On Mon, May 30, 2022 at 7:27 PM Vasily Averin <vvs@xxxxxxxxxx> wrote: > > If enabled in config, alloc_rt_sched_group() is called for each new > cpu cgroup and allocates a huge (~1700 bytes) percpu struct rt_rq. > This significantly exceeds the size of the percpu allocation in the > common part of cgroup creation. > > Memory allocated during new cpu cgroup creation > (with enabled RT_GROUP_SCHED): > common part: ~11Kb + 318 bytes percpu > cpu cgroup: ~2.5Kb + ~2800 bytes percpu > > Accounting for this memory helps to avoid misuse inside memcg-limited > containers. > > Signed-off-by: Vasily Averin <vvs@xxxxxxxxxx> Acked-by: Muchun Song <songmuchun@xxxxxxxxxxxxx> Thanks.
