mirror of https://github.com/bcicen/ctop.git
47 lines
976 B
Go
47 lines
976 B
Go
//go:build linux
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// +build linux
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package collector
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import (
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linuxproc "github.com/c9s/goprocinfo/linux"
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)
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var sysMemTotal = getSysMemTotal()
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const (
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clockTicksPerSecond uint64 = 100
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nanoSecondsPerSecond = 1e9
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)
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func getSysMemTotal() int64 {
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stat, err := linuxproc.ReadMemInfo("/proc/meminfo")
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if err != nil {
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log.Errorf("error reading system stats: %s", err)
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return 0
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}
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return int64(stat.MemTotal * 1024)
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}
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// return cumulative system cpu usage in nanoseconds
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func getSysCPUUsage() uint64 {
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stat, err := linuxproc.ReadStat("/proc/stat")
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if err != nil {
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log.Errorf("error reading system stats: %s", err)
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return 0
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}
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sum := stat.CPUStatAll.User +
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stat.CPUStatAll.Nice +
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stat.CPUStatAll.System +
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stat.CPUStatAll.Idle +
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stat.CPUStatAll.IOWait +
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stat.CPUStatAll.IRQ +
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stat.CPUStatAll.SoftIRQ +
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stat.CPUStatAll.Steal +
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stat.CPUStatAll.Guest +
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stat.CPUStatAll.GuestNice
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return (sum * nanoSecondsPerSecond) / clockTicksPerSecond
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}
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