Re: [PATCH] memcg: introduce per-memcg reclaim interface

[Michal Hocko]

On Tue 22-09-20 11:10:17, Shakeel Butt wrote:
> On Tue, Sep 22, 2020 at 9:55 AM Michal Hocko <mhocko@xxxxxxxx> wrote:
[...]
> > So far I have learned that you are primarily working around an
> > implementation detail in the zswap which is doing the swapout path
> > directly in the pageout path.
> 
> Wait how did you reach this conclusion? I have explicitly said that we
> are not using uswapd like functionality in production. We are using
> this interface for proactive reclaim and proactive reclaim is not a
> workaround for implementation detail in the zswap.

Hmm, I must have missed the distinction between the two you have
mentioned. Correct me if I am wrong but "latency sensitive" workload is
the one that cannot use the high limit, right. For some reason I thought
that your pro-active reclaim usecase is also not compatible with the
throttling imposed by the high limit. Hence my conclusion above.
-- 
Michal Hocko
SUSE Labs