135 lines
3.1 KiB
Go
135 lines
3.1 KiB
Go
// +build freebsd
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package cpu
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import (
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"fmt"
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"regexp"
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"strconv"
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"strings"
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common "github.com/influxdb/tivan/plugins/system/ps/common"
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)
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// sys/resource.h
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const (
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CPUser = 0
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CPNice = 1
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CPSys = 2
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CPIntr = 3
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CPIdle = 4
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CPUStates = 5
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)
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// time.h
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const (
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ClocksPerSec = 128
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)
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func CPUTimes(percpu bool) ([]CPUTimesStat, error) {
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var ret []CPUTimesStat
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var sysctlCall string
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var ncpu int
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if percpu {
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sysctlCall = "kern.cp_times"
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ncpu, _ = CPUCounts(true)
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} else {
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sysctlCall = "kern.cp_time"
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ncpu = 1
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}
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cpuTimes, err := common.DoSysctrl(sysctlCall)
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if err != nil {
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return ret, err
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}
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for i := 0; i < ncpu; i++ {
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offset := CPUStates * i
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user, err := strconv.ParseFloat(cpuTimes[CPUser+offset], 64)
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if err != nil {
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return ret, err
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}
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nice, err := strconv.ParseFloat(cpuTimes[CPNice+offset], 64)
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if err != nil {
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return ret, err
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}
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sys, err := strconv.ParseFloat(cpuTimes[CPSys+offset], 64)
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if err != nil {
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return ret, err
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}
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idle, err := strconv.ParseFloat(cpuTimes[CPIdle+offset], 64)
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if err != nil {
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return ret, err
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}
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intr, err := strconv.ParseFloat(cpuTimes[CPIntr+offset], 64)
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if err != nil {
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return ret, err
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}
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c := CPUTimesStat{
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User: float64(user / ClocksPerSec),
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Nice: float64(nice / ClocksPerSec),
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System: float64(sys / ClocksPerSec),
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Idle: float64(idle / ClocksPerSec),
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Irq: float64(intr / ClocksPerSec),
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}
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if !percpu {
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c.CPU = "cpu-total"
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} else {
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c.CPU = fmt.Sprintf("cpu%d", i)
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}
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ret = append(ret, c)
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}
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return ret, nil
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}
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// Returns only one CPUInfoStat on FreeBSD
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func CPUInfo() ([]CPUInfoStat, error) {
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filename := "/var/run/dmesg.boot"
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lines, _ := common.ReadLines(filename)
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var ret []CPUInfoStat
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c := CPUInfoStat{}
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for _, line := range lines {
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if matches := regexp.MustCompile(`CPU:\s+(.+) \(([\d.]+).+\)`).FindStringSubmatch(line); matches != nil {
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c.ModelName = matches[1]
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t, err := strconv.ParseFloat(matches[2], 64)
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if err != nil {
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return ret, nil
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}
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c.Mhz = t
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} else if matches := regexp.MustCompile(`Origin = "(.+)" Id = (.+) Family = (.+) Model = (.+) Stepping = (.+)`).FindStringSubmatch(line); matches != nil {
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c.VendorID = matches[1]
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c.Family = matches[3]
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c.Model = matches[4]
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t, err := strconv.ParseInt(matches[5], 10, 32)
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if err != nil {
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return ret, nil
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}
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c.Stepping = int32(t)
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} else if matches := regexp.MustCompile(`Features=.+<(.+)>`).FindStringSubmatch(line); matches != nil {
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for _, v := range strings.Split(matches[1], ",") {
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c.Flags = append(c.Flags, strings.ToLower(v))
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}
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} else if matches := regexp.MustCompile(`Features2=[a-f\dx]+<(.+)>`).FindStringSubmatch(line); matches != nil {
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for _, v := range strings.Split(matches[1], ",") {
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c.Flags = append(c.Flags, strings.ToLower(v))
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}
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} else if matches := regexp.MustCompile(`Logical CPUs per core: (\d+)`).FindStringSubmatch(line); matches != nil {
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// FIXME: no this line?
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t, err := strconv.ParseInt(matches[1], 10, 32)
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if err != nil {
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return ret, nil
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}
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c.Cores = int32(t)
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}
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}
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return append(ret, c), nil
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}
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