https://blog.mygraphql.com/zh/tags/%E5%8A%A8%E6%80%81%E8%B0%83%E9%A2%91/ Recent content in 动态调频 on Mark 的滿紙方糖言 Hugo -- gohugo.io zh labile.zhu@gmail.com (Mark Zhu) labile.zhu@gmail.com (Mark Zhu) Mark Zhu ©2026, All Rights Reserved Wed, 29 Jun 2022 23:12:15 +0800 https://blog.mygraphql.com/zh/notes/low-tec/kernel/cpu-frequency/ Wed, 29 Jun 2022 23:12:15 +0800 labile.zhu@gmail.com (Mark Zhu) Wed, 29 Jun 2022 23:12:15 +0800 https://blog.mygraphql.com/zh/notes/low-tec/kernel/cpu-frequency/ <p><img src="https://blog.mygraphql.com/zh/notes/low-tec/kernel/cpu-frequency/index.assets/2018-02-20_2355-16564669211492.jpg" alt="2018-02-20_2355"></p> <p>目录：</p> <ul> <li><a href="https://blog.mygraphql.com/zh/notes/low-tec/kernel/cpu-frequency/#%e4%b8%ba%e4%bd%95%e6%9c%89%e6%9c%ac%e6%96%87">为何有本文</a></li> <li><a href="https://blog.mygraphql.com/zh/notes/low-tec/kernel/cpu-frequency/#%e4%bb%80%e4%b9%88%e6%98%af%e5%8a%a8%e6%80%81-cpu-%e9%a2%91%e7%8e%87">什么是动态 CPU 频率</a> <ul> <li><a href="https://blog.mygraphql.com/zh/notes/low-tec/kernel/cpu-frequency/#%e4%bb%80%e4%b9%88%e6%98%af-p-state">什么是 p-state</a></li> </ul> </li> <li><a href="https://blog.mygraphql.com/zh/notes/low-tec/kernel/cpu-frequency/#linux-cpu-%e6%80%a7%e8%83%bd%e4%bc%b8%e7%bc%a9cpu-performance-scaling">Linux CPU 性能伸缩(CPU performance scaling)</a> <ul> <li><a href="https://blog.mygraphql.com/zh/notes/low-tec/kernel/cpu-frequency/#cpufreq-policycpu-%e9%a2%91%e7%8e%87%e7%bc%a9%e6%94%be%e7%ad%96%e7%95%a5">CPUFreq Policy(CPU 频率缩放策略)</a></li> <li><a href="https://blog.mygraphql.com/zh/notes/low-tec/kernel/cpu-frequency/#cpufreq-policy-%e7%9a%84-sysfs-%e6%96%87%e4%bb%b6%e6%8e%a5%e5%8f%a3">CPUFreq Policy 的 sysfs 文件接口</a> <ul> <li><a href="https://blog.mygraphql.com/zh/notes/low-tec/kernel/cpu-frequency/#policy-%e9%80%9a%e7%94%a8%e5%b1%9e%e6%80%a7">policy 通用属性</a></li> </ul> </li> <li><a href="https://blog.mygraphql.com/zh/notes/low-tec/kernel/cpu-frequency/#%e9%80%9a%e7%94%a8%e7%9a%84-scaling-governor">通用的 Scaling Governor</a> <ul> <li><a href="https://blog.mygraphql.com/zh/notes/low-tec/kernel/cpu-frequency/#performance---scaling-governor"><code>performance</code> - Scaling Governor</a></li> <li><a href="https://blog.mygraphql.com/zh/notes/low-tec/kernel/cpu-frequency/#powersave---scaling-governor"><code>powersave</code> - Scaling Governor</a></li> </ul> </li> <li><a href="https://blog.mygraphql.com/zh/notes/low-tec/kernel/cpu-frequency/#%e9%9d%9e-intel-cpu-%e7%9a%84-frequency-boost-support">非 Intel CPU 的 Frequency Boost Support</a> <ul> <li><a href="https://blog.mygraphql.com/zh/notes/low-tec/kernel/cpu-frequency/#%e9%9d%9e-intel-cpu-%e7%9a%84-boost-%e7%9a%84-sysfs-%e6%96%87%e4%bb%b6%e6%8e%a5%e5%8f%a3">非 Intel CPU 的 boost 的 sysfs 文件接口</a></li> </ul> </li> </ul> </li> <li><a href="https://blog.mygraphql.com/zh/notes/low-tec/kernel/cpu-frequency/#intel-cpu-%e7%9a%84-scaling-driver">Intel CPU 的 Scaling Driver</a> <ul> <li><a href="https://blog.mygraphql.com/zh/notes/low-tec/kernel/cpu-frequency/#%e6%93%8d%e4%bd%9c%e6%a8%a1%e5%bc%8f-operation-modes">操作模式 (Operation Modes)</a> <ul> <li><a href="https://blog.mygraphql.com/zh/notes/low-tec/kernel/cpu-frequency/#active-mode">Active Mode</a> <ul> <li><a href="https://blog.mygraphql.com/zh/notes/low-tec/kernel/cpu-frequency/#active-mode-%e4%b8%94%e5%bc%80%e5%90%af-hwp">Active Mode 且开启 HWP</a> <ul> <li><a href="https://blog.mygraphql.com/zh/notes/low-tec/kernel/cpu-frequency/#hwp--performance">HWP + <code>performance</code></a></li> <li><a href="https://blog.mygraphql.com/zh/notes/low-tec/kernel/cpu-frequency/#hwp--powersave">HWP + <code>powersave</code></a></li> </ul> </li> <li><a href="https://blog.mygraphql.com/zh/notes/low-tec/kernel/cpu-frequency/#active-mode-%e4%b8%94%e7%a6%81%e7%94%a8-hwp">Active Mode 且禁用 HWP</a></li> </ul> </li> <li><a href="https://blog.mygraphql.com/zh/notes/low-tec/kernel/cpu-frequency/#passive-mode">Passive Mode</a></li> </ul> </li> <li><a href="https://blog.mygraphql.com/zh/notes/low-tec/kernel/cpu-frequency/#turbo-p-states-support">Turbo P-states Support</a> <ul> <li><a href="https://blog.mygraphql.com/zh/notes/low-tec/kernel/cpu-frequency/#sysfs-%e4%b8%ad%e7%9a%84-no_turbo-%e5%b1%9e%e6%80%a7"><code>sysfs</code> 中的 <code>no_turbo</code> 属性</a></li> </ul> </li> <li><a href="https://blog.mygraphql.com/zh/notes/low-tec/kernel/cpu-frequency/#intel_pstate-%e7%9a%84-sysfs-%e9%85%8d%e7%bd%ae">intel_pstate 的 sysfs 配置</a></li> <li><a href="https://blog.mygraphql.com/zh/notes/low-tec/kernel/cpu-frequency/#global-attributes">Global Attributes</a></li> </ul> </li> <li><a href="https://blog.mygraphql.com/zh/notes/low-tec/kernel/cpu-frequency/#%e5%ae%9e%e6%97%b6%e7%9b%91%e6%8e%a7-cpu-%e5%ae%9e%e9%99%85%e9%a2%91%e7%8e%87">实时监控 CPU 实际频率</a> <ul> <li><a href="https://blog.mygraphql.com/zh/notes/low-tec/kernel/cpu-frequency/#turbostat">turbostat</a></li> <li><a href="https://blog.mygraphql.com/zh/notes/low-tec/kernel/cpu-frequency/#cpupower">cpupower</a></li> <li><a href="https://blog.mygraphql.com/zh/notes/low-tec/kernel/cpu-frequency/#%e5%86%85%e6%a0%b8%e6%97%a5%e5%bf%97">内核日志</a> <ul> <li><a href="https://blog.mygraphql.com/zh/notes/low-tec/kernel/cpu-frequency/#hwp-%e6%98%af%e5%90%a6%e5%bc%80%e5%90%af">HWP 是否开启</a></li> </ul> </li> </ul> </li> <li><a href="https://blog.mygraphql.com/zh/notes/low-tec/kernel/cpu-frequency/#%e9%9d%99%e6%80%81%e9%85%8d%e7%bd%ae">静态配置</a></li> </ul> <h2 id="为何有本文">为何有本文</h2> <p>很多人知道 CPU 频率会影响 CPU 性能，也知道频率会动态变化，且知道 Linux 有 performance/powersave 两种频率控制策略。但很少人知道背后的软件原理，更少人知道如何调优策略，和监控实际 CPU 频率。本文想聊聊这些。</p> Mark Zhu performance hyper-threading 超线程 hardware 动态调频 turbo-boost p-state https://blog.mygraphql.com/zh/notes/hw/hyper-threading/ Sun, 26 Jun 2022 23:12:15 +0800 labile.zhu@gmail.com (Mark Zhu) Sun, 26 Jun 2022 23:12:15 +0800 https://blog.mygraphql.com/zh/notes/hw/hyper-threading/ <p><img src="https://blog.mygraphql.com/zh/notes/hw/hyper-threading/index.assets/image-20220619120147326.png" alt="image-20220619120147326"></p> <h2 id="引">引</h2> <p>性能测试、压力测试、业务系统性能容量评估。这 3 件事，可以认为是大部分程序员/软件开发从业者都需要面对的事。但，奇怪的是，很多人花了很多时间去做完成这些<strong>工作任务</strong>，却很少有人有计划地、系统地花时间去学习和研究相关的知识。</p> Mark Zhu performance hyper-threading 超线程 CPU利用率 hardware 动态调频 turbo-boost