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Tue, 18 Mar 2025 09:42:45 -0700 (PDT) Date: Tue, 18 Mar 2025 12:42:43 -0400 From: Johannes Weiner To: Hao Jia Cc: akpm@linux-foundation.org, tj@kernel.org, corbet@lwn.net, mhocko@kernel.org, roman.gushchin@linux.dev, shakeel.butt@linux.dev, muchun.song@linux.dev, mkoutny@suse.com, cgroups@vger.kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org, Hao Jia Subject: Re: [PATCH 1/2] mm: vmscan: Split proactive reclaim statistics from direct reclaim statistics Message-ID: <20250318164243.GA1867495@cmpxchg.org> References: <20250318075833.90615-1-jiahao.kernel@gmail.com> <20250318075833.90615-2-jiahao.kernel@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20250318075833.90615-2-jiahao.kernel@gmail.com> On Tue, Mar 18, 2025 at 03:58:32PM +0800, Hao Jia wrote: > From: Hao Jia > > In proactive memory reclaim scenarios, it is necessary to > accurately track proactive reclaim statistics to dynamically > adjust the frequency and amount of memory being reclaimed > proactively. Currently, proactive reclaim is included in > direct reclaim statistics, which can make these > direct reclaim statistics misleading. > > Therefore, separate proactive reclaim memory from the > direct reclaim counters by introducing new counters: > pgsteal_proactive, pgdemote_proactive, and pgscan_proactive, > to avoid confusion with direct reclaim. > > Signed-off-by: Hao Jia This is indeed quite useful. Acked-by: Johannes Weiner