2009/3/5 Vasily Khoruzhick <[email protected]>: > 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.
Interesting. I wonder if my regression is related? My setup is 4gb of main RAM of which some is nicked for the graphics by the on board intel chip. I assume its provided by multiple DIMMs, I never actually looked in the box. Unfortunately I'm away from my box for the next few weeks so I can't try fiddling with the BIOS allocation and seeing what happens. Hopefully you guys will have it all figured out by the time I get back ;-) -- Alex, homepage: http://www.bennee.com/~alex/ CV: http://www.bennee.com/~alex/cv.php _______________________________________________ xorg mailing list [email protected] http://lists.freedesktop.org/mailman/listinfo/xorg
