From: Jianyue Wu <wujianyue000@gmail.com>
To: akpm@linux-foundation.org
Cc: shakeel.butt@linux.dev, hannes@cmpxchg.org, mhocko@kernel.org,
roman.gushchin@linux.dev, muchun.song@linux.dev,
linux-mm@kvack.org, cgroups@vger.kernel.org,
linux-kernel@vger.kernel.org, inwardvessel@gmail.com
Subject: Re: [PATCH v4 1/1] mm: optimize stat output for 11% sys time reduce
Date: Fri, 23 Jan 2026 23:06:07 +0800 [thread overview]
Message-ID: <CAJxJ_jjn0i9pEOTXJUS=WTLAde-6-YwdQyijHvZ16nXpmQ2JNw@mail.gmail.com> (raw)
In-Reply-To: <20260123150108.43443-2-wujianyue000@gmail.com>
On Fri, Jan 23, 2026 at 11:01 PM Jianyue Wu <wujianyue000@gmail.com> wrote:
>
> Replace seq_buf_printf() calls in memcg stat formatting with a
> lightweight helper function and replace seq_printf() in numa stat
> output with direct seq operations to avoid printf format parsing
> overhead.
Seems I still need to add optimization for memcg_numa_stat_show(), though
the change there looks a bit complex, otherwise it didn't get enough perf gain..
prev parent reply other threads:[~2026-01-23 15:06 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-01-08 9:37 [PATCH] " Jianyue Wu
2026-01-08 19:10 ` Andrew Morton
2026-01-08 22:49 ` Roman Gushchin
2026-01-08 23:52 ` Jiany Wu
2026-01-08 23:56 ` Jiany Wu
2026-01-10 4:22 ` [PATCH v2] " Jianyue Wu
2026-01-10 23:33 ` Andrew Morton
2026-01-11 4:37 ` Jianyue Wu
2026-01-13 0:23 ` Shakeel Butt
2026-01-13 0:29 ` Shakeel Butt
2026-01-22 11:42 ` [PATCH v3] " Jianyue Wu
2026-01-22 17:13 ` Andrew Morton
2026-01-22 21:12 ` Shakeel Butt
2026-01-23 1:07 ` Jianyue Wu
2026-01-23 8:14 ` JP Kobryn
2026-01-23 13:24 ` Jianyue Wu
2026-01-23 15:01 ` [PATCH v4 0/1] mm: memcg: optimize stat output to reduce printf overhead Jianyue Wu
2026-01-23 15:01 ` [PATCH v4 1/1] mm: optimize stat output for 11% sys time reduce Jianyue Wu
2026-01-23 15:06 ` Jianyue Wu [this message]
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