From: Muchun Song <songmuchun@bytedance.com>
To: Roman Gushchin <roman.gushchin@linux.dev>
Cc: Andrew Morton <akpm@linux-foundation.org>,
linux-mm@kvack.org, Dave Chinner <dchinner@redhat.com>,
linux-kernel@vger.kernel.org,
Kent Overstreet <kent.overstreet@gmail.com>,
Hillf Danton <hdanton@sina.com>,
Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Subject: Re: [PATCH v4 6/6] mm: shrinkers: add scan interface for shrinker debugfs
Date: Thu, 26 May 2022 11:46:23 +0800 [thread overview]
Message-ID: <Yo74Dx77MltYkMsQ@FVFYT0MHHV2J.googleapis.com> (raw)
In-Reply-To: <20220525202600.2910982-7-roman.gushchin@linux.dev>
On Wed, May 25, 2022 at 01:26:00PM -0700, Roman Gushchin wrote:
> Add a scan interface which allows to trigger scanning of a particular
> shrinker and specify memcg and numa node. It's useful for testing,
> debugging and profiling of a specific scan_objects() callback.
> Unlike alternatives (creating a real memory pressure and dropping
> caches via /proc/sys/vm/drop_caches) this interface allows to interact
> with only one shrinker at once. Also, if a shrinker is misreporting
> the number of objects (as some do), it doesn't affect scanning.
>
> Signed-off-by: Roman Gushchin <roman.gushchin@linux.dev>
Acked-by: Muchun Song <songmuchun@bytedance.com>
Thanks.
prev parent reply other threads:[~2022-05-26 3:47 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-05-25 20:25 [PATCH v4 0/6] mm: introduce shrinker debugfs interface Roman Gushchin
2022-05-25 20:25 ` [PATCH v4 1/6] mm: memcontrol: introduce mem_cgroup_ino() and mem_cgroup_get_from_ino() Roman Gushchin
2022-05-26 1:53 ` Muchun Song
2022-05-25 20:25 ` [PATCH v4 2/6] mm: shrinkers: introduce debugfs interface for memory shrinkers Roman Gushchin
2022-05-26 1:58 ` Muchun Song
2022-05-25 20:25 ` [PATCH v4 3/6] mm: shrinkers: provide shrinkers with names Roman Gushchin
2022-05-27 9:30 ` Dave Chinner
2022-05-27 18:00 ` Roman Gushchin
2022-05-25 20:25 ` [PATCH v4 4/6] mm: docs: document shrinker debugfs Roman Gushchin
2022-05-26 2:01 ` Muchun Song
2022-05-26 2:25 ` Muchun Song
2022-05-26 20:35 ` Roman Gushchin
2022-05-25 20:25 ` [PATCH v4 5/6] tools: add memcg_shrinker.py Roman Gushchin
2022-05-25 20:26 ` [PATCH v4 6/6] mm: shrinkers: add scan interface for shrinker debugfs Roman Gushchin
2022-05-26 3:46 ` Muchun Song [this message]
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