sched,numa: weigh nearby nodes for task placement on complex NUMA topologies (v2)
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- v1 Latest6 patches 0 repliesNew
Patches in v1 No applies recorded yet
| # | Subject and files | Size | Replies | Applied |
|---|---|---|---|---|
| 1/6 | sched,numa: export info needed for NUMA balancing on complex topologieskernel/ kernel/ | +5 | 0 replies | |
| 2/6 | sched,numa: classify the NUMA topology of a systeminclude/ kernel/ | +60 | 0 replies | |
| 3/6 | sched,numa: preparations for complex topology placementkernel/ | +37 | 0 replies | |
| 4/6 | sched,numa: calculate node scores in complex NUMA topologieskernel/ | +74 | 0 replies | |
| 5/6 | sched,numa: find the preferred nid with complex NUMA topologykernel/ | +87 | 0 replies | |
| 6/6 | sched,numa: check all nodes when placing a pseudo-interleaved groupkernel/ | +9 | 0 replies |
Reviews trailers per patch
None of the 6 patches has a Reviewed-by or Acked-by.
| Patch | Chegu Vinod |
|---|---|
| 1/6 | |
| 2/6 | T-b |
| 3/6 | T-b |
| 4/6 | T-b |
| 5/6 | T-b |
| 6/6 | T-b |
Trailers given in replies are filled; those carried in the patches from earlier versions are outlined with dashes.
Cover letter [PATCH 0/6] sched,numa: weigh nearby nodes for task placement on complex NUMA topologies (v2)
This patch set integrates two algorithms I have previously tested, one for glueless mesh NUMA topologies, where NUMA nodes communicate with far-away nodes through intermediary nodes, and backplane topologies, where communication with far-away NUMA nodes happens through backplane controllers (which cannot run tasks).
Due to the inavailability of 8 node systems, and the fact that I am flying out to Linuxcon Europe / Plumbers / KVM Forum on Friday, I have not tested these patches yet. However, with a conference (and many familiar faces) coming up, it seemed like a good idea to get the code out there, anyway.
Vinod tested the v1 series + patch 6 on a backplane topology system, and I changed v2 on a glueless mesh topology system. The patches appear to behave.
Placement of tasks on smaller, directly connected, NUMA systems should not be affected at all by this patch serie
v2: remove the hops table, and use numa_distance instead, tested
on a system with glueless mesh topology, not yet tested on a backplane style system (but the algorithm should be unchanged)