func (p *Processes) Gather(acc telegraf.Accumulator) error {
// Get an empty map of metric fields
fields := getEmptyFields()
// Decide if we will use 'ps' to get stats (use procfs otherwise)
usePS := true
if runtime.GOOS == "linux" {
usePS = false
}
if p.forcePS {
usePS = true
} else if p.forceProc {
usePS = false
}
// Gather stats from 'ps' or procfs
if usePS {
if err := p.gatherFromPS(fields); err != nil {
return err
}
} else {
if err := p.gatherFromProc(fields); err != nil {
return err
}
}
acc.AddGauge("processes", fields, nil)
return nil
}
func (_ *SystemStats) Gather(acc telegraf.Accumulator) error {
loadavg, err := load.Avg()
if err != nil {
return err
}
hostinfo, err := host.Info()
if err != nil {
return err
}
users, err := host.Users()
if err != nil {
return err
}
acc.AddGauge("system", map[string]interface{}{
"load1": loadavg.Load1,
"load5": loadavg.Load5,
"load15": loadavg.Load15,
"n_users": len(users),
"n_cpus": runtime.NumCPU(),
}, nil)
acc.AddCounter("system", map[string]interface{}{
"uptime": hostinfo.Uptime,
"uptime_format": format_uptime(hostinfo.Uptime),
}, nil)
return nil
}
func (s *SwapStats) Gather(acc telegraf.Accumulator) error {
swap, err := s.ps.SwapStat()
if err != nil {
return fmt.Errorf("error getting swap memory info: %s", err)
}
fieldsG := map[string]interface{}{
"total": swap.Total,
"used": swap.Used,
"free": swap.Free,
"used_percent": swap.UsedPercent,
}
fieldsC := map[string]interface{}{
"in": swap.Sin,
"out": swap.Sout,
}
acc.AddGauge("swap", fieldsG, nil)
acc.AddCounter("swap", fieldsC, nil)
return nil
}
func (s *DiskStats) Gather(acc telegraf.Accumulator) error {
// Legacy support:
if len(s.Mountpoints) != 0 {
s.MountPoints = s.Mountpoints
}
disks, err := s.ps.DiskUsage(s.MountPoints, s.IgnoreFS)
if err != nil {
return fmt.Errorf("error getting disk usage info: %s", err)
}
for _, du := range disks {
if du.Total == 0 {
// Skip dummy filesystem (procfs, cgroupfs, ...)
continue
}
tags := map[string]string{
"path": du.Path,
"fstype": du.Fstype,
}
var used_percent float64
if du.Used+du.Free > 0 {
used_percent = float64(du.Used) /
(float64(du.Used) + float64(du.Free)) * 100
}
fields := map[string]interface{}{
"total": du.Total,
"free": du.Free,
"used": du.Used,
"used_percent": used_percent,
"inodes_total": du.InodesTotal,
"inodes_free": du.InodesFree,
"inodes_used": du.InodesUsed,
}
acc.AddGauge("disk", fields, tags)
}
return nil
}
func (s *CPUStats) Gather(acc telegraf.Accumulator) error {
times, err := s.ps.CPUTimes(s.PerCPU, s.TotalCPU)
if err != nil {
return fmt.Errorf("error getting CPU info: %s", err)
}
now := time.Now()
for i, cts := range times {
tags := map[string]string{
"cpu": cts.CPU,
}
total := totalCpuTime(cts)
if s.CollectCPUTime {
// Add cpu time metrics
fieldsC := map[string]interface{}{
"time_user": cts.User,
"time_system": cts.System,
"time_idle": cts.Idle,
"time_nice": cts.Nice,
"time_iowait": cts.Iowait,
"time_irq": cts.Irq,
"time_softirq": cts.Softirq,
"time_steal": cts.Steal,
"time_guest": cts.Guest,
"time_guest_nice": cts.GuestNice,
}
acc.AddCounter("cpu", fieldsC, tags, now)
}
// Add in percentage
if len(s.lastStats) == 0 {
// If it's the 1st gather, can't get CPU Usage stats yet
continue
}
lastCts := s.lastStats[i]
lastTotal := totalCpuTime(lastCts)
totalDelta := total - lastTotal
if totalDelta < 0 {
s.lastStats = times
return fmt.Errorf("Error: current total CPU time is less than previous total CPU time")
}
if totalDelta == 0 {
continue
}
fieldsG := map[string]interface{}{
"usage_user": 100 * (cts.User - lastCts.User) / totalDelta,
"usage_system": 100 * (cts.System - lastCts.System) / totalDelta,
"usage_idle": 100 * (cts.Idle - lastCts.Idle) / totalDelta,
"usage_nice": 100 * (cts.Nice - lastCts.Nice) / totalDelta,
"usage_iowait": 100 * (cts.Iowait - lastCts.Iowait) / totalDelta,
"usage_irq": 100 * (cts.Irq - lastCts.Irq) / totalDelta,
"usage_softirq": 100 * (cts.Softirq - lastCts.Softirq) / totalDelta,
"usage_steal": 100 * (cts.Steal - lastCts.Steal) / totalDelta,
"usage_guest": 100 * (cts.Guest - lastCts.Guest) / totalDelta,
"usage_guest_nice": 100 * (cts.GuestNice - lastCts.GuestNice) / totalDelta,
}
acc.AddGauge("cpu", fieldsG, tags, now)
}
s.lastStats = times
return nil
}
