https://github.com/shoenig/go-m1cpu

Library for inspecting Apple Silicon CPUs in Go
https://github.com/shoenig/go-m1cpu

apple cpu ghz go golang library m1 m2 mac macos mhz osx performance speed

Last synced: over 1 year ago
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Library for inspecting Apple Silicon CPUs in Go

• Host: GitHub
• URL: https://github.com/shoenig/go-m1cpu
• Owner: shoenig
• License: mpl-2.0
• Created: 2023-03-23T05:39:07.000Z (over 3 years ago)
• Default Branch: main
• Last Pushed: 2024-05-01T12:02:49.000Z (about 2 years ago)
• Last Synced: 2025-03-19T01:41:39.095Z (over 1 year ago)
• Topics: apple, cpu, ghz, go, golang, library, m1, m2, mac, macos, mhz, osx, performance, speed
• Language: Go
• Homepage:
• Size: 32.2 KB
• Stars: 10
• Watchers: 2
• Forks: 5
• Open Issues: 4
• Metadata Files:
  • Readme: README.md
  • Contributing: .github/CONTRIBUTING.md
  • License: LICENSE
  • Code of conduct: .github/CODE_OF_CONDUCT.md
  • Security: .github/SECURITY.md

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README

          
# m1cpu

[![Go Reference](https://pkg.go.dev/badge/github.com/shoenig/go-m1cpu.svg)](https://pkg.go.dev/github.com/shoenig/go-m1cpu)

[![MPL License](https://img.shields.io/github/license/shoenig/go-m1cpu?color=g&style=flat-square)](https://github.com/shoenig/go-m1cpu/blob/main/LICENSE)

[![Run CI Tests](https://github.com/shoenig/go-m1cpu/actions/workflows/ci.yaml/badge.svg)](https://github.com/shoenig/go-m1cpu/actions/workflows/ci.yaml)

The `go-m1cpu` module is a library for inspecting Apple Silicon CPUs in Go.

Use the `m1cpu` Go package for looking up the CPU frequency for Apple M1 and M2 CPUs.

# Install

```shell

go get github.com/shoenig/go-m1cpu@latest

```

# CGO

This package requires the use of [CGO](https://go.dev/blog/cgo).

Extracting the CPU properties is done via Apple's [IOKit](https://developer.apple.com/documentation/iokit?language=objc)

framework, which is accessible only through system C libraries.

# Example

Simple Go program to print Apple Silicon M1/M2 CPU speeds.

```go

package main

import (

	"fmt"

	"github.com/shoenig/go-m1cpu"

)

func main() {

	fmt.Println("Apple Silicon", m1cpu.IsAppleSilicon())

	fmt.Println("pCore GHz", m1cpu.PCoreGHz())

	fmt.Println("eCore GHz", m1cpu.ECoreGHz())

	fmt.Println("pCore Hz", m1cpu.PCoreHz())

	fmt.Println("eCore Hz", m1cpu.ECoreHz())

}

```

Using `go test` to print out available information.

```

➜ go test -v -run Show

=== RUN   Test_Show

    cpu_test.go:42: pCore Hz 3504000000

    cpu_test.go:43: eCore Hz 2424000000

    cpu_test.go:44: pCore GHz 3.504

    cpu_test.go:45: eCore GHz 2.424

    cpu_test.go:46: pCore count 8

    cpu_test.go:47: eCoreCount 4

    cpu_test.go:50: pCore Caches 196608 131072 16777216

    cpu_test.go:53: eCore Caches 131072 65536 4194304

--- PASS: Test_Show (0.00s)

```

# License

Open source under the [MPL](LICENSE)