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[195.37.157.6]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-49996188217sm495557495e9.13.2026.08.18.00.05.06 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 18 Aug 2026 00:05:06 -0700 (PDT) From: Doehyun Baek To: Alex Shi , Yanteng Si Cc: Doehyun Baek , Dongliang Mu , SJ Park , Jonathan Corbet , Shuah Khan , damon@lists.linux.dev, linux-mm@kvack.org, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v8 2/7] docs/zh_CN: add DAMON_STAT usage translation Date: Tue, 18 Aug 2026 07:03:44 +0000 Message-ID: <20260818070358.455768-3-doehyunbaek@gmail.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260818070358.455768-1-doehyunbaek@gmail.com> References: <20260818070358.455768-1-doehyunbaek@gmail.com> Precedence: bulk X-Mailing-List: linux-doc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Translate .../admin-guide/mm/damon/stat.rst into Chinese. Update the translation through commit c9380cdd949d ("Docs/{admin-guide,mm}/damon: fix DAMON documentation details"). Signed-off-by: Doehyun Baek --- .../zh_CN/admin-guide/mm/damon/stat.rst | 94 +++++++++++++++++++ 1 file changed, 94 insertions(+) create mode 100644 Documentation/translations/zh_CN/admin-guide/mm/damon/stat.rst diff --git a/Documentation/translations/zh_CN/admin-guide/mm/damon/stat.rst b/Documentation/translations/zh_CN/admin-guide/mm/damon/stat.rst new file mode 100644 index 000000000000..129748a5ea1f --- /dev/null +++ b/Documentation/translations/zh_CN/admin-guide/mm/damon/stat.rst @@ -0,0 +1,94 @@ +.. SPDX-License-Identifier: GPL-2.0 +.. include:: ../../../disclaimer-zh_CN.rst + +:Original: Documentation/admin-guide/mm/damon/stat.rst + +:翻译: + + Doehyun Baek + +==================== +数据访问监测结果统计 +==================== + +数据访问监测结果统计（DAMON_STAT）是一个静态内核模块，旨在用于简单的 +访问模式监测。它使用 DAMON 监测系统整个物理内存上的访问，并提供简化的 +访问监测结果统计，即空闲时间百分位数和估计的内存带宽。 + +.. _damon_stat_monitoring_accuracy_overhead_zh_CN: + +监测精度和开销 +============== + +DAMON_STAT 使用监测间隔 +:ref:`自动调优 ` 来提高 +精度并最小化开销。它会自动调优间隔，目标是在每个快照中捕获 4 % 的 +可观测访问事件，同时将得到的采样间隔限制在最小 5 毫秒、最大 10 秒。 +在少数生产服务器系统上，它的结果是只消耗 0.x % 的单个 CPU 时间，同时 +捕获质量合理的访问模式。调优得到的间隔可以通过 +``aggr_interval_us`` :ref:`参数 ` 获取。 + +接口：模块参数 +============== + +要使用这个功能，首先应确保你的系统运行在构建时启用了 +``CONFIG_DAMON_STAT=y`` 的内核上。通过将 +``CONFIG_DAMON_STAT_ENABLED_DEFAULT`` 设置为 true，可以在构建时默认 +启用该功能。 + +为了让系统管理员在启动时和/或运行时启用或禁用它，并读取监测结果， +DAMON_STAT 提供了模块参数。下面的章节描述这些参数。 + +enabled +------- + +启用或禁用 DAMON_STAT。 + +你可以将该参数的值设置为 ``Y`` 来启用 DAMON_STAT。设置为 ``N`` 会 +禁用 DAMON_STAT。默认值由 ``CONFIG_DAMON_STAT_ENABLED_DEFAULT`` 构建 +配置选项设置。 + +请注意，该模块（damon_stat）不能与其他基于 DAMON 的专用模块同时运行。 +更多细节请参考 :ref:`DAMON 设计文档的专用模块互斥性 `。 + +.. _damon_stat_aggr_interval_us_zh_CN: + +aggr_interval_us +---------------- + +自动调优后的聚集时间间隔，单位是微秒。 + +用户可以读取 DAMON_STAT 使用的 DAMON 实例的聚集间隔。它会被 +:ref:`自动调优 `，因此该值 +会动态变化。 + +estimated_memory_bandwidth +-------------------------- + +系统的估计内存带宽消耗（字节/秒）。 + +DAMON_STAT 读取当前 DAMON 结果快照上的观测访问事件，并将其转换为以 +字节/秒为单位的内存带宽消耗估计。得到的指标通过这个只读参数向用户 +公开。由于 DAMON 使用采样，所以这只是访问强度的估计，而不是精确的 +内存带宽。 + +memory_idle_ms_percentiles +-------------------------- + +系统的逐字节空闲时间（毫秒）百分位数。 + +DAMON_STAT 基于当前 DAMON 结果快照，计算内存中每个字节到现在为止未被 +访问的时间（空闲时间）。对于访问频率（nr_accesses）大于零的区域，当前 +访问频率水平保持的时间乘以 ``-1``，就是该区域每个字节的空闲时间。如果 +某个区域的访问频率（nr_accesses）为零，则该区域保持零访问频率的时间 +（age）就是该区域每个字节的空闲时间。然后，DAMON_STAT 通过这个只读参数 +公开空闲时间值的百分位数。读取该参数会返回 101 个以毫秒为单位、用逗号 +分隔的空闲时间值。每个值分别表示第 0、第 1、第 2、第 3、……、第 99 和 +第 100 百分位的空闲时间。 + +kdamond_pid +----------- + +DAMON 线程的 PID。 + +如果 DAMON_STAT 已启用，这将成为工作线程的 PID。否则为 -1。 -- 2.43.0