Bug 19822

Summary:	OpenGL performance regression on Intel 855GM (libdrm 2.3.1 -> libdrm-intel 2.4.4)
Product:	DRI	Reporter:	Diego Escalante Urrelo <diegoe>
Component:	libdrm	Assignee:	Default DRI bug account <dri-devel>
Status:	RESOLVED INVALID	QA Contact:
Severity:	normal
Priority:	medium
Version:	unspecified
Hardware:	Other
OS:	All
Whiteboard:
i915 platform:		i915 features:

Description Diego Escalante Urrelo 2009-01-30 00:02:06 UTC

So I upgraded to jaunty and turns out that the intel driver 2.6.1 + libdrm-intel 2.4.4 (that perhaps is not precisely libdrm) makes opengl run SLOW; apparently based using software rendering; while intel driver 2.4.1 + libdrm 2.3.1 (from intrepid), everything is perfect and performance is good.

In one line: libdrm-intel 2.4.4 + intel driver 2.6.1 = slow opengl (apparently being rendered with software); libdrm 2.3.1 + intel driver 2.4.1 = good opengl.

:)

Am I missing something, or perhaps there's a dependency on a more recent version of something?

Comment 1 Diego Escalante Urrelo 2009-01-31 00:02:07 UTC

I must correct myself, kernel 2.6.28 was necessary to get a good performance. Although, the performance has indeed degraded a bit, like 10fps less with glxgears maximized to my 1024x768 screen.

Comment 2 Diego Escalante Urrelo 2009-03-26 11:26:07 UTC

Marking invalid, will report a new one if I find a bigger regression.

Comment 3 Diego Escalante Urrelo 2009-03-26 11:26:18 UTC

Marking invalid, will report a new one if I find a bigger regression.

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