Description karl_zhao 2025-02-14 10:49:53 UTC

Description of problem:

Feature: weighted interleave mempolicy from kernel 6.9.

Weighted interleave is a new interleave policy intended to make
use of heterogeneous memory environments appearing with CXL.

The existing interleave mechanism does an even round-robin
distribution of memory across all nodes in a nodemask, while
weighted interleave distributes memory across nodes according
to a provided weight. (Weight = # of page allocations per round)

Weighted interleave is intended to reduce average latency when
bandwidth is pressured - therefore increasing total throughput.

https://www.spinics.net/lists/linux-mm/msg371443.html