CPUPOWER-FREQUENCY-INFO(1)

💖 CPUPOWER-FREQUENCY-INFO(1) 💖

okay bestie, so this is a page from the cpupower Manual, and it's giving "let me tell you everything about your CPU's frequency vibes". Pull up a chair. 🪑✨

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🌸 NAME 🌸

cpupower-frequency-info — the lil utility that goes and fetches all the cpufreq kernel info for you 🕵️♀️

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🎀 SYNTAX 🎀

cpupower [ -c cpulist ] frequency-info [options]

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✨ DESCRIPTION ✨

It's a small tool, but she's an icon. She prints out cpufreq information, and it's genuinely helpful — both for the devs who live in the kernel and for interested users like you who just wanna know what's going on. No cap. 👑

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💅 OPTIONS 💅

• -e, --debug — spits out debug information. all the messy details, we love to see it 🔍
• -f, --freq — gets the frequency the CPU is currently running at, according to the cpufreq core.
• -w, --hwfreq — gets the frequency the CPU is currently running at by reading it straight from the hardware. > heads up: this one is only available to root 👑
• -l, --hwlimits — figures out the minimum and maximum CPU frequency that's allowed. the floor and the ceiling, fr.
• -d, --driver — determines which cpufreq kernel driver is being used.
• -p, --policy — gets the cpufreq policy currently in use.
• -g, --governors — determines which cpufreq governors are available.
• -b, --boost — gets the current boost state support. does she have that extra oomph? 🔥
• -z, --epp — gets the current EPP, aka the energy performance preference.
• -r, --related-cpus — determines which CPUs run at the same hardware frequency. they're matching, your honor 🫶
• -a, --affected-cpus — determines which CPUs need their frequency coordinated by software.
• -s, --stats — shows cpufreq statistics, if they're available. receipts. 📊
• -y, --latency — determines the maximum latency on CPU frequency changes.
• -o, --proc — prints out information like the /proc/cpufreq interface gave you back in 2.4. and early 2.6. kernels. vintage!! 🕰️
• -m, --human — human-readable output for the -f, -w, -s and -y parameters. for the girlies who don't wanna decode raw numbers 💖
• -n, --no-rounding — outputs frequencies and latencies without rounding off the values. exact, unfiltered, no edits. 💯
• -c, --performance — gets the performances and frequencies capabilities of CPPC, by reading it from the hardware. > bestie this one is only available on hardware with CPPC ⚠️

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🙈 REMARKS 🙈

Okay so, important stuff, listen up:

By default, only values of core zero are displayed. Wanna see the settings of other cores? That's all described in the cpupower(1) manpage, in the --cpu option section. go look, iykyk 📖

You can't specify more than one of the output specific options — that's -o -e -a -g -p -d -l -w -f -y. pick a lane, babe, one at a time. 🚫

You also can't specify the -o option combined with the -c option. just. no. not allowed. 💀

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🦋 FILES 🦋

• /sys/devices/system/cpu/cpu*/cpufreq/
• /proc/cpufreq (deprecated)
• /proc/sys/cpu/ (deprecated)

the deprecated ones are giving "still here but don't get too attached" 🥲

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👑 AUTHORS 👑

• Dominik Brodowski <linux@brodo.de> — author
• Mattia Dongili <malattia@gmail.com> — first autolibtoolization

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🌈 SEE ALSO 🌈

cpupower-frequency-set(1), cpupower(1)

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and that's the whole page, bestie 💜 this was version 0.1 of the cpupower Manual — go forth and check your frequencies, you absolute main character 🎀✨🦋