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 QlkP0bFz 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balancing is helpful. NUMA balancing >> has two mechanisms for task migration: one is to migrate the task to >> an idle CPU in its preferred node, the other is to swap tasks on >> different nodes if they are on each other's preferred node. >> >> The kernel already has NUMA page migration statistics in >> /sys/fs/cgroup/mytest/memory.stat and /proc/{PID}/sched. >> but does not have statistics for task migration/swap. >> Add the task migration and swap count accordingly. >> >> The following two new fields: >> >> numa_task_migrated >> numa_task_swapped >> >> will be displayed in both >> /sys/fs/cgroup/{GROUP}/memory.stat and /proc/{PID}/sched > > Running sched-messaging with schedstats enabled, I could see both > "numa_task_migrated" and "numa_task_swapped" being populated for the > sched-messaging threads: > > $ for i in $(ls /proc/4030/task/); do grep "numa_task_migrated" /proc/ > $i/sched; done | tr -s ' ' | cut -d ' ' -f3 | sort | uniq -c >     400 0 >     231 1 >      10 2 > > $ for i in $(ls /proc/4030/task/); do grep "numa_task_swapped" /proc/$i/ > sched; done | tr -s ' ' | cut -d ' ' -f3 | sort | uniq -c >     389 0 >     193 1 >      47 2 >      11 3 >       1 4 > >> >> Previous RFC version can be found here: >> https://lore.kernel.org/ >> lkml/1847c5ef828ad4835a35e3a54b88d2e13bce0eea.1740483690.git.yu.c.chen@intel.com/ >> >> Signed-off-by: Chen Yu > > Feel free to add: > > Tested-by: K Prateek Nayak > Thanks Prateek! Thanks, Chenyu