Re: [PATCH 0/3 RESEND] Per memcg lru_gen node stat

[Huan Yang <link@vivo.com>]

在 2023/10/20 0:01, T.J. Mercier 写道:
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> On Wed, Oct 18, 2023 at 7:32 PM Huan Yang <link@vivo.com> wrote:
>>> Android can't use debugfs in production, but I
>>> think we'd prefer to use memory.reclaim for eviction anyway because it
>>> respects memcg limits and reclaims from slab.
>> Yes, shrink control this actually can use proactive reclaim.
>>> So maybe it's possible to add just aging functionality specific to
>>> MGLRU? It'd be nice to know how you're going to use the aging, or why
>> Due to debugfs not always mount, if we want to now lrugen's info, maybe
>> nice to offer a memcg's node to show per memcg's lrugen info.
>>> you want this version of eviction instead of what memory.reclaim does.
> I think Yu's inquiry was about whether you will look at the lrugen
Thanks to point that.
> info from the memcg file for a production use case, or just for
> debugging where you don't have debugfs for some reason. Because it's a
Yes, for now use, just collect log from it, not have control logic.
For future use, maybe we need to control a memcg's lru_gen anon seq reclaim.
(just assume)
> long term commitment to add the file.

OK, if I can offer a actually use case, I will send again

Thanks too much.