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    SubjectRe: [PATCH] add scheduler domains for ia64

    * Jesse Barnes <> wrote:

    > This patch adds some more NUMA specific logic to the creation of
    > scheduler domains. Domains spanning all CPUs in a large system are
    > too large to schedule across efficiently, leading to livelocks and
    > inordinate amounts of time being spent in scheduler routines. With
    > this patch applied, the node scheduling domains for NUMA platforms
    > will only contain a specified number of nearby CPUs, based on the
    > value of SD_NODES_PER_DOMAIN. It also allows arches to override
    > SD_NODE_INIT, which sets the domain scheduling parameters for each
    > node's domain. This is necessary especially for large systems.

    looks good to me too.

    Signed-off-by: Ingo Molnar <>

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