From: "Michal Koutný" <mkoutny@suse.com>
To: Roman Gushchin <guro@fb.com>
Cc: linux-mm@kvack.org, Michal Hocko <mhocko@kernel.org>,
Johannes Weiner <hannes@cmpxchg.org>,
linux-kernel@vger.kernel.org, kernel-team@fb.com,
Shakeel Butt <shakeelb@google.com>,
Vladimir Davydov <vdavydov.dev@gmail.com>,
Waiman Long <longman@redhat.com>
Subject: Re: [PATCH RFC 00/14] The new slab memory controller
Date: Tue, 1 Oct 2019 17:12:02 +0200 [thread overview]
Message-ID: <20191001151202.GA6678@blackbody.suse.cz> (raw)
In-Reply-To: <20190905214553.1643060-1-guro@fb.com>
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On Thu, Sep 05, 2019 at 02:45:44PM -0700, Roman Gushchin <guro@fb.com> wrote:
> Roman Gushchin (14):
> [...]
> mm: memcg/slab: use one set of kmem_caches for all memory cgroups
From that commit's message:
> 6) obsoletes kmem.slabinfo cgroup v1 interface file, as there are
> no per-memcg kmem_caches anymore (empty output is printed)
The empty file means no allocations took place in the particular cgroup.
I find this quite a surprising change for consumers of these stats.
I understand obtaining the same data efficiently from the proposed
structures is difficult, however, such a change should be avoided. (In
my understanding, obsoleted file ~ not available in v2, however, it
should not disappear from v1.)
Michal
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next prev parent reply other threads:[~2019-10-01 15:12 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-09-05 21:45 [PATCH RFC 00/14] The new slab memory controller Roman Gushchin
2019-09-05 21:45 ` [PATCH RFC 01/14] mm: memcg: subpage charging API Roman Gushchin
2019-09-16 12:56 ` Johannes Weiner
2019-09-17 2:27 ` Roman Gushchin
2019-09-17 8:50 ` Johannes Weiner
2019-09-17 18:33 ` Roman Gushchin
2019-09-05 21:45 ` [PATCH RFC 02/14] mm: memcg: introduce mem_cgroup_ptr Roman Gushchin
2019-09-05 22:34 ` Roman Gushchin
2019-09-05 21:45 ` [PATCH RFC 03/14] mm: vmstat: use s32 for vm_node_stat_diff in struct per_cpu_nodestat Roman Gushchin
2019-09-05 21:45 ` [PATCH RFC 04/14] mm: vmstat: convert slab vmstat counter to bytes Roman Gushchin
2019-09-16 12:38 ` Johannes Weiner
2019-09-17 2:08 ` Roman Gushchin
2019-09-05 21:45 ` [PATCH RFC 05/14] mm: memcg/slab: allocate space for memcg ownership data for non-root slabs Roman Gushchin
2019-09-05 21:45 ` [PATCH RFC 06/14] mm: slub: implement SLUB version of obj_to_index() Roman Gushchin
2019-09-05 21:45 ` [PATCH RFC 07/14] mm: memcg/slab: save memcg ownership data for non-root slab objects Roman Gushchin
2019-09-05 21:45 ` [PATCH RFC 08/14] mm: memcg: move memcg_kmem_bypass() to memcontrol.h Roman Gushchin
2019-09-05 21:45 ` [PATCH RFC 09/14] mm: memcg: introduce __mod_lruvec_memcg_state() Roman Gushchin
2019-09-05 22:37 ` [PATCH RFC 02/14] mm: memcg: introduce mem_cgroup_ptr Roman Gushchin
2019-09-17 19:48 ` [PATCH RFC 00/14] The new slab memory controller Waiman Long
2019-09-17 21:24 ` Roman Gushchin
2019-09-19 13:39 ` Suleiman Souhlal
2019-09-19 16:22 ` Roman Gushchin
2019-09-19 21:10 ` Suleiman Souhlal
2019-09-19 21:40 ` Roman Gushchin
2019-10-01 15:12 ` Michal Koutný [this message]
2019-10-02 2:09 ` Roman Gushchin
2019-10-02 13:00 ` Suleiman Souhlal
2019-10-03 10:47 ` Michal Koutný
2019-10-03 15:52 ` Roman Gushchin
2019-12-09 9:17 ` [PATCH 00/16] " Bharata B Rao
2019-12-09 11:56 ` Bharata B Rao
2019-12-09 18:04 ` Roman Gushchin
2019-12-10 6:23 ` Bharata B Rao
2019-12-10 18:05 ` Roman Gushchin
2020-01-13 8:47 ` Bharata B Rao
2020-01-13 15:31 ` Roman Gushchin
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