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 PJf48186 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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 > > I was able to see the fields and their corresponding values for schbench: > > numa_task_swapped : 2 > numa_task_migrated : 0 > numa_task_swapped : 1 > numa_task_migrated : 0 > numa_task_swapped : 0 > numa_task_migrated : 0 > numa_task_swapped : 1 > > Tested-by: Madadi Vineeth Reddy > Yes, the sysfs schedstat has to be enabled. Thanks for your test, Madadi! thanks, Chenyu > Thanks, > Madadi Vineeth Reddy > >> 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 >> --- >> RFC->v1: Rename the nr_numa_task_migrated to >> numa_task_migrated, and nr_numa_task_swapped >> numa_task_swapped in /proc/{PID}/sched, >> so both cgroup's memory.stat and task's >> sched have the same field name. >> --- >> include/linux/sched.h | 4 ++++ >> include/linux/vm_event_item.h | 2 ++ >> kernel/sched/core.c | 10 ++++++++-- >> kernel/sched/debug.c | 4 ++++ >> mm/memcontrol.c | 2 ++ >> mm/vmstat.c | 2 ++ >> 6 files changed, 22 insertions(+), 2 deletions(-)