On Wed, 2019-07-03 at 14:44 -0400, Marek Olšák wrote: > You can run: > AMD_DEBUG=testdmaperf glxgears > > It tests transfer sizes of up to 128 MB, and it tests ~60 slightly > different methods of transfering data. > > Marek Thanks Marek, I didn't know about that option. Tried it, here is the output: https://pastebin.com/raw/9SAAbbAA I'm not quite sure how to interpret the numbers, they are inconsistent with the results from both pcie_bw and amdgpu.benchmark, for example GTT->VRAM at a 128 KB is around 1400 MB/s (I assume that is megabytes / sec, right?). It is also weird that unlike amdgpu.benchmark, the larger than 128 KB transfers didn't actually get slightly slower. Michel, can you make sense of this? Best regards, Tim _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/dri-devel
