From: "Michal Koutný" <mkoutny@suse.com>
To: Chen Ridong <chenridong@huaweicloud.com>
Cc: Leon Huang Fu <leon.huangfu@shopee.com>,
akpm@linux-foundation.org, cgroups@vger.kernel.org,
corbet@lwn.net, hannes@cmpxchg.org, jack@suse.cz,
joel.granados@kernel.org, kyle.meyer@hpe.com,
lance.yang@linux.dev, laoar.shao@gmail.com,
linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-mm@kvack.org, mclapinski@google.com, mhocko@kernel.org,
muchun.song@linux.dev, roman.gushchin@linux.dev,
shakeel.butt@linux.dev, tj@kernel.org
Subject: Re: [PATCH mm-new v3] mm/memcontrol: Add memory.stat_refresh for on-demand stats flushing
Date: Wed, 12 Nov 2025 15:02:12 +0100 [thread overview]
Message-ID: <chffrjnr5ebky6aytx6va4lptu7mbxclmzqvzdnjwa6hrb7fzw@ewpebokeqfzs> (raw)
In-Reply-To: <2f43bdf7-5ce0-4835-9e60-39d91f637152@huaweicloud.com>
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On Wed, Nov 12, 2025 at 08:56:28AM +0800, Chen Ridong <chenridong@huaweicloud.com> wrote:
> However, this fails the LTP test quite easily. The error logs come directly from LTP. The issue
> occurs because the threshold isn’t reached, resulting in an RSS value of 0. We tried increasing the
> memory allocated by the LTP case, but that wasn’t the right solution.
You touched on a slightly different cause (other than async flushing)
-- there are other fields/stats that are quantified by (basic) page
size. I.e. I think that might need different/more central solution, e.g.
working with absolute (not relative to pagesize) thresholds if absolute
precision is needed.
Thanks,
Michal
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next prev parent reply other threads:[~2025-11-12 14:02 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-11-10 10:19 Leon Huang Fu
2025-11-10 11:28 ` Michal Hocko
2025-11-11 6:12 ` Leon Huang Fu
2025-11-10 11:52 ` Harry Yoo
2025-11-11 6:12 ` Leon Huang Fu
2025-11-10 13:50 ` Michal Koutný
2025-11-10 16:04 ` Tejun Heo
2025-11-11 6:27 ` Leon Huang Fu
2025-11-11 1:00 ` Chen Ridong
2025-11-11 6:44 ` Leon Huang Fu
2025-11-12 0:56 ` Chen Ridong
2025-11-12 14:02 ` Michal Koutný [this message]
2025-11-11 6:13 ` Leon Huang Fu
2025-11-11 18:52 ` Tejun Heo
2025-11-11 19:01 ` Michal Koutný
2025-11-11 8:10 ` Michal Hocko
2025-11-11 19:10 ` Waiman Long
2025-11-11 19:47 ` Michal Hocko
2025-11-11 20:44 ` Waiman Long
2025-11-11 21:01 ` Michal Hocko
2025-11-12 14:02 ` Michal Koutný
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