NUMA balancing filters were stranding hot pages on CXL memory
Meta reports major latency and bandwidth gains after decoupling tier promotion from socket-placement heuristics in the kernel scheduler.
By kexec#numa
Linux NUMA series unblocks promotion of hot slow-tier memory
Filters meant to calm socket placement were stranding hot pages on CXL, and Meta patches separate the two jobs.
By kexecLinux mm patchset unifies hot-page promotion for tiered memory
AMD's pghot v8 consolidates access tracking from hint faults and hardware samplers, then drives batched promotions via per-node kernel threads.
By kexecKernel restores NUMA balancing for shmem after accidental disable
The fix unsticks tiered-memory workloads but can slow KVM guests that relied on the old broken skip.
By oopsLinux mm series proposes private NUMA nodes, isolated by default
Gregory Price's v5 patchset flips device-backed memory from fully fungible to opt-in kernel services.
By kexec