README
¶
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
Documentation
¶
Index ¶
Examples ¶
Constants ¶
This section is empty.
Variables ¶
This section is empty.
Functions ¶
func ECoreCache ¶ added in v0.1.4
ECoreCacheSize requires darwin/arm64
Example ¶
l1inst, l1data, l2 := ECoreCache() fmt.Println(l1inst, l1data, l2)
Output:
func ECoreCount ¶ added in v0.1.1
func ECoreCount() int
ECoreCount requires darwin/arm64
Example ¶
value := ECoreCount() fmt.Println(value)
Output:
func ECoreGHz ¶
func ECoreGHz() float64
ECoreGHz requires darwin/arm64
Example ¶
value := ECoreGHz() fmt.Println(value)
Output:
func ECoreHz ¶
func ECoreHz() uint64
ECoreHZ requires darwin/arm64
Example ¶
value := ECoreHz() fmt.Println(value)
Output:
func IsAppleSilicon ¶
func IsAppleSilicon() bool
IsAppleSilicon return false on this platform.
Example ¶
value := IsAppleSilicon() fmt.Println(value)
Output:
func ModelName ¶ added in v0.1.4
func ModelName() string
ModelName requires darwin/arm64
Example ¶
value := ModelName() fmt.Println(value)
Output:
func PCoreCache ¶ added in v0.1.4
PCoreCacheSize requires darwin/arm64
Example ¶
l1inst, l1data, l2 := PCoreCache() fmt.Println(l1inst, l1data, l2)
Output:
func PCoreCount ¶ added in v0.1.1
func PCoreCount() int
PCoreCount requires darwin/arm64
Example ¶
value := PCoreCount() fmt.Println(value)
Output:
Types ¶
This section is empty.
Source Files