enelog

enelog is a lightweight command-line utility for measuring CPU power consumption using Intel's RAPL (Running Average Power Limit) interface. It is implemented in C and built with CMake.

Features

• Measures CPU power usage via Intel RAPL
• Minimal codebase (single C source file)
• CMake-based build system

Build Instructions

Make sure you have CMake (version 3.22 or higher) and a C compiler installed.

git clone https://github.com/your-username/enelog.git
cd enelog
cmake -B build
cmake --build build

After building, the executable will be available at build/enelog.

Usage

./enelog [-i <interval>] [-t <timeout>] [-h]

• -i <interval>: Interval in seconds between power measurements (default: 1 second)
• -t <timeout>: Timeout in seconds after which the program exits (default: 10 seconds)

This command runs the program, which reports the CPU's power consumption using RAPL.

Note: Accessing the RAPL interface typically requires root privileges. Run the binary with sudo if necessary.

License

This project is licensed under the MIT License. See the LICENSE file for details.

Notes

• Works only on Intel processors that support RAPL
• For more information on RAPL, see the Linux powercap documentation