41 lines
1000 B
Go
41 lines
1000 B
Go
package libpod
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import (
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"fmt"
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"unsafe"
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"github.com/containers/podman/v4/libpod/define"
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"golang.org/x/sys/unix"
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)
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func (r *Runtime) setPlatformHostInfo(info *define.HostInfo) error {
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return nil
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}
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func timeToPercent(time uint64, total uint64) float64 {
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return 100.0 * float64(time) / float64(total)
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}
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// getCPUUtilization Returns a CPUUsage object that summarizes CPU
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// usage for userspace, system, and idle time.
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func getCPUUtilization() (*define.CPUUsage, error) {
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buf, err := unix.SysctlRaw("kern.cp_time")
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if err != nil {
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return nil, fmt.Errorf("reading sysctl kern.cp_time: %w", err)
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}
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var total uint64 = 0
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var times [unix.CPUSTATES]uint64
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for i := 0; i < unix.CPUSTATES; i++ {
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val := *(*uint64)(unsafe.Pointer(&buf[8*i]))
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times[i] = val
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total += val
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}
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return &define.CPUUsage{
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UserPercent: timeToPercent(times[unix.CP_USER], total),
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SystemPercent: timeToPercent(times[unix.CP_SYS], total),
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IdlePercent: timeToPercent(times[unix.CP_IDLE], total),
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}, nil
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}
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