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    SubjectRe: [PATCH] dst numa: Avoid dst counter cacheline bouncing
    On Thu, Jun 23, 2005 at 08:10:06PM -0700, Christoph Lameter wrote:
    > The dst_entry structure contains an atomic counter that is incremented and
    > decremented for each network packet being sent. If there is a high number of
    > packets being sent from multiple processors then cacheline bouncing between
    > NUMA nodes can limit the tcp performance in a NUMA system.
    >
    > The following patch splits the usage counter into counters per node.
    >

    Do we really need to do a distributed reference counter implementation
    inside dst cache code ? If you are willing to wait for a while,
    we should have modified Rusty's bigref implementation on top of the
    interleaving dynamic per-cpu allocator. We can look at distributed
    reference counter for dst refcount then and see how that can be
    worked out.

    Thanks
    Dipankar
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