• Martin J. Bligh's avatar
    [PATCH] (3/3) NUMA rebalancer · 63ffe4d6
    Martin J. Bligh authored
    Patch from Erich Focht
    
    This adds a hook to rebalance globally across nodes every NODE_BALANCE_RATE
    iterations of the rebalancer. This allows us to easily tune on an architecture
    specific basis how often we wish to rebalance - machines with higher NUMA
    ratios (more expensive off-node access) will want to do this less often.
    It's currently set to 100 for NUMA-Q and 10 for other machines. If the
    imbalance between nodes is > 125%, we'll rebalance them. The hook for this
    is added to the NUMA definition of cpus_to_balance, so again, no impact
    on non-NUMA machines.
    63ffe4d6
topology.h 1.6 KB