void
resetPtpEngineSlaveStats(PtpEngineSlaveStats* stats) {
resetDoublePermanentStdDev(&stats->ofmStats);
resetDoublePermanentStdDev(&stats->owdStats);
}
void
resetPtpEngineSlaveStats(PtpEngineSlaveStats* stats) {
resetDoublePermanentStdDev(&stats->ofmStats);
resetDoublePermanentStdDev(&stats->mpdStats);
resetDoublePermanentMedian(&stats->ofmMedianContainer);
resetDoublePermanentMedian(&stats->mpdMedianContainer);
stats->ofmStatsUpdated = FALSE;
stats->mpdStatsUpdated = FALSE;
}
void
updatePtpEngineStats (PtpClock* ptpClock, RunTimeOpts* rtOpts)
{
DBG("Refreshing slave engine stats counters\n");
ptpClock->slaveStats.owdMean = ptpClock->slaveStats.owdStats.meanContainer.mean;
ptpClock->slaveStats.owdStdDev = ptpClock->slaveStats.owdStats.stdDev;
ptpClock->slaveStats.ofmMean = ptpClock->slaveStats.ofmStats.meanContainer.mean;
ptpClock->slaveStats.ofmStdDev = ptpClock->slaveStats.ofmStats.stdDev;
ptpClock->slaveStats.statsCalculated = TRUE;
ptpClock->servo.driftMean = ptpClock->servo.driftStats.meanContainer.mean;
ptpClock->servo.driftStdDev = ptpClock->servo.driftStats.stdDev;
ptpClock->servo.statsCalculated = TRUE;
/* Handle the calibration delay - x periods of stats updates until servo starts */
if(rtOpts->calibrationDelay) {
++ptpClock->statsUpdates;
if(!ptpClock->isCalibrated && ptpClock->statsUpdates >= rtOpts->calibrationDelay) {
NOTICE("PTP engine now calibrated - enabling clock control\n");
ptpClock->isCalibrated = TRUE;
ptpClock->statsUpdates = 0;
}
}
if( (rtOpts->calibrationDelay == 0) || ptpClock->isCalibrated )
if(rtOpts->servoStabilityDetection) {
++ptpClock->servo.updateCount;
if ( !ptpClock->servo.runningMaxOutput && (ptpClock->servo.driftStdDev <= ptpClock->servo.stabilityThreshold)) {
/* Only update the stable period counter if we received some Sync messages since last update */
if(ptpClock->lastSyncCounter > 0) {
if((ptpClock->counters.syncMessagesReceived - ptpClock->lastSyncCounter) == 0)
ptpClock->servo.stableCount = 0;
else
++ptpClock->servo.stableCount;
} else
++ptpClock->servo.stableCount;
ptpClock->lastSyncCounter = ptpClock->counters.syncMessagesReceived;
} else
ptpClock->servo.stableCount = 0;
/* Servo considered stable - drift std dev below threshold for n measurements - saving drift*/
if(ptpClock->servo.stableCount >= ptpClock->servo.stabilityPeriod) {
if(!ptpClock->servo.isStable) {
NOTICE("Clock servo now stable - took %d seconds\n",
rtOpts->statsUpdateInterval * ptpClock->servo.updateCount);
#ifdef HAVE_SYS_TIMEX_H
saveDrift(ptpClock, rtOpts, FALSE);
#endif /* HAVE_SYS_TIMEX_H */
} else {
#ifdef HAVE_SYS_TIMEX_H
saveDrift(ptpClock, rtOpts, TRUE);
#endif /* HAVE_SYS_TIMEX_H */
}
ptpClock->servo.isStable = TRUE;
ptpClock->servo.stableCount = 0;
ptpClock->servo.updateCount = 0;
} else if(ptpClock->servo.updateCount >= ptpClock->servo.stabilityTimeout) {
ptpClock->servo.stableCount = 0;
ptpClock->servo.updateCount = 0;
if(!ptpClock->servo.isStable) {
if(ptpClock->servo.runningMaxOutput) {
WARNING("Clock servo not stable after %d seconds - running at maximum rate.\n", rtOpts->statsUpdateInterval * ptpClock->servo.stabilityTimeout);
} else {
WARNING("Clock servo not stable after %d seconds since last check. Saving current observed drift.\n", rtOpts->statsUpdateInterval * ptpClock->servo.stabilityTimeout);
#ifdef HAVE_SYS_TIMEX_H
saveDrift(ptpClock, rtOpts, FALSE);
#endif /* HAVE_SYS_TIMEX_H */
}
} else {
WARNING("Clock servo no longer stable\n");
ptpClock->servo.isStable = FALSE;
}
}
}
DBG("servo stablecount: %d\n",ptpClock->servo.stableCount);
resetDoublePermanentStdDev(&ptpClock->slaveStats.owdStats);
resetDoublePermanentStdDev(&ptpClock->slaveStats.ofmStats);
resetDoublePermanentStdDev(&ptpClock->servo.driftStats);
}
