| 393 | SmearingEndS: clockSmearing.smearingEndS, |
| 394 | UTCOffsetPreS: clockSmearing.utcOffsetPreS, |
| 395 | UTCOffsetPostS: clockSmearing.utcOffsetPostS, |
| 396 | }, nil |
| 397 | } |
| 398 | |
| 399 | func (s *Daemon) doWork(shm *fbclock.Shm, data *DataPoint) error { |
| 400 | // push stats |
| 401 | s.stats.SetCounter("master_offset_ns", int64(data.MasterOffsetNS)) |
| 402 | s.stats.SetCounter("path_delay_ns", int64(data.PathDelayNS)) |
| 403 | s.stats.SetCounter("ingress_time_ns", data.IngressTimeNS) |
| 404 | s.stats.SetCounter("freq_adj_ppb", int64(data.FreqAdjustmentPPB)) |
| 405 | s.stats.SetCounter("clock_accuracy_ns", int64(data.ClockAccuracyNS)) |
| 406 | // try and calculate how long ago was the ingress time |
| 407 | // use clock_gettime as the fastest and widely available method |
| 408 | phcTime, err := s.getPHCTime() |
| 409 | if err != nil { |
| 410 | return fmt.Errorf("failed to get PHC time from %s: %w", s.cfg.Iface, errors.Join(errNoPHC, err)) |
| 411 | } |
| 412 | |
| 413 | if data.IngressTimeNS > 0 { |
| 414 | s.state.updateIngressTimeNS(data.IngressTimeNS) |
| 415 | } |
| 416 | it := s.state.ingressTimeNS() |
| 417 | if it > 0 { |
| 418 | timeSinceIngress := phcTime.UnixNano() - it |
| 419 | log.Debugf("Time since ingress: %dns", timeSinceIngress) |
| 420 | } else { |
| 421 | log.Warning("No data for time since ingress") |
| 422 | } |
| 423 | // read tzdata for leap seconds |
| 424 | leaps, err := leapSeconds() |
| 425 | if err != nil { |
| 426 | log.Warningf("Failed to get leap seconds: %v", err) |
| 427 | } |
| 428 | // store everything in shared memory |
| 429 | d, err := s.calculateSHMData(data, leaps) |
| 430 | if err != nil { |
| 431 | if errors.Is(err, errNotEnoughData) { |
| 432 | log.Warning(err) |
| 433 | return nil |
| 434 | } |
| 435 | return err |
| 436 | } |
| 437 | s.state.lastStoredData = d |
| 438 | if err := fbclock.StoreFBClockDataV1(shm.File.Fd(), *d); err != nil { |
| 439 | return err |
| 440 | } |
| 441 | // aggregated stats over 1 minute |
| 442 | maxDp := s.state.aggregateDataPointsMax(minRingSize(s.cfg.RingSize, s.cfg.Interval)) |
| 443 | s.stats.SetCounter("master_offset_ns.60.abs_max", int64(maxDp.MasterOffsetNS)) |
| 444 | s.stats.SetCounter("path_delay_ns.60.abs_max", int64(maxDp.PathDelayNS)) |
| 445 | s.stats.SetCounter("freq_adj_ppb.60.abs_max", int64(maxDp.FreqAdjustmentPPB)) |
| 446 | return nil |