dri + ATI: dramatic performance slowdown

[Robert Noland]

On Tue, 2009-04-21 at 10:26 +0200, Ronald Klop wrote:
> On Mon, 20 Apr 2009 15:26:20 +0200, Oliver Lehmann <lehmann at ans-netz.de>  
> wrote:
> 
> > Hi,
> >
> > as I found out in the meantime - the following described problem can be
> > only worked around when 'Load   "dri"' is removed from the server
> > section, and 'Option     "DRI"   "true"' is removed from the Device
> > section. Otherwise:
> >
> > I've synced my pre-drm-changes 7-STABLE to the latest 7-STABLE. Now the
> > grafic performance in xorg decreased dramatically. Moving a window or
> > resizing a window makes me feel sent back 15 years ago ;). I can "see"  
> > the
> > window resizing. The popup of an window is fast, but moving it around or
> > scrolling... jesus that is what I call slow. Firefox is nearly not usable
> > for example :(
> >
> > I wonder what is causing this. I'm using a ATI Radeon HD3850 in it's AGP
> > version (probably kinda uncommon).
> >
> > olivleh1 at kartoffel olivleh1> dmesg | grep drm
> > drm0: <ATI Radeon HD3850> on vgapci0
> > vgapci0: child drm0 requested pci_enable_busmaster
> > info: [drm] AGP at 0xd8000000 128MB
> > info: [drm] Initialized radeon 1.29.0 20080528
> > info: [drm] Setting GART location based on new memory map
> > info: [drm] Loading RV670 CP Microcode
> > info: [drm] Loading RV670 PFP Microcode
> > info: [drm] Resetting GPU
> > info: [drm] writeback test succeeded in 1 usecs
> > drm0: [ITHREAD]
> > olivleh1 at kartoffel olivleh1> pkg_info | grep radeon
> > xf86-video-radeonhd-1.2.5 X.Org ati RadeonHD display driver
> > olivleh1 at kartoffel olivleh1>
> >
> >> From my xorg.conf:
> >
> > Section "Module"
> >     Load        "dbe"
> >     Load        "freetype"
> >     Load        "glx"
> >     Load        "dri"
> > EndSection
> > Section "Device"
> >
> >     Identifier	"ATI1"
> >     BoardName	"ATI Radeon"
> >     Driver      "radeonhd"
> >     BusID	"PCI:1:0:0"
> >     Option      "Monitor-DVI-I_1/digital"  "Syncmaster DVI1"
> >     Option      "Monitor-DVI-I_2/digital"  "Syncmaster DVI2"
> >     Option	"DRI"	"true"
> > EndSection
> >
> > the whole xorg.conf can be found here:
> >
> > http://cvs.olli.homeip.net/index.html/configs/xorg.conf?rev=1.9
> >
> > Is this expected to happen with DRI enabled?
> >
> 
> Hi,
> 
> X.org is quite good in autodetecting your hardware and running without a  
> config. It works for me out-of-the-box with my Radeon HD 2400 XT and  
> Radeon HD 2600 XT. (But I'm not using agp.)
> You can also try the xf86-video-ati driver. It works very well with 2d  
> accell. (I'm using it also.)

If you don't have a config, you won't get drm as it defaults to off on
r6/7xx hardware right now.

robert.

> Ronald.
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-- 
Robert Noland <rnoland at FreeBSD.org>
FreeBSD
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