cpu-lock

Lock a terminal command to the efficiency or performance cores on a big.LITTLE ARM processor (Designed for Apple Silicon).

Usage

Download the precompiled binary from the releases and run it in the terminal like so: ./cpulock -c "your command here"

Available command line options are:

    -e           : lock command to effeciency cores (default)
    -p           : lock command to performance cores
    -l <string>  : set command launch path (default is "/bin/bash")
    -c <string>  : insert command to run
    -h           : help

If you would like to add the binary to your usr/local/bin/, you may run the following: sudo cp ./cpulock /usr/local/bin

Example

In testing ./cpulock wih my M1cpufreq command:

./cpufreq -ec "M1cpufreq -m" (which locked the script to the M1 effciiency cores) outputted 2064 mHz

./cpufreq -pc "M1cpufreq -m" (which locked the script to the M1 performance cores) outputted 3090 mHz

These outputs fall in line with the description of the maximum efficiency and performance core clock speeds on the M1 CPU.

Known Issues

Locking commands that constantly output data, such as powermetrics, cannot be stopped using control-c. The only way to stop the command is to close the terminal window it's being ran in. This issue is crrently under investigation.

Bugs and Issues

If you can't diagnose the problem yourself, feel free to open an Issue. I'll try to figure out what's going on as soon as possible.