On 2019-06-28 2:21 p.m., Timur Kristóf wrote: > > I haven't found a good way to measure the maximum PCIe throughput > between the CPU and GPU, amdgpu.benchmark=3 on the kernel command line will measure throughput for various transfer sizes during driver initialization. > but I did take a look at AMD's sysfs interface at > /sys/class/drm/card1/device/pcie_bw which while running the bottlenecked > game. The highest throughput I saw there was only 2.43 Gbit /sec. PCIe bandwidth generally isn't a bottleneck for games, since they don't constantly transfer large data volumes across PCIe, but store them in the GPU's local VRAM, which is connected at much higher bandwidth. -- Earthling Michel Dänzer | https://www.amd.com Libre software enthusiast | Mesa and X developer _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/dri-devel
