Support #657
Updated by Daniel Curtis over 8 years ago
Being able to scale up or down the CPU speed for my laptop is great for when I need to conserve battery life or get better performance out of my laptop when I need it. This is a short guide on using cpupower to control CPU scaling on Arch Linux. h2. Prepare the system * Make sure the system is up to date: <pre> sudo pacman -Syu </pre> h2. Install cpupower * Install cpupower: <pre> sudo pacman -S cpupower </pre> * Start and enable the cpupower service at boot: <pre> sudo systemctl enable cpupower.service sudo systemctl start cpupower.service </pre> * Show the current CPU information: <pre> cpupower frequency-info </pre> #* _Example output_: <pre> analyzing CPU 0: driver: powernow-k8 CPUs which run at the same hardware frequency: 0 1 CPUs which need to have their frequency coordinated by software: 0 1 maximum transition latency: 107 us. hardware limits: 800 MHz - 2.00 GHz available frequency steps: 2.00 GHz, 1.80 GHz, 1.60 GHz, 800 MHz available cpufreq governors: userspace, ondemand, performance current policy: frequency should be within 800 MHz and 2.00 GHz. The governor "userspace" may decide which speed to use within this range. current CPU frequency is 800 MHz. boost state support: Supported: no Active: no </pre> * Change the CPU governor: <pre> sudo cpupower frequency-set -g performance ondemand </pre> * Speed up the CPU: <pre> sudo cpupower frequency-set -f 2.00 GHz </pre> h2. Resources * https://wiki.archlinux.org/index.php/CPU_frequency_scaling