On Mon, Sep 13, 2021 at 1:37 AM Michal Hocko <mhocko@xxxxxxxx> wrote: > [...] > > However Shakeel Butt pointed that there are much more popular objects > > with the same life time and similar memory consumption, the accounting > > of which was decided to be rejected for performance reasons. > > Is there any measurable performance impact in this particular case? > I don't think there was any regression report or any performance evaluation. Linus raised the concern on the potential performance impact. I suggested to backoff for this allocation for now and revisit again once we have improved the memcg accounting for kernel memory.