67 lines
1.8 KiB
Markdown
67 lines
1.8 KiB
Markdown
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# m1cpu
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[](https://pkg.go.dev/github.com/shoenig/go-m1cpu)
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[](https://github.com/shoenig/go-m1cpu/blob/main/LICENSE)
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[](https://github.com/shoenig/go-m1cpu/actions/workflows/ci.yaml)
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The `go-m1cpu` module is a library for inspecting Apple Silicon CPUs in Go.
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Use the `m1cpu` Go package for looking up the CPU frequency for Apple M1 and M2 CPUs.
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# Install
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```shell
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go get github.com/shoenig/go-m1cpu@latest
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```
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# CGO
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This package requires the use of [CGO](https://go.dev/blog/cgo).
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Extracting the CPU properties is done via Apple's [IOKit](https://developer.apple.com/documentation/iokit?language=objc)
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framework, which is accessible only through system C libraries.
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# Example
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Simple Go program to print Apple Silicon M1/M2 CPU speeds.
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```go
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package main
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import (
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"fmt"
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"github.com/shoenig/go-m1cpu"
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)
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func main() {
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fmt.Println("Apple Silicon", m1cpu.IsAppleSilicon())
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fmt.Println("pCore GHz", m1cpu.PCoreGHz())
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fmt.Println("eCore GHz", m1cpu.ECoreGHz())
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fmt.Println("pCore Hz", m1cpu.PCoreHz())
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fmt.Println("eCore Hz", m1cpu.ECoreHz())
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}
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```
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Using `go test` to print out available information.
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```
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➜ go test -v -run Show
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=== RUN Test_Show
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cpu_test.go:42: pCore Hz 3504000000
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cpu_test.go:43: eCore Hz 2424000000
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cpu_test.go:44: pCore GHz 3.504
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cpu_test.go:45: eCore GHz 2.424
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cpu_test.go:46: pCore count 8
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cpu_test.go:47: eCoreCount 4
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cpu_test.go:50: pCore Caches 196608 131072 16777216
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cpu_test.go:53: eCore Caches 131072 65536 4194304
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--- PASS: Test_Show (0.00s)
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```
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# License
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Open source under the [MPL](LICENSE)
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