On Mon, 2018-06-04 at 15:30 +0530, Srikar Dronamraju wrote: > Currently load_too_imbalance() cares about the slope of imbalance. > It doesn't care of the direction of the imbalance. > > However this may not work if nodes that are being compared have > dissimilar capacities. Few nodes might have more cores than other > nodes > in the system. Also unlike traditional load balance at a NUMA sched > domain, multiple requests to migrate from the same source node to > same > destination node may run in parallel. This can cause huge load > imbalance. This is specially true on a larger machines with either > large > cores per node or more number of nodes in the system. Hence allow > move/swap only if the imbalance is going to reduce.
> Signed-off-by: Srikar Dronamraju <sri...@linux.vnet.ibm.com> Reviewed-by: Rik van Riel <r...@surriel.com> -- All Rights Reversed.
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