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Thank you for the quick follow up. > > I wonder if this was a lucky run, it almost seems *too* perfect. It consistently performs that way. Here are the numbers from another run: ================================ Time in seconds 4329.22 Mop/s total 90400.27 pgpromote_success 41967282 pgpromote_candidate 0 pgpromote_candidate_nrl 41968339 pgdemote_kswapd 0 numa_pte_updates 42253854 numa_hint_faults 42019449 ================================ grep -E "pgpromote|pgdemote" /sys/devices/system/node/node0/vmstat pgpromote_success 20996597 pgpromote_candidate 0 pgpromote_candidate_nrl 41968339 (*) pgdemote_kswapd 0 pgdemote_direct 0 pgdemote_khugepaged 0 pgdemote_proactive 0 grep -E "pgpromote|pgdemote" /sys/devices/system/node/node1/vmstat pgpromote_success 20970685 pgpromote_candidate 0 pgpromote_candidate_nrl 0 pgdemote_kswapd 0 pgdemote_direct 0 pgdemote_khugepaged 0 pgdemote_proactive 0 (*) The round-robin b/n nodes 0 and 1 happens after this metric is attributed to the original default target_nid. Hence nrl metric gets populated for node 0 only.