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Apple Silicon processors don't provide an easy way to view live power consumption. I was interested in this data while testing local LLM models.asitop is a nice and simple TUI for quickly checking current metrics, but it reads data frompowermetrics and requires root privileges.macmon uses a private macOS API to gather similar metrics (essentially the same aspowermetrics), but runs without sudo. 🎉

• 🚫 Runs without sudo
• ⚡ Real-time CPU / GPU / ANE power usage
• 📊 CPU utilization per cluster
• 💾 RAM / Swap usage
• 📈 Historical charts with average and max values
• 🌡️ Average CPU / GPU temperature
• 🎨 Switchable color themes (6 variants)
• 🪟 Can be displayed in a small window
• 🦀 Written in Rust

• Installmacmon usingbrew:

brew install macmon

• Installmacmon usingMacPorts:

sudo port install macmon

• Installmacmon usingCargo:

cargo install macmon

• Installmacmon usingNix:

nix-env -i macmon

Usage: macmon [OPTIONS] [COMMAND]Commands:  pipe   Output metricsin JSON format  debug  Print debug informationhelp   Print this message or thehelp of the given subcommand(s)Options:  -i, --interval<INTERVAL>  Update intervalin milliseconds [default: 1000]  -h, --help                 Printhelp  -V, --version              Print versionControls:  c - change color  v - switch charts view: gauge / sparkline  q - quit

You can use thepipe subcommand to output metrics in JSON format, which makes it suitable for piping into other tools or scripts. For example:

macmon pipe| jq

This command runsmacmon in "pipe" mode and sends the output tojq for pretty-printing.

You can also specify the number of samples to collect using the-s or--samples parameter (default:0, which runs indefinitely), and set the update interval in milliseconds using the-i or--interval parameter (default:1000 ms). For example:

macmon pipe -s 10 -i 500| jq

This will collect 10 samples with an update interval of 500 milliseconds.

{"timestamp":"2025-02-24T20:38:15.427569+00:00","temp": {"cpu_temp_avg":43.73614,// Celsius"gpu_temp_avg":36.95167// Celsius  },"memory": {"ram_total":25769803776,// Bytes"ram_usage":20985479168,// Bytes"swap_total":4294967296,// Bytes"swap_usage":2602434560// Bytes  },"ecpu_usage": [1181,0.082656614],// (Frequency MHz, Usage %)"pcpu_usage": [1974,0.015181795],// (Frequency MHz, Usage %)"gpu_usage": [461,0.021497859],// (Frequency MHz, Usage %)"cpu_power":0.20486385,// Watts"gpu_power":0.017451683,// Watts"ane_power":0.0,// Watts"all_power":0.22231553,// Watts"sys_power":5.876533,// Watts"ram_power":0.11635789,// Watts"gpu_ram_power":0.0009615385// Watts (not sure what it means)}

1. InstallRust toolchain

2. Clone the repo:

git clone https://github.com/vladkens/macmon.git&&cd macmon

3. Build and run:

cargo run -r

We love contributions! Whether you have ideas, suggestions, or bug reports, feel free to open an issue or submit a pull request. Your input is essential to helping us improvemacmon. 💪

macmon is distributed under the MIT License. For more details, check out the LICENSE file.

• tlkh/asitop – The original tool. Written in Python, requires sudo.
• dehydratedpotato/socpowerbud – Written in Objective-C, sudoless, no TUI.
• op06072/NeoAsitop – Written in Swift, sudoless.
• graelo/pumas – Written in Rust, requires sudo.
• context-labs/mactop – Written in Go, requires sudo.

P.S. One more thing... Monitoring your Mac's performance withmacmon is like having a personal trainer for your processor — keeping those cores in shape! 💪