Re: [PATCH] sched, fair: Allow a small load imbalance between low utilisation SD_NUMA domains v4

[Peter Zijlstra]

On Fri, Jan 17, 2020 at 04:09:33PM +0100, Vincent Guittot wrote:
> On Tue, 14 Jan 2020 at 11:13, Mel Gorman <mgorman@xxxxxxxxxxxxxxxxxxx> wrote:

> > In general, the patch simply seeks to avoid unnecessary cross-node
> > migrations in the basic case where imbalances are very small.  For low
> > utilisation communicating workloads, this patch generally behaves better
> > with less NUMA balancing activity. For high utilisation, there is no
> > change in behaviour.
> >
> > Signed-off-by: Mel Gorman <mgorman@xxxxxxxxxxxxxxxxxxx>
> 
> Reviewed-by: Vincent Guittot <vincent.guittot@xxxxxxxxxx>

Thanks all!