Messages in this thread | | | Date | Thu, 25 Aug 2022 09:35:00 -0400 | From | Johannes Weiner <> | Subject | Re: [RFC PATCH] memcg: use root_mem_cgroup when css is inherited |
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On Thu, Aug 25, 2022 at 06:11:09PM +0800, Zhaoyang Huang wrote: > Sorry for any misunderstanding among the discussion. My purpose is > real and simple as I have stated from the very beginning that I would > like to have per-app cgroup hierarchy to charge memory to root if it > is not enabled explicitly for memory. The reason has also been stated > like reclaim and workingset regression in suren's report. I don't > think my proposal will do any harm to current v2's mechanism besides > asking for the admin echo "+memory" to their desire group.
It would permit children to escape parental control, completely breaking the hierarchy and delegation guarantees currently in place. That just isn't going to happen.
Nacked-by: Johannes Weiner <hannes@cmpxchg.org>
I would suggest focusing on finding the root cause for the reclaim problem you are describing. It's possible all we need is a fix to reclaim or the workingset code.
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