9a01ccc07f
The corrtimeratio directive controls the ratio between the duration in which the clock is slewed for an average correction according to the source history and the interval in which the corrections are done (usually the NTP polling interval). Corrections larger than the average take less time and smaller corrections take more time, the amount of the correction and the correction time are inversely proportional. Increasing corrtimeratio makes the overall frequency error of the system clock smaller, but increases the overall time error as the corrections will take longer. By default, the ratio is 1, which means the duration of an average correction will be close to the update interval.
91 lines
3.3 KiB
C
91 lines
3.3 KiB
C
/*
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chronyd/chronyc - Programs for keeping computer clocks accurate.
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**********************************************************************
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* Copyright (C) Richard P. Curnow 1997-2003
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of version 2 of the GNU General Public License as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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**********************************************************************
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=======================================================================
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Header file for configuration module
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*/
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#ifndef GOT_CONF_H
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#define GOT_CONF_H
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#include "addressing.h"
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extern char *CNF_GetRtcDevice(void);
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extern void CNF_ReadFile(const char *filename);
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extern void CNF_AddSources(void);
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extern void CNF_AddBroadcasts(void);
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extern void CNF_AddRefclocks(void);
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extern void CNF_ProcessInitStepSlew(void (*after_hook)(void *), void *anything);
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extern unsigned short CNF_GetAcquisitionPort(void);
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extern unsigned short CNF_GetNTPPort(void);
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extern char *CNF_GetDriftFile(void);
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extern char *CNF_GetLogDir(void);
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extern char *CNF_GetDumpDir(void);
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extern int CNF_GetLogBanner(void);
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extern int CNF_GetLogMeasurements(void);
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extern int CNF_GetLogStatistics(void);
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extern int CNF_GetLogTracking(void);
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extern int CNF_GetLogRtc(void);
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extern int CNF_GetLogRefclocks(void);
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extern int CNF_GetLogTempComp(void);
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extern char *CNF_GetKeysFile(void);
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extern char *CNF_GetRtcFile(void);
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extern unsigned long CNF_GetCommandKey(void);
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extern int CNF_GetDumpOnExit(void);
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extern int CNF_GetManualEnabled(void);
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extern int CNF_GetCommandPort(void);
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extern int CNF_GetRTCOnUTC(void);
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extern int CNF_GetRTCSync(void);
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extern void CNF_GetMakeStep(int *limit, double *threshold);
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extern void CNF_GetLogChange(int *enabled, double *threshold);
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extern void CNF_GetMailOnChange(int *enabled, double *threshold, char **user);
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extern int CNF_GetNoClientLog(void);
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extern unsigned long CNF_GetClientLogLimit(void);
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extern void CNF_GetFallbackDrifts(int *min, int *max);
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extern void CNF_GetBindAddress(int family, IPAddr *addr);
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extern void CNF_GetBindCommandAddress(int family, IPAddr *addr);
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extern char *CNF_GetPidFile(void);
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extern void CNF_GetLinuxHz(int *set, int *hz);
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extern void CNF_GetLinuxFreqScale(int *set, double *freq_scale);
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/* Value returned in ppm, as read from file */
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extern double CNF_GetMaxUpdateSkew(void);
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extern double CNF_GetMaxClockError(void);
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extern double CNF_GetCorrectionTimeRatio(void);
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extern double CNF_GetReselectDistance(void);
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extern double CNF_GetStratumWeight(void);
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extern int CNF_AllowLocalReference(int *stratum);
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extern void CNF_SetupAccessRestrictions(void);
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extern int CNF_GetSchedPriority(void);
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extern int CNF_GetLockMemory(void);
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extern void CNF_GetTempComp(char **file, double *interval, double *T0, double *k0, double *k1, double *k2);
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#endif /* GOT_CONF_H */
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