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Life & fun · October 6, 2021

Run any command on the M1 efficiency cores

Run processes on the "Icestorm" efficiency cores of the M1 Mac chip - runbg.swift

Run any command on the M1 efficiency cores launched on October 6, 2021 with 26 votes, #1,133 of 2,933 launches that month and more than 75% of that year's launches. The site was still online in September 2026, 5 years on.

In plain words

This tool allows users to execute commands specifically on the M1 chip's efficiency cores rather than performance cores. Designed for developers and Mac users working with Apple Silicon, it enables fine-grained control over processor resource allocation. The utility is useful for testing application performance, power consumption optimization, and understanding how software behaves on different core types.

written from the facts on this page · September 2026

From the sources

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