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mirror of https://github.com/shirou/gopsutil.git synced 2025-05-08 19:29:25 +08:00
Seth Hoenig 8617ff654a cpu: add frequency support for apple silicon m1/m2 cpus
This PR adds support for reading the frequency of Apple Silicon
M1/M2 CPUs. We do so by reading the values out of the IOKit
framework, as a few other projects have now demonstrated to be
possible. This requires the use of CGO. The library provides a
convenience IsAppleSilicon() guard to detect whether the values
can be read.

Currently gopsutil does not support the big.LITTLE CPU architectures
(i think?) - in fact the P and E cores have different max frequencies.
For now, just read the P core frequency. The E core data is readily
available if we want to read it in the future.

Closes #1000

Small example program

```go
package main

import (
        "fmt"

        "github.com/shoenig/go-m1cpu"

        "github.com/shirou/gopsutil/v3/cpu"
)

func main() {
        fmt.Println("is Apple Silicon:", m1cpu.IsAppleSilicon())
        fmt.Println("model name", m1cpu.ModelName())
        fmt.Println("pCore GHz", m1cpu.PCoreGHz())
        fmt.Println("eCore GHz", m1cpu.ECoreGHz())
        fmt.Println("pCore Hz", m1cpu.PCoreHz())
        fmt.Println("eCore Hz", m1cpu.ECoreHz())

        fmt.Println("----- gopsutil ----")

        infos, err := cpu.Info()
        if err != nil {
                panic(err)
        }

        for _, info := range infos {
                fmt.Println("info.Mhz", info.Mhz)
        }
}
```

```shell
go run main.go
is Apple Silicon: true
model name Apple M2 Pro
pCore GHz 3.504
eCore GHz 2.424
pCore Hz 3504000000
eCore Hz 2424000000
----- gopsutil ----
info.Mhz 3.504e+09
```
2023-03-27 21:17:12 -05:00

17 lines
416 B
Modula-2

module github.com/shirou/gopsutil/v3
go 1.15
require (
github.com/google/go-cmp v0.5.9
github.com/lufia/plan9stats v0.0.0-20211012122336-39d0f177ccd0
github.com/power-devops/perfstat v0.0.0-20210106213030-5aafc221ea8c
github.com/shoenig/go-m1cpu v0.1.4
github.com/stretchr/testify v1.8.2
github.com/tklauser/go-sysconf v0.3.11
github.com/yusufpapurcu/wmi v1.2.2
golang.org/x/sys v0.6.0
)
retract v3.22.11