RADV Vulkan Performance Appears To Improve With Linux 4.11

The RADV Vulkan performance was noticeably better with Linux 4.11 DRM-Next code versus Linux 4.10, similar to our tests with the RX 470.

It's exciting to see the Vulkan RADV performance get faster with the AMDGPU kernel improvements in Linux 4.11.

What AMDGPU change is causing this faster performance? Marek had commented on the RX 470 article that he wasn't entirely sure, but could be due to the TTM memory management improvements in Linux 4.11. There is also more work on power management with Linux 4.11, but if the improvements were due to PM fixes, we probably would have seen better OpenGL performance in some tests. The AMDGPU changes for Linux 4.11 are covered in this article.

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