On Fri 22-11-19 23:05:43, Pengfei Li wrote: > On Thu, 21 Nov 2019 19:04:01 +0100 > Michal Hocko <mhocko@xxxxxxxxxx> wrote: > > > On Thu 21-11-19 23:17:52, Pengfei Li wrote: > > [...] > > > Since I don't currently have multiple node NUMA systems, I would be > > > grateful if anyone would like to test this series of patches. > > > > I didn't really get to think about the actual patchset. From a very > > quick glance I am wondering whether we need to optimize as there are > > usually only small amount of numa nodes. But I am quite busy so I > > cannot really do any claims. > > Thanks for your comments. > > I think it's time to modify the zonelist to nodelist because the > zonelist is always in node order and the page reclamation is based on > node. > > I will do more performance testing to show that multi-node systems will > benefit from this series of patches. Sensible performance numbers on multiple workloads (ideally some real world ones rather than artificial microbenchmarks) is essential for a performance optimization that is this large. -- Michal Hocko SUSE Labs
