From: Michal Hocko <mhocko@suse.com>
To: Vasily Averin <vvs@openvz.org>
Cc: kernel@openvz.org, "Andrew Morton" <akpm@linux-foundation.org>,
linux-kernel@vger.kernel.org, linux-mm@kvack.org,
"Shakeel Butt" <shakeelb@google.com>,
"Roman Gushchin" <roman.gushchin@linux.dev>,
"Michal Koutný" <mkoutny@suse.com>,
"Vlastimil Babka" <vbabka@suse.cz>,
"Muchun Song" <songmuchun@bytedance.com>,
cgroups@vger.kernel.org
Subject: Re: [PATCH mm v5 0/9] memcg: accounting for objects allocated by mkdir, cgroup
Date: Thu, 23 Jun 2022 18:07:55 +0200 [thread overview]
Message-ID: <YrSP25ebDmXE+kPS@dhcp22.suse.cz> (raw)
In-Reply-To: <c516033f-a9e4-3485-26d9-a68afa694c1d@openvz.org>
On Thu 23-06-22 18:03:31, Vasily Averin wrote:
> Dear Michal,
> do you still have any concerns about this patch set?
Yes, I do not think we have concluded this to be really necessary. IIRC
Roman would like to see lingering cgroups addressed in not-so-distant
future (http://lkml.kernel.org/r/Ypd2DW7id4M3KJJW@carbon) and we already
have a limit for the number of cgroups in the tree. So why should we
chase after allocations that correspond the cgroups and somehow try to
cap their number via the memory consumption. This looks like something
that will get out of sync eventually and it also doesn't seem like the
best control to me (comparing to an explicit limit to prevent runaways).
--
Michal Hocko
SUSE Labs
next prev parent reply other threads:[~2022-06-23 16:08 UTC|newest]
Thread overview: 65+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <Yn6aL3cO7VdrmHHp@carbon>
2022-05-21 16:37 ` [PATCH mm v2 0/9] memcg: accounting for objects allocated by mkdir cgroup Vasily Averin
2022-05-30 11:25 ` [PATCH mm v3 " Vasily Averin
2022-05-30 11:55 ` Michal Hocko
2022-05-30 13:09 ` Vasily Averin
2022-05-30 14:22 ` Michal Hocko
2022-05-30 19:58 ` Vasily Averin
2022-05-31 7:16 ` Michal Hocko
2022-06-01 3:43 ` Vasily Averin
2022-06-01 9:15 ` Michal Koutný
2022-06-01 9:32 ` Michal Hocko
2022-06-01 13:05 ` Michal Hocko
2022-06-01 14:22 ` Roman Gushchin
2022-06-01 15:24 ` Michal Hocko
2022-06-01 9:26 ` Michal Hocko
2022-06-13 5:34 ` [PATCH mm v4 " Vasily Averin
2022-06-23 14:50 ` [PATCH mm v5 0/9] memcg: accounting for objects allocated by mkdir, cgroup Vasily Averin
2022-06-23 15:03 ` Vasily Averin
2022-06-23 16:07 ` Michal Hocko [this message]
2022-06-23 16:55 ` Shakeel Butt
2022-06-24 10:40 ` Vasily Averin
2022-06-24 12:26 ` Michal Koutný
2022-06-24 13:59 ` Michal Hocko
2022-06-25 9:43 ` [PATCH RFC] memcg: avoid idr ids space depletion Vasily Averin
[not found] ` <c53e1df0-5174-66de-23cc-18797f0b512d@openvz.org>
2022-06-26 1:56 ` [PATCH RFC] memcg: notify about global mem_cgroup_id " Roman Gushchin
[not found] ` <97bed1fd-f230-c2ea-1cb6-8230825a9a64@openvz.org>
2022-06-27 3:23 ` [PATCH mm v2] " Muchun Song
[not found] ` <f3e4059c-69ea-eccd-a22f-9f6c6780f33a@openvz.org>
2022-06-28 1:11 ` Roman Gushchin
2022-06-28 9:08 ` Michal Koutný
2022-06-27 16:37 ` [PATCH mm v5 0/9] memcg: accounting for objects allocated by mkdir, cgroup Shakeel Butt
2022-07-01 11:03 ` Michal Hocko
2022-07-10 18:53 ` Vasily Averin
2022-07-11 16:24 ` Michal Hocko
2022-06-23 14:50 ` [PATCH mm v5 1/9] memcg: enable accounting for struct cgroup Vasily Averin
2022-06-23 14:50 ` [PATCH mm v5 2/9] memcg: enable accounting for kernfs nodes Vasily Averin
2022-06-23 14:51 ` [PATCH mm v5 3/9] memcg: enable accounting for kernfs iattrs Vasily Averin
2022-06-13 5:34 ` [PATCH mm v4 1/9] memcg: enable accounting for struct cgroup Vasily Averin
2022-06-13 5:34 ` [PATCH mm v4 2/9] memcg: enable accounting for kernfs nodes Vasily Averin
2022-06-13 5:34 ` [PATCH mm v4 3/9] memcg: enable accounting for kernfs iattrs Vasily Averin
[not found] ` <cover.1653899364.git.vvs@openvz.org>
2022-05-30 11:25 ` [PATCH mm v3 1/9] memcg: enable accounting for struct cgroup Vasily Averin
2022-05-30 11:26 ` [PATCH mm v3 2/9] memcg: enable accounting for kernfs nodes Vasily Averin
2022-05-30 11:26 ` [PATCH mm v3 3/9] memcg: enable accounting for kernfs iattrs Vasily Averin
2022-05-30 11:26 ` [PATCH mm v3 4/9] memcg: enable accounting for struct simple_xattr Vasily Averin
2022-05-30 11:26 ` [PATCH mm v3 5/9] memcg: enable accounting for percpu allocation of struct psi_group_cpu Vasily Averin
2022-05-30 11:26 ` [PATCH mm v3 6/9] memcg: enable accounting for percpu allocation of struct cgroup_rstat_cpu Vasily Averin
2022-05-30 15:04 ` Muchun Song
[not found] ` <a1fcdab2-a208-0fad-3f4e-233317ab828f@openvz.org>
2022-05-30 15:06 ` [PATCH mm v3 9/9] memcg: enable accounting for perpu allocation of struct rt_rq Muchun Song
2022-05-21 16:37 ` [PATCH mm v2 1/9] memcg: enable accounting for struct cgroup Vasily Averin
2022-05-22 6:37 ` Muchun Song
2022-05-21 16:37 ` [PATCH mm v2 2/9] memcg: enable accounting for kernfs nodes Vasily Averin
2022-05-22 6:37 ` Muchun Song
2022-05-21 16:37 ` [PATCH mm v2 3/9] memcg: enable accounting for kernfs iattrs Vasily Averin
2022-05-22 6:38 ` Muchun Song
2022-05-21 16:38 ` [PATCH mm v2 4/9] memcg: enable accounting for struct simple_xattr Vasily Averin
2022-05-22 6:38 ` Muchun Song
2022-05-21 16:38 ` [PATCH mm v2 5/9] memcg: enable accounting for percpu allocation of struct psi_group_cpu Vasily Averin
2022-05-21 21:34 ` Shakeel Butt
2022-05-22 6:40 ` Muchun Song
2022-05-25 1:30 ` Roman Gushchin
[not found] ` <c0d01d6e-530c-9be3-1c9b-67a7f8ea09be@openvz.org>
2022-05-21 17:58 ` [PATCH mm v2 6/9] memcg: enable accounting for percpu allocation of struct cgroup_rstat_cpu Vasily Averin
2022-05-21 21:35 ` Shakeel Butt
2022-05-21 22:05 ` kernel test robot
2022-05-25 1:31 ` Roman Gushchin
[not found] ` <d7094aa2-1cd0-835c-9fb7-d76003c47dad@openvz.org>
2022-05-21 21:37 ` [PATCH mm v2 9/9] memcg: enable accounting for percpu allocation of struct rt_rq Shakeel Butt
2022-05-25 1:31 ` Roman Gushchin
[not found] ` <9925d0ba-40d7-e3a8-1fef-054968b26ce6@openvz.org>
2022-05-22 6:47 ` [PATCH mm v2 7/9] memcg: enable accounting for large allocations in mem_cgroup_css_alloc Muchun Song
[not found] ` <46bbde64-7290-cabb-8fef-6f4a30263d8c@openvz.org>
2022-05-22 6:49 ` [PATCH mm v2 8/9] memcg: enable accounting for allocations in alloc_fair_sched_group Muchun Song
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