Re: [RFC PROPOSAL] memcg: per-memcg user space reclaim interface

[Michal Koutný]

Hi Shakeel.

On Tue, Jul 07, 2020 at 10:02:50AM -0700, Shakeel Butt <shakeelb@xxxxxxxxxx> wrote:
> > Well, I was talkingg about memory.low. It is not meant only to protect
> > from the global reclaim. It can be used for balancing memory reclaim
> > from _any_ external memory pressure source. So it is somehow related to
> > the usecase you have mentioned.
> >
> 
> For the uswapd use-case, I am not concerned about the external memory
> pressure source but the application hitting its own memory.high limit
> and getting throttled.
FTR, you can transform own memory.high into "external" pressure with a
hierarchy such as

  limit-group			memory.high=N+margin memory.low=0
  `- latency-sensitive-group	memory.low=N
  `- regular-group		memory.low=0

Would that ensure the latency targets?

Michal

Attachment: signature.asc
Description: Digital signature