Re: [PATCH] mm/slub: allocate sheaves on local memory nodes

[Harry Yoo]

On 5/25/26 5:13 PM, Hao Li wrote:
> Sheaves are per-CPU allocator metadata and their object arrays are accessed
> from the local fast paths. Allocate them with a NUMA node hint instead of
> using plain kzalloc(). While no measurable performance improvement was
> observed, this approach is theoretically correct.
>
> During bootstrap we allocate sheaves for all possible CPUs before every
> possible CPU has an initialized cpu_to_mem() value, so compute the
> memory node from local_memory_node(cpu_to_node(cpu)) just like
> what __build_all_zonelists does.


What about sheaves for non-kmalloc-normal caches that are allocated & 
initialized by init_percpu_sheaves()?

Would addressing above change "no measurable performance impact was 
observed"?

--
Cheers,
Harry / Hyeonggon

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