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Kernel: Firmware Updates, NUMA, and GPU Statistics

Submitted by Roy Schestowitz on Sunday 12th of December 2021 04:02:55 PM Filed under
Linux
  • Richard Hughes: Can you help with bulk storage firmware updates?

    Does anyone have any examples of peripheral devices that can have their firmware upgraded by dropping a new firmware file onto a mounted volume? e.g. insert device, new disk appears, firmware file is copied over, then the firmware update completes?

  • Speculative NUMA Fault Support Proposed For Improving Tiered Memory Linux Performance - Phoronix

    This year there has been a lot of Linux kernel work around improving the handling of tiered memory servers, namely those with traditional system RAM augmented by Intel Optane DC persistent memory. There has been work to demote pages during reclamation to the slower persistent memory, improving NUMA balancing around such systems to optimize memory placement, transparent page placement and related work around tiered memory Linux servers.

    The latest work comes by way of Alibaba and they are proposing speculative NUMA fault support for tiered memory systems. The proposed patches for speculative NUMA fault support will handle promotion of slow/hot memory to fast memory for enhancing system performance.

  • As We Prepare For 2022, Linux Still Doesn't Have Standardized Per-Client GPU Stats Reporting - Phoronix

    One of the Intel patch series we have been waiting to see mainlined since all the way back in 2018 is around per-client GPU metrics reporting for being able to show various GPU engine activity on a per-process basis. Every once in a while the patches have been revived but have yet to reach mainline. They recently were revved once again, leaving us hope that in 2022 we might finally see this standardized per-client/process GPU statistics reporting land in the mainline kernel.

    While it started out as an Intel driver effort and fitting the needs of their "intel_gpu_top" utility for exposing to users various per-process GPU metrics, it was later expanded to become a DRM driver standard so it could be supported by other Direct Rendering Manager drivers like AMDGPU. In turn this would ease the burden on user-space software wanting to make use of this information like GNOME/KDE System Monitor or other software that may want insights into per-process GPU usage whether it be for 3D, media engines, etc.

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