Bug 20935 (Karry)

Summary:	Perfomance regresion in r300_dri version 7.3 (7.2 is twice faster)
Product:	Mesa	Reporter:	Lukáš Karas <lukas.karas>
Component:	Drivers/DRI/r300	Assignee:	Default DRI bug account <dri-devel>
Status:	RESOLVED FIXED	QA Contact:	Lukáš Karas <lukas.karas>
Severity:	normal
Priority:	low	CC:	filipp.andjelo
Version:	unspecified
Hardware:	x86-64 (AMD64)
OS:	Linux (All)
Whiteboard:
i915 platform:		i915 features:

Description Lukáš Karas 2009-03-29 15:25:11 UTC

Hi, version 7.3 of Mesa (MesaLib + MesaGlut) is twice slower that version 7.2 on my system! (I mean half fps in GlxGears, TuxRacer and other games.)

I compile both version with the same parameters 
OPT_FLAGS  = -O3 -g -fomit-frame-pointer -pipe -march=k8 -funroll-loops \
-mfpmath=sse -mmmx -msse -msse2 -m3dnow -mcx16 

My graphic card is ATI Radeon Express 1100 (chipset RS485).

Comment 1 Maciej Cencora 2009-04-21 12:30:01 UTC

This is probably the same bug as mentioned here http://marc.info/?l=mesa3d-dev&m=124026675231694&w=2

Currently I'm trying to find a solution that doesn't lockup GPU.

Comment 2 Maciej Cencora 2009-05-01 04:14:23 UTC

Fixed with 033d1365e6fa6e57bc11b47831af0cb4b7ad2edf in radeon-rewrite branch.

Comment 3 Alex Deucher 2009-05-17 07:55:19 UTC

*** Bug 21779 has been marked as a duplicate of this bug. ***

Comment 4 Filipp Andjelo 2009-05-22 01:21:15 UTC

Nice!

I'm a newbie and I would like to test the fix on my system, but I have no idea, how and were I could find the fixed piece of code. Could anyone help me? May be a link to a howto o s.t. like that?! thx

Comment 5 Alex Deucher 2009-05-22 07:49:27 UTC

(In reply to comment #4)
> Nice!
> 
> I'm a newbie and I would like to test the fix on my system, but I have no idea,
> how and were I could find the fixed piece of code. Could anyone help me? May be
> a link to a howto o s.t. like that?! thx
> 

Either build the radeon-rewrite branch of mesa or use distro provided testing packages of the radeon-rewrite branch.  Most distro's provide them.

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