[Cc Vlastimil]
On Tue 04-12-18 13:43:31, osalvador@xxxxxxx wrote:
> On 2018-12-04 12:31, David Hildenbrand wrote:
> > If I am not wrong, zone_contiguous is a pure mean for performance
> > improvement, right? So leaving zone_contiguous unset is always save. I
> > always disliked the whole clear/set_zone_contiguous thingy. I wonder if
> > we can find a different way to boost performance there (in the general
> > case). Or is this (zone_contiguous) even worth keeping around at all for
> > now? (do we have performance numbers?)
>
> It looks like it was introduced by 7cf91a98e607
> ("mm/compaction: speed up pageblock_pfn_to_page() when zone is contiguous").
>
> The improve numbers are in the commit.
> So I would say that we need to keep it around.
Is that still the case though?
--
Michal Hocko
SUSE Labs
