From: Johannes Weiner <hannes@cmpxchg.org>
To: Ye Liu <ye.liu@linux.dev>
Cc: Andrew Morton <akpm@linux-foundation.org>,
Vlastimil Babka <vbabka@suse.cz>, Ye Liu <liuye@kylinos.cn>,
Suren Baghdasaryan <surenb@google.com>,
Michal Hocko <mhocko@suse.com>,
Brendan Jackman <jackmanb@google.com>, Zi Yan <ziy@nvidia.com>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] mm/show_mem: Print totalreserve_pages in show_mem output
Date: Thu, 14 Aug 2025 10:15:13 -0400 [thread overview]
Message-ID: <20250814141513.GG115258@cmpxchg.org> (raw)
In-Reply-To: <20250814092622.24535-1-ye.liu@linux.dev>
On Thu, Aug 14, 2025 at 05:26:21PM +0800, Ye Liu wrote:
> From: Ye Liu <liuye@kylinos.cn>
>
> Add totalreserve_pages to the main show_mem output line for easier
> debugging and memory analysis. This helps developers and
> administrators quickly see how many pages are reserved by the kernel
> and not available for user allocations.
This number isn't used very widely in decision making.
For actual allocations, what matters is watermarks, lowmem_reserve,
highatomic, and cma pages - all of which are already printed out on a
per-zone basis in show_mem().
prev parent reply other threads:[~2025-08-14 14:15 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-08-14 9:26 [PATCH] mm/show_mem: Print totalreserve_pages in show_mem output Ye Liu
2025-08-14 14:15 ` Johannes Weiner [this message]
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