Bug 473115

Created attachment 324751 [details]
Xorg.0.log when not using xorg.conf

Created attachment 324752 [details]
Xorg.0.log when using xorg.conf

Created attachment 324753 [details]
xorg.conf using XAA

Created attachment 324754 [details]
dmesg output

Smolt Profile: http://www.smolts.org/client/show/pub_52d7367e-80d0-479c-bb50-e5218741cf0c

The same issue (terrible slowdown of all compiz-generated window effects) when migrating from F9 to F10 on Toshiba A200 Satellite notebook (Dual Core 1.85GHz CPU, Intel I945 graphics chipset). While on F9 all compiz effects worked fine (however, with Indirect Rendering, and without the bilinear filtering), then on F10 they are incredibly slow. The same problem appears in both KDE and GNOME.

Upgrading compiz along with all F10 packages via PackageKit (System Upgrades, run on Nov 30th) didn't help a bit.

I also noticed that the slowdown is proportional to the area of the display to be affected by the effect, eg. a small window is not as clumsy to be moved or minimized as a big one. Rotating the desktop cube almost freezes the display for 10 seconds or so.

I have the same terrible performance on dell inspiron 9200. Using mobility radeon 9600 (rv3500). Fedora 9 is fine. 
Changing "AccelMethod" "XAA" returned a blank screen. EXA is equally unusable.

Is it related to modesetting ?


http://forums.fedoraforum.org/showthread.php?t=205691&highlight=fedora+radeon

The problem is _probably_ related to the ground work changes made to the radeon driver, but this chipset doesn't have kernel modesetting support yet. Nonetheless I have tried appending nomodeset to the kernel boot parameters and it doesn't seem to make a difference.

I recently upgraded to:
Name       : xorg-x11-drv-ati
Arch       : i386
Version    : 6.9.0
Release    : 61.fc10

EXA seems better, but is still much slower than XAA. In either case it is still unuseable with Compiz.

upgraded to:
Name       : xorg-x11-drv-ati
Arch       : i386
Version    : 6.9.0
Release    : 63.fc10

2D performance is much better - not as much tearing and stuttering when moving windows around using metacity. It's great to see regression fixes are coming along!
Redrawing after changing workspaces is slower than XAA still, though, and Compiz is unusable. Also, Xorg with EXA seems to use more CPU time than with XAA.

On Fedora 10 using a default installation on a Compaq Presario X1000 with video card "PCI:*(0@1:0:0) ATI Technologies Inc Radeon RV250 [Mobility FireGL 9000] rev 1," the 2D performance in X11 is observed to be markedly slower than in Fedora 9.  No xorg.conf was used, as well as an xorg.conf that included:

Section "Device"
	Identifier  "Videocard0"
	Driver      "radeon"
	BusID       "PCI:1:0:0"
EndSection

no change in screen performance was observed.

Per notes in Ubuntu Launchpad bug 132707, added these option to Device section listed above:

	Option      "AccelMethod" "EXA"
	Option      "AccelDFS" "True"
	Option      "MigrationHeuristic" "greedy"

Adding these options this causes performance to improve significantly, however, using these options with Compiz causes screen corruption (believe this to be related to issues with AccelDFS and AGP).

The options listed restore X11 performance to Fedora 9 levels on the affected system, but do not allow Compiz to function without total-screen corruption.

I can also confirm that Fedora 10's graphics performance seems significantly reduced when compared to Fedora 9 on my Thinkpad T41, which has a radeon 7500. ( Smolt url http://smolt.fedoraproject.org/show?uuid=pub_9a5674cf-bc87-405c-b283-598d89524841 )

I don't use or need Compiz or other composited eyecandy, but would very much like to have the web browsers and other usual software working smoothly.

Additional note:

Switching to the vesa driver (!) solves most of the 2D drawing problems. I can now scroll a simple PDF or this web page at least ten times the "fps" as before. It even appears very smooth and fast-responding, which the radeon driver currently doesn't offer on my hardware.

Could the radeon driver become this fast if most of the 2D acceleration stuff was turned off? I'd still like to have 3D support around for some light OpenGL software.

Just updated from F9 to F10 on my T41, also with a Radeon 7500.  Holy crap performance is bad now, even without compiz and anything 3D.  Just 2D in metacity, moving windows around, switching tabs in gnome-terminal, etc is pretty laggy.  Anything I can do to help?

Linux localhost.localdomain 2.6.27.21-170.2.56.fc10.i686 #1 SMP Mon Mar 23 23:37:54 EDT 2009 i686 i686 i386 GNU/Linux

xorg-x11-server-Xorg-1.5.3-15.fc10.i386
xorg-x11-drv-ati-6.10.0-2.fc10.i386

Created attachment 340320 [details]
my X log

Created attachment 340383 [details]
sysprof of flipping between 2 tabs in gnome-terminal

Created attachment 340384 [details]
bzip2-ed raw sysprof dump

Created attachment 340390 [details]
drill-down into slow call stack

Created attachment 340391 [details]
drill-down into slow call stack

[dcbw@localhost ~]$ cat /etc/X11/xorg.conf
Section "Device"
 Identifier "ATI Radeon"
 Driver "radeon"
 Option "AccelMethod" "EXA"
 Option "MigrationHeuristic" "greedy"
EndSection
[dcbw@localhost ~]$ 

So MigrationHeuristic "greedy" as suggested above greatly improves 2D performance; seems that current X servers default to "always" (exa/exa.c) for some reason.  Ajax was ranting on the "always" heuristics supposed stupidity on IRC after I poked him about this, and unfortunately it doesn't look like there's a way to allow the driver-specific code to set a default EXA migration heurisitic, otherwise we could potentially have older radeon parts default to "greedy" or something.

But yeah, compiz is pretty broken with 'greedy'.

(In reply to comment #0)
> Description of problem:
> I have a Thinkpad T40 with a Radeon 7500 and with the upgrade from F9 to F10 I
> see terrible graphics performance. Compiz is pretty well unusable when running
> most programs. Scrolling and moving windows is slow. Even when using metacity
> the desktop is not as quick as it used to be. I have nomodeset in grub.conf
> (though modesetting doesn't appear to work for this chip anyway). I was able to
> gain some extra performance by creating a xorg.conf and setting Option
> "AccelMethod" "XAA".
> Version-Release number of selected component (if applicable):
> How reproducible:
> Everytime
> Steps to Reproduce:
> 1. Log in through GDM
> 2. Start using Gnome
> Actual results:
> Things are slower than with Fedora 9
> Expected results:
> An equally fast or faster desktop with Fedora 10
> Additional info:  

Hi Jesse,

I have a query for you...

Is your Video adapter only a ATI Radeon 7500 OR ATI "Mobility" Radeon 7500   ????

I have IBM Thinkpad R40 with ATI mobility Radeon 7500

Same issue of slow performance on F10 

I added the following two parameters in Xorg.conf

Option "AccelMethod" "EXA"
Option "AccelDFS" "true"

THE CPU percentage for Xorg process has considerably reduced.

I can use Firefox tabs with ease ( almost immediate response to mouse click )

Also when I click any icon in Dolphin, it opens up almost immediately

I hope my inputs will help in speedy resolution of this bug

Regards,
Shadab I. Wadiwala

Whatever changed between Fedora 10 and the upcoming Fedora 11 solved this issue on the Compaq X1000 laptop with ATI Technologies Inc Radeon RV250 [Mobility FireGL 9000] after upgrading to Fedora 11.

Relevant F11 xorg.conf settings are:

Section "ServerFlags"
	Option	    "AIGLX" "on"
EndSection

Section "Device"
	Identifier  "Videocard0"
	Driver      "radeon"
	BusID       "PCI:1:0:0"
	Option	    "NoAccel" "No"
	Option	    "AGPMode" "4"
	Option	    "AGPFastWrite" "No"
	Option	    "BusType" "AGP"
	Option	    "IgnoreEDID" "No"
	Option	    "PanelSize" "1920x1200"
	Option      "EnablePageFlip" "True"
	Option	    "RenderAccel" "Yes"
	Option      "AccelMethod" "EXA"
	Option      "AccelDFS" "True"
	Option	    "LVDSProbePLL" "On"
EndSection


compiz works perfectly as well -- no slowdowns, related stability issues or other issues related to the graphics system.  Additionally, the startup screen works flawlessly at 1920x1200 on the LVDS with no changes to the modesetting system.

Can somebody (especially reporter) confirm this to be fixed in F11?

On rawhide, when using the default settings (no xorg.conf) and kernel modesetting, things seem to be much better. 3d performance is acceptable, though not as fast as F9. It's great to see this moving forward! Should we close this?

Hi,

It would be better if we can have someone from Redhat or Fedora team confirming it to be fixed in F11 ..

My video card is:

ATI Technologies Inc RV370 5B60

I'm using radeon driver: xorg-x11-drv-ati-6.10.0-2.fc10.x86_64

I've tried both vanilla driver settings and these - both very, very slow rendering (terminal, Firefox, i.e. nothing remotely fancy).

# https://bugzilla.redhat.com/show_bug.cgi?id=242386
        Option      "AccelMethod" "EXA"
        Option      "AccelDFS" "on"

I can upgrade to FC11, but I'd rather test and confirm a workaround or fix for FC10 before doing that.

I think "the fix" itself is to upgrade to Fedora 11. A lot has changed in the way the graphics drivers work between Fedora 9 and 11. Fedora 10 is sort of half way there and didn't work well for me. Fedora 11 is much better.

Also I should note that a fresh install is probably better than a yum upgrade to take advantage of all the changes. Maybe try out the livecd and see how things feel.

(In reply to comment #29)
> I think "the fix" itself is to upgrade to Fedora 11.

That's not a fix for FC10.

I've switched to using the vesa driver, and performance is now bearable at least.

*** Bug 485651 has been marked as a duplicate of this bug. ***

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Triaged by many a Linux people, no fix.You can tweak older hardware but newer hardware such as 7800 series as a whole still suffers greatly from this, even with FC22.Changing a version release isnt the issue.

Its a core issue with radeon/ATI driver. Yes, KMS is here now, but it doesnt make much difference.And try setting below 24bit desktop(or switch to console tty in proprietary driver enabled)..it doesnt work. You get a black screen.

I know for a fact these modes are supported. I checked them out with freedos running an old VESA2 demo.The cards say they support 3, which was never realized as a standard but there is no 32-bit access point as required for vesa3 to work.Again, tested via freedos probing.Its a simple check for a VESA VBE string.IT ISNT THERE.

As ive posted elsewhere on another bug report, either the whole xorg and then some needs a code review or we have to really really look at why proprietary and even open source drivers arent working correctly on Linux.In other ways they are on par with the windows versions.

3D works and works well but with lagging 2d support its just awful.Using a 3d enabled desktop(how to do 3d a FLAT rectangle?) only exaserbates the underlying issues.

The core windowing code was made by Borland many a years ago and works near flawlessly.Its whatever was added on top of it and core drivers we need to look at.

Im running twin HD 7850s myself.Never really cared for ATI, Im an nVidia person but they are great for coin mining.(if 20 coins a day is ok)

Dunno about wontfix. CANTFIX?