AMDGPU To Expose More Information About GPU Throttling Status
Written by Michael Larabel in Radeon on 29 May 2021 at 05:00 AM EDT. 2 Comments
RADEON --
The AMD Radeon "AMDGPU" kernel driver for Linux is poised to report more graphics throttling status information to user-space.

For those wondering if their graphics card is throttling and if it's due to power, current, or temperature reasons, the AMDGPU open-source kernel driver is being equipped with a throttler status field to be reported to user-space via the gpu_metrics data.

The throttling is handled by the graphics processor's firmware/microcode but the new AMDGPU code is about the reporting of this throttling information via an updated gpu_metrics interface so user-space can reliably obtain this information and in a manner not dependent upon a specific AMD GPU family. Granted, hopefully you don't have any serious GPU throttling issue but should you be running into such issues, the more specific information available is always better.

The patch series adds the throttler status bits and implements it for Arcturus, Navi 1, Navi 2, VanGogh, Renoir, and Aldebaran GPUs. For now though this expanded throttler status handling is just available in patch form and hasn't been queued into any "-next" branch yet.
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Michael Larabel is the principal author of Phoronix.com 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 OpenBenchmarking.org automated benchmarking software. He can be followed via Twitter or contacted via MichaelLarabel.com.

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