Re: [mm/memcg] bd0b230fe1: will-it-scale.per_process_ops -22.7% regression

Michal Hocko
2020-11-02T09:27:58Z

On Mon 02-11-20 17:15:43, kernel test robot wrote:
> Greeting,
>
> FYI, we noticed a -22.7% regression of will-it-scale.per_process_ops due to commit:
>
>
> commit: bd0b230fe14554bfffbae54e19038716f96f5a41 ("mm/memcg: unify swap and memsw page counters")
> https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git master

I really fail to see how this can be anything else than a data structure
layout change. There is one counter less.

btw. are cgroups configured at all? What would be the configuration?
--
Michal Hocko
SUSE Labs