History

Matt Heon d9c388e2fe Change to using gopsutil for cross-OS process ops Instead of trying to write out own code to do basic process operations (e.g. checking if a PID is still running in a multi-OS friendly manner), use shirou/gopsutil, a multi-platform library that should abstract all the complexity away. Unlike our previous approach on Windows, this one should actually work. Signed-off-by: Matt Heon <mheon@redhat.com>		2023-10-31 10:14:06 -04:00
..
.golangci.yaml	Change to using gopsutil for cross-OS process ops	2023-10-31 10:14:06 -04:00
LICENSE	Change to using gopsutil for cross-OS process ops	2023-10-31 10:14:06 -04:00
Makefile	Change to using gopsutil for cross-OS process ops	2023-10-31 10:14:06 -04:00
README.md	Change to using gopsutil for cross-OS process ops	2023-10-31 10:14:06 -04:00
cpu.go	Change to using gopsutil for cross-OS process ops	2023-10-31 10:14:06 -04:00
incompatible.go	Change to using gopsutil for cross-OS process ops	2023-10-31 10:14:06 -04:00

README.md

m1cpu

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

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

CGO

This package requires the use of CGO.

Extracting the CPU properties is done via Apple's IOKit framework, which is accessible only through system C libraries.

Example

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

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