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    SubjectRe: [PATCH 0/6] make memblock allocator utilize the node's fallback info
    On Sun 24-02-19 20:34:03, Pingfan Liu wrote:
    > There are NUMA machines with memory-less node. At present page allocator builds the
    > full fallback info by build_zonelists(). But memblock allocator does not utilize
    > this info. And for memory-less node, memblock allocator just falls back "node 0",
    > without utilizing the nearest node. Unfortunately, the percpu section is allocated
    > by memblock, which is accessed frequently after bootup.
    >
    > This series aims to improve the performance of per cpu section on memory-less node
    > by feeding node's fallback info to memblock allocator on x86, like we do for page
    > allocator. On other archs, it requires independent effort to setup node to cpumask
    > map ahead.

    Do you have any numbers to tell us how much does this improve the
    situation?
    --
    Michal Hocko
    SUSE Labs

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