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34 lines
616 B
Go
34 lines
616 B
Go
//go:build linux
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// +build linux
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package prometheus
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import (
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"sync"
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"github.com/mackerelio/go-osstat/cpu"
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)
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var cpuStatsLock sync.RWMutex
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var lastCPUTotal, lastCPUIdle uint64
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func getCPUStats() (cpuLoad float32, numCPUs uint32, err error) {
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cpuInfo, err := cpu.Get()
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if err != nil {
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return
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}
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cpuStatsLock.Lock()
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if lastCPUTotal > 0 && lastCPUTotal < cpuInfo.Total {
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cpuLoad = 1 - float32(cpuInfo.Idle-lastCPUIdle)/float32(cpuInfo.Total-lastCPUTotal)
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}
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lastCPUTotal = cpuInfo.Total
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lastCPUIdle = cpuInfo.Idle // + cpu.Iowait
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cpuStatsLock.Unlock()
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numCPUs = uint32(cpuInfo.CPUCount)
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return
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}
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