From: Shakeel Butt <shakeel.butt@linux.dev>
To: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
linux-kernel@vger.kernel.org,
"Paul E. McKenney" <paulmck@kernel.org>,
Steven Rostedt <rostedt@goodmis.org>,
Masami Hiramatsu <mhiramat@kernel.org>,
Dennis Zhou <dennis@kernel.org>, Tejun Heo <tj@kernel.org>,
Christoph Lameter <cl@linux.com>,
Martin Liu <liumartin@google.com>,
David Rientjes <rientjes@google.com>,
christian.koenig@amd.com, SeongJae Park <sj@kernel.org>,
Michal Hocko <mhocko@suse.com>,
Johannes Weiner <hannes@cmpxchg.org>,
Sweet Tea Dorminy <sweettea-kernel@dorminy.me>,
Lorenzo Stoakes <ljs@kernel.org>,
"Liam R . Howlett" <liam@infradead.org>,
Mike Rapoport <rppt@kernel.org>,
Suren Baghdasaryan <surenb@google.com>,
Vlastimil Babka <vbabka@kernel.org>,
Christian Brauner <brauner@kernel.org>,
Wei Yang <richard.weiyang@gmail.com>,
David Hildenbrand <david@kernel.org>,
Miaohe Lin <linmiaohe@huawei.com>,
Al Viro <viro@zeniv.linux.org.uk>, Yu Zhao <yuzhao@google.com>,
Roman Gushchin <roman.gushchin@linux.dev>,
Mateusz Guzik <mjguzik@gmail.com>,
Matthew Wilcox <willy@infradead.org>,
Baolin Wang <baolin.wang@linux.alibaba.com>,
Aboorva Devarajan <aboorvad@linux.ibm.com>,
David Carlier <devnexen@gmail.com>,
Josh Law <objecting@objecting.org>,
linux-mm@kvack.org
Subject: Re: [PATCH v21 0/6] Hierarchical Percpu Counters for RSS
Date: Thu, 3 Sep 2026 10:18:23 -0700 [thread overview]
Message-ID: <apmrfy5zsjmWMNj4@linux.dev> (raw)
In-Reply-To: <20260901182857.26690-1-mathieu.desnoyers@efficios.com>
On Tue, Sep 01, 2026 at 02:28:45PM -0400, Mathieu Desnoyers wrote:
> Hi Andrew,
>
> Here is the hierarchical percpu counters for RSS accounting series
> rebased on top of v7.3-rc1. It includes small bootup fixes which were
> needed to fix bootup sequence on specific architectures, and a rename of
> the test config option to include "KUNIT_".
>
> This aims at replacing the prior version of the series you had
> in mm.
>
> As a reminder, the goal here is to provide more precise RSS counters
> through /proc. A future step would be to also use these counters to
> speed up the OOM killer task selection when OOM is triggered by
> memcg. In whole-machine OOM situations, latency introduced by the
> OOM killer task selection may not be too much of an issue, but for
> memcg, where cgroups may routinely depend on the OOM killer, the
> acceptable latency tradeoff is quite different.
>
Hi Mathieu, can you please comment on the Sashiko's findings [1]?
Worth addressing or not?
[1] https://sashiko.dev/#/patchset/20260901182857.26690-1-mathieu.desnoyers%40efficios.com
next prev parent reply other threads:[~2026-09-03 17:18 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-09-01 18:28 [PATCH v21 0/6] Hierarchical Percpu Counters for RSS Mathieu Desnoyers
2026-09-01 18:28 ` [PATCH v21 1/6] lib: introduce hierarchical per-cpu counters Mathieu Desnoyers
2026-09-10 12:24 ` David Hildenbrand (Arm)
2026-09-11 16:30 ` Mathieu Desnoyers
2026-09-01 18:28 ` [PATCH v21 2/6] lib: test " Mathieu Desnoyers
2026-09-01 18:28 ` [PATCH v21 3/6] mm: improve RSS counter approximation accuracy for proc interfaces Mathieu Desnoyers
2026-09-01 18:28 ` [PATCH v21 4/6] mm: reorder mm_struct flexible array to place mm_cpumask first Mathieu Desnoyers
2026-09-01 18:28 ` [PATCH v21 5/6] init: move percpu_counter_tree_subsystem_init() earlier in boot Mathieu Desnoyers
2026-09-01 18:28 ` [PATCH v21 6/6] lib: inline percpu_counter_tree_items_size with boot-safety sentinel Mathieu Desnoyers
2026-09-03 17:18 ` Shakeel Butt [this message]
2026-09-03 19:09 ` [PATCH v21 0/6] Hierarchical Percpu Counters for RSS Mathieu Desnoyers
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