Hi Kaiyang, On 2025-03-05 at 14:38:14 +0000, Kaiyang Zhao wrote: > On Tue, Feb 25, 2025 at 09:59:33PM +0800, Chen Yu wrote: > > This per-cgroup NUMA balancing control was once proposed in > > 2019 by Yun Wang[1]. Then, in 2024, Kaiyang Zhao mentioned > > that he was working with Meta on per-cgroup NUMA control[2] > > during a discussion with David Rientjes. > > > > I could not find further discussion regarding per-cgroup NUMA > > balancing from that point on. This set of RFC patches is a > > rough and compile-passed version, and may have unhandled cases > > (for example, THP). It has not been thoroughly tested and is > > intended to initiate or resume the discussion on the topic of > > per-cgroup NUMA load balancing. > > Hello Chen, > > It's nice to see people interested in this. I posted a set of RFC patches > later[1] that focuses on the fairness issue in memory tiering. It mostly > concerns the demotion side of things, and the promotion / NUMA balancing > side of things was left out of the patch set. > I see, thanks for the information. > I don't work for Meta now, but my understanding is that they'll attempt > to push through a solution for per-cgroup control of memory tiering that > is in the same vein as my RFC patches, and it may include controls for > per-group NUMA balancing in the context of tiered memory. > OK, it would be nice to see that patch set. We can continue the disscussion on this basic per-cgroup Numa balancing control, the tiered memory promotion could be on top of that IMO. thanks, Chenyu > Best, > Kaiyang > > [1] https://lore.kernel.org/linux-mm/20240920221202.1734227-1-kaiyang2@xxxxxxxxxx/
