CPU Policy Manager (CPM)

A CLI utility to easily control CPU frequency policies on Linux from the terminal. After auto-cpufreq broke after an Arch update, I just decided to write my own solution, and not have it be a daemon but a utility to easily write fixed configurations. This project is still young. The help text should provide you with a general idea of its purpose.

State: incomplete, but functional.

A simple example to set the desired minimum and maximum frequency of your CPU.

sudo cpm set all freq 1.5:4.5         # GHz by default, suffixes supported, and comas ignored for convenience.
sudo cpm set all freq :3,500,000      # Only sets the max frequency, and defaults to KHz when no periods are present.
sudo cpm set all freq :3.5            # Equivalent to the above.
sudo cpm set all freq 800,000:        # Sets the minimum frequency to 0.8 GHz

Or to retrieve available governors and change the active one.

cpm get 0 gov avail
sudo cpm set all gov powersave

Or to view the current CPU frequency of all your cores.

cpm get all freq curr

You get the idea.

Here's the verbose description:

Setting Values:
cpm set <policies> <attribute> <value>

Example:
    cpm set all freq 3.0:4.5
        Sets the min and max frequency for all governors to 3.0 and 4.5

<policies> format:
    0     - A single policy number.
    0:4   - A range of policy numbers.
    0,2,5 - Specific policy number.
    all|* - Affects every policy.

<attribute> format:
    freq - CPU Frequency
    gov  - CPU Governor
    perf - CPU Performance Profile

<value> format:
    freq: <min>:<max>
        If no suffix is provided, and a period is present, defualts to GHz
        2.5:3.5 - Sets scaling min/max to 2.5 and 3.5 GHz

        If no suffix is provided, and no periods are present, defaults to KHz
        2500000:3500000 - Sets scaling min/max to 2.5/3.5 GHz

        To set only min, or only max, provide no value on the left or right.
        The inclusion of a : is mandatory however.

        :3.5 - Sets scaling max to 3.5 GHz
        2.5: - Sets scaling min to 2.5 Ghz

        Available suffixes: g, m, k, h

        :3.5g            - Sets scaling max to 3.5 GHz
        :3,500m          - Sets scaling max to 3,500 MHz        (3.5GHz)
        :3,500,000k      - Sets scaling max to 3,500,000 KHz    (3.5GHz)
        :3,500,000,000h  - Sets scaling max to 3,500,000,000 Hz (3.5GHz)

        Comas are ignored, so feel free to use them for readability.

        Suffixes can also be mixed

        2,500m:3,500,000k - Sets scaling min/max to 2.5/3.5Ghz

    gov: <governor>
        Must be a valid CPU governor. You can check available governors using
            cpm get 0 gov avail

        Then set it like this
            cpm set all gov powersave

    perf: <profile>
        Must be a valid performance profile. Get available profiles with
            cpm get 0 perf avail

        Then set it like this
            cpm set all perf balance_performance


Getting Values:
    cpm set <policies> <attribute> <value>

    <policies> format:
        0     - A single policy number.
        0:4   - A range of policy numbers.
        0,2,5 - Specific policy number.

        (all | *)   - Every policy.

    <attribute> format:
        freq - CPU Frequency
        gov  - CPU Governor
        perf - CPU Performance Profile

    <value> format:
        freq: min, max, (curr | current)
        gov:  (curr | current), (avail | available)
        perf: (curr | current), (avail | available)

        freq: min, max, (curr | current)
        gov:  (curr | current), (avail | available)
        perf: (curr | current), (avail | available)