf.
Results are much closer.


UMS:

GtkPerf 0.40 - Starting testing: Sat May 29 14:44:42 2010

GtkEntry - time:  0,17
GtkComboBox - time:  1,71
GtkComboBoxEntry - time:  1,20
GtkSpinButton - time:  0,28
GtkProgressBar - time:  0,17
GtkToggleButton - time:  0,37
GtkCheckButton - time:  0,24
GtkRadioButton - time:  0,44
GtkTextView - Add text - time:  0,78
GtkTextView - Scroll - time:  0,46
GtkDrawingArea - Lines - time:  2,34
GtkDrawingArea - Circles - time:  2,09
GtkDrawingArea - Text - time:  1,95
GtkDrawingArea - Pixbufs - time:  0,26
 --- 
Total time: 12,47


KMS:

GtkPerf 0.40 - Starting testing: Sat May 29 15:03:03 2010

GtkEntry - time:  0,19
GtkComboBox - time:  1,79
GtkComboBoxEntry - time:  1,20
GtkSpinButton - time:  0,30
GtkProgressBar - time:  0,19
GtkToggleButton - time:  0,38
GtkCheckButton - time:  0,26
GtkRadioButton - time:  0,48
GtkTextView - Add text - time:  0,81
GtkTextView - Scroll - time:  0,47
GtkDrawingArea - Lines - time:  2,62
GtkDrawingArea - Circles - time:  3,21
GtkDrawingArea - Text - time:  2,51
GtkDrawingArea - Pixbufs - time:  0,44
 --- 
Total time: 14,86