Annotation of embedaddon/ntp/scripts/stats/README.stats, revision 1.1
1.1 ! misho 1: Statistics file formats (README.stats)
! 2:
! 3: The xntp3 daemon can produce a variety of statistics files which are
! 4: useful for maintenance, evaluation and retrospective calibration
! 5: purposes. See the xntpd.8 man page for instructions on how to configure
! 6: this feature. Since these files can become rather large and cumbersome,
! 7: they are ordinarily reduced to summary form by running the summary.sh
! 8: shell script once per day, week or month, as appropriate. There are
! 9: three file collections presently defined: peerstats, loopstats and
! 10: clockstats, each of which is described in this note.
! 11:
! 12: peerstats
! 13:
! 14: The following data are collected in the peerstats files. The files are
! 15: reduced to summary data using the peer.sh shell script. See the peer.awk
! 16: script for further information. A line in the file is produced upon
! 17: reception of each valid update from a configured peer.
! 18:
! 19: 49236 30.756 140.173.96.1 9474 0.000603 0.37532
! 20:
! 21: 49236 modified Julian day number
! 22: 30.756 time of day (s) past midnight UTC
! 23: 140.173.96.1 peer identifier (IP address or receiver identifier)
! 24: 9474 peer status word (hex) (see NTP specification)
! 25: 0.000603 offset (s)
! 26: 0.08929 delay (s)
! 27: 0.37532 dispersion (s)
! 28:
! 29: loopstats
! 30:
! 31: The following data are collected in the loopstats files. The files are
! 32: reduced to summary data using the loop.sh shell script. See the loop.awk
! 33: script for further information. A line in the file is produced at each
! 34: valid update of the local clock.
! 35:
! 36: 49236 11.897 -0.000004 -35.9384 0
! 37:
! 38: 49236 modified Julian day number
! 39: 11.897 time of day (s) past midnight UTC
! 40: -0.000004 time offset (s)
! 41: -35.9384 frequency offset (ppm)
! 42: 0 phase-lock loop time constant
! 43:
! 44: clockstats
! 45:
! 46: The following data are collected in the clockstats files. The files are
! 47: reduced to summary data using the clock.sh shell script, which also
! 48: updates the ensemble, etf, itf and tdata data files as well. See the
! 49: clock.awk, ensemble.awk, etf.awk, itf.awk and tdta.awk scripts for
! 50: further information. A line in the file is produced at each valid update
! 51: received from a configured radio clock. Data are at present recorded for
! 52: several radios. The first part of each data line is similar for all
! 53: radios, e.g.:
! 54:
! 55: 49234 60517.826 127.127.4.1 93 247 16:48:21.814
! 56:
! 57: 49234 modified Julian day number
! 58: 60517.826 time of day (s) past midnight UTC
! 59: 127.127.4.1 receiver identifier (Spectracom 8170/Netclock-2)
! 60: 93 247 16:48:21.814 timecode (format varies)
! 61:
! 62: In the case of the Austron GPS receiver, a good deal of additional
! 63: information is extracted from the radio, as described below. The formats
! 64: shown consist of one line with all the fields shown in order. The
! 65: timecode formats specific to each radio follow. See the file
! 66: README.timecodes for detailed information on the timecode formats used
! 67: by these radios.
! 68:
! 69: Spectracom 8170/Netclock-2 WWVB receiver
! 70:
! 71: 49234 60517.826 127.127.4.1 ?A93 247 16:48:21.814
! 72:
! 73: The '?' and 'A' characters are present only when the receiver is
! 74: unsynchronized; otherwise, they are replaced by space ' ' characters.
! 75:
! 76: IRIG audio decoder
! 77:
! 78: 49234 60517.826 127.127.6.0 247 16:48:21?
! 79:
! 80: The '?' character is present only when the receiver is unsynchronized.
! 81:
! 82: Austron 2200A/2201A GPS receiver
! 83:
! 84: 49234 60580.843 127.127.10.1 93:247:16:49:24.814?
! 85:
! 86: The '?' character is present only when the receiver is unsynchronized.
! 87:
! 88: Depending on the installed options, the Austron 2200A/2201A recognizes a
! 89: number of special commands that report various data items. See the
! 90: refclock_as2201.c source module for a list of the commands used. These
! 91: data are collected only if the following line is included in the
! 92: configuration file ntp.conf:
! 93:
! 94: fudge 127.127.10.1 flag4 1 # enable extended statistics collection
! 95:
! 96: The format of each data line returned is summarized in the following
! 97: list.
! 98:
! 99: External time/frequency data (requires input buffer option IN)
! 100:
! 101: These data determine the deviations of external time/frequency inputs
! 102: relative to receiver oscillator time. The following data are typical
! 103: using an external cesium oscillator PPS and 5-MHz outputs.
! 104:
! 105: 49234 60580.843 127.127.10.1 93:247:16:49:24.814 ETF
! 106:
! 107: -85.9 time interval (ns)
! 108: -89.0 average time interval (ns)
! 109: 4.0 time interval sigma (ns)
! 110: +1.510E-11 time interval rate
! 111: -4.500E-11 deltaf/f
! 112: +1.592E-11 average deltaf/f
! 113: 5.297E-13 sigma deltaf/f
! 114: 500 number of samples
! 115:
! 116: Model and option identifiers
! 117:
! 118: These data show the receiver model number and option configuration.
! 119:
! 120: 49234 60708.848 127.127.10.1 93:247:16:51:32.817 ID;OPT;VER
! 121:
! 122: GPS 2201A model ident (must be "GPS 2200A" or "GPS 2201A")
! 123: TTY1 rs232 option present (required)
! 124: TC1 IRIG option present (optional)
! 125: LORAN LORAN assist option present (optional)
! 126: IN input buffer option present (optional)
! 127: OUT1 output buffer option present (required)
! 128: B.00 data processor software version ("B.00" or later)
! 129: B.00 signal processor software version ("B.00" or later)
! 130: 28-Apr-93 software version date ("28-Apr-93" or later)
! 131:
! 132: Internal time/frequency data
! 133:
! 134: These data determine the deviations of the receiver oscillator with
! 135: respect to satellite time.
! 136:
! 137: 49234 60564.846 127.127.10.1 93:247:16:49:08.816 ITF
! 138:
! 139: COCO current mode (must be "COCO")
! 140: 0 code coast mode (must be zero)
! 141: +6.6152E-08 code sigma (s)
! 142: -3.5053E-08 code delta t (s)
! 143: -4.0361E-11 deltat/t
! 144: -6.4746E-11 oscillator ageing rate
! 145: 500.00 loop time constant
! 146: 4.984072 electrical tuning (V)
! 147:
! 148: GPS/LORAN ensemble data (requires LORAN assist option LORAN)
! 149:
! 150: These data determine the deviations and weights to calculate ensemble
! 151: time from GPS and LORAN data.
! 152:
! 153: 49234 60596.852 127.127.10.1 93:247:16:49:40.812 LORAN ENSEMBLE
! 154:
! 155: +9.06E-08 GPS t (s)
! 156: +3.53E-08 GPS sigma (s)
! 157: .532 GPS weight
! 158: +3.71E-08 LORAN t (s)
! 159: +3.76E-08 LORAN sigma (s)
! 160: .468 LORAN weight
! 161: +6.56E-08 ensemble t
! 162: +6.94E-08 ensemble sigma (s)
! 163:
! 164: LORAN stationkeeping data (requires LORAN assist option LORAN)
! 165:
! 166: These data determine which stations of the LORAN chain are being
! 167: tracked, together with individual signal/noise ratios, deviations and
! 168: weights.
! 169:
! 170: 49234 60532.850 127.127.10.1 93:247:16:48:36.820 LORAN TDATA
! 171:
! 172: M station identifier; data follows
! 173: OK status (must be "OK" for tracking)
! 174: 0 cw flag
! 175: 0 sw flag
! 176: 1162.17 time of arrival
! 177: -4.6 snr (-30.0 if not "OK" status)
! 178: 1.67E-07 2-sample phase-time deviation
! 179: .507 weight (included only if "OK" status)
! 180: W AQ 0 0 3387.80 -31.0 station identifier and data
! 181: X OK 0 0 1740.27 -11.2 2.20E-07 .294 station identifier and data
! 182: Y OK 0 0 2180.71 -4.6 2.68E-07 .198 station identifier and data
! 183: Z CV 0 0 3392.94 -30.0 station identifier and data
! 184:
! 185: Oscillator status and environment
! 186:
! 187: These data determine the receiver oscillator type, mode, status and
! 188: environment. Nominal operating conditions are shown below.
! 189:
! 190: 49234 60628.847 127.127.10.1 93:247:16:50:12.817 OSC;ET;TEMP
! 191:
! 192: 1121 Software Control oscillator model and mode (must be
! 193: "Software Control")
! 194: Locked status (must be "Locked")
! 195: 4.979905 electrical tuning (V)
! 196: 44.81 oscillator cavity temperature
! 197:
! 198: Receiver position, status and offsets
! 199:
! 200: These data determine the receiver position and elevation, together with
! 201: programmable delay corrections for the antenna cable and receiver.
! 202:
! 203: 49234 60788.847 127.127.10.1 93:247:16:52:52.817 POS;PPS;PPSOFF
! 204:
! 205: +39:40:48.425 receiver latitude (N)
! 206: -075:45:02.392 receiver longitude (E)
! 207: +74.09 receiver elevation (m)
! 208: Stored position status (must be "Stored")
! 209: UTC PPS/PPM alignment (must be "UTC")
! 210: 0 receiver delay (ns) (should be zero for calibrated
! 211: receiver)
! 212: 200 cable delay (ns)
! 213: 0 user time bias (ns) (must be zero)
! 214:
! 215: Satellite tracking status
! 216:
! 217: These data determine how many satellites are being tracked. At the
! 218: present state of constellation development, there should be at least
! 219: three visible satellites in view. Much of the time the maximum of
! 220: seven are being tracked; rarely this number drops to two.
! 221:
! 222: 49234 60612.850 127.127.10.1 93:247:16:49:56.820 TRSTAT
! 223:
! 224: 24 T satellite prn and status (T = track, A = acquire)
! 225: 16 A 13 T 20 T 18 T 07 T 12 T list continued
! 226:
! 227: UTC leap-second information
! 228:
! 229: These data determine when the next leap second is to occur. The exact
! 230: method to use is obscure.
! 231:
! 232: 49234 60548.847 127.127.10.1 93:247:16:48:52.818 UTC
! 233:
! 234: -1.2107E-08 A0 term (s)
! 235: -1.2790E-13 A1 term (s)
! 236: +9.0000E+00 current leap seconds (s)
! 237: +2.0480E+05 time for leap seconds (s)
! 238: +2.0100E+02 week number for delta leap (weeks)
! 239: +1.9100E+02 week number for future leap (weeks)
! 240: +4.0000E+00 day number for future leap (days)
! 241: +9.0000E+00 future leap seconds (s)
! 242:
! 243: David L. Mills
! 244: University of Delaware
! 245: mills@udel.edu
! 246: 23 October 1993
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