On Tue, Aug 06, 2019 at 04:23:29PM +0800, Yafang Shao wrote: > On Tue, Aug 6, 2019 at 3:35 PM Michal Hocko <mhocko@xxxxxxxxxx> wrote: > > Considering that this is a long term behavior of a rarely used node > > reclaim I would rather not touch it unless some _real_ workload suffers > > from this behavior. Or is there any reason to fix this even though there > > is no evidence of real workloads suffering from the current behavior? > > -- > > When we do performance tuning on some workloads(especially if this > workload is NUMA sensitive), sometimes we may enable it on our test > environment and then do some benchmark to dicide whether or not > applying it on the production envrioment. Although the result is not > good enough as expected, it is really a performance tuning knob. So am I understanding correctly that you sometimes enable node reclaim in production workloads when you find the numbers justify it? If so, which ones?
