On Wed 12-12-18 12:00:16, Andrea Arcangeli wrote: [...] > Adding MADV_THISNODE/MADV_NODE_RECLAIM, will guarantee his proprietary > software binary will run at maximum performance without cache > interference, and he's happy to accept the risk of massive slowdown in > case the local node is truly OOM. The fallback, despite very > inefficient, will still happen without OOM killer triggering.
I believe this fits much better into a MPOL_$FOO rather than MADV_$FOO. But other than that I full agree. There are reasonable usecases for the node reclaim like behavior. As a bonus you do not get local node only but all nodes within reclaim distance as well. -- Michal Hocko SUSE Labs
