Tiling on i915-class hardware
Vasily Khoruzhick
anarsoul at gmail.com
Thu Mar 5 00:12:11 PST 2009
Hi, I've just tested i915 tiling in 2 ram configurations:
512mb, single channel: tiling works perfectly, no performance issues with
tiling enabled
512mb + 512mb dual channel interleaved: When tiling is enabled it introduces
performance regression, when I enable tiling 3D performance is low. With
tiling disabled I hit this bug:
http://bugs.freedesktop.org/show_bug.cgi?id=19738
So, the problem exists at least for configurations with 2 memory modules in
dual channel interleaved mode, and it doesn't exist in single channel mode.
I can provide any additional info if you need.
Regards
Vasily
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