On Fri, Jul 5, 2019 at 5:27 AM Timur Kristóf <timur.kris...@gmail.com> wrote:
> 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?). > Based on the SDMA results, you have 2.4 GB/s. For 128KB, it's 2.2 GB/s for GTT->VRAM copies. Marek
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