On Tue, Jun 23, 2020 at 11:47 AM Roman Gushchin <guro@xxxxxx> wrote: > > Percpu memory can represent a noticeable chunk of the total memory > consumption, especially on big machines with many CPUs. Let's track > percpu memory usage for each memcg and display it in memory.stat. > > A percpu allocation is usually scattered over multiple pages (and nodes), > and can be significantly smaller than a page. So let's add a byte-sized > counter on the memcg level: MEMCG_PERCPU_B. Byte-sized vmstat infra > created for slabs can be perfectly reused for percpu case. > > Signed-off-by: Roman Gushchin <guro@xxxxxx> > Acked-by: Dennis Zhou <dennis@xxxxxxxxxx> Reviewed-by: Shakeel Butt <shakeelb@xxxxxxxxxx>
