Mesa Radeon Vulkan Driver Sees ~30% Performance Boost For APUs

Written by Michael Larabel in Mesa on 24 August 2019 at 04:46 PM EDT. 21 Comments
Mesa's RADV Radeon Vulkan driver just saw a big performance optimization land to benefit APUs like Raven Ridge and Picasso, simply systems with no dedicated video memory.

The change by Feral's Alex Smith puts the uncached GTT type at a higher index than the visible vRAM type for these configurations without dedicated vRAM, namely APUs.

This fix boosted the average frame-rate for the Rise of the Tomb Raider Linux port by around 30% and other Feral Vulkan-powered Linux games as well as other titles.

The good news is due to the significant boost to performance and its high exposure, this "fix" to the RADV driver is marked as a candidate for back-porting to the Mesa 19.2 series rather than needing to wait until next quarter's Mesa 19.3.

Or if you are building your own Mesa, it's just a dozen line patch yielding the double digit Vulkan driver performance improvements.
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Michael Larabel is the principal author of and founded the site in 2004 with a focus on enriching the Linux hardware experience. Michael has written more than 20,000 articles covering the state of Linux hardware support, Linux performance, graphics drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and automated benchmarking software. He can be followed via Twitter, LinkedIn, or contacted via

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