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local: make maximum frequency offset configurable

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Add maxdrift directive to set the maximum assumed drift of the clock,
which sets the maximum frequency offset chronyd is allowed to use to
to correct the drift.
This commit is contained in:
Miroslav Lichvar
2016-03-22 17:07:46 +01:00
parent d70e815e9f
commit a12c7c422b
4 changed files with 32 additions and 6 deletions
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11
conf.c
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@@ -85,6 +85,7 @@ static char *rtc_file = NULL;
static double max_update_skew = 1000.0;
static double correction_time_ratio = 3.0;
static double max_clock_error = 1.0; /* in ppm */
static double max_drift = 500000.0; /* in ppm */
static double max_slew_rate = 1e6 / 12.0; /* in ppm */
static double max_distance = 3.0;
@@ -489,6 +490,8 @@ CNF_ParseLine(const char *filename, int number, char *line)
parse_double(p, &max_clock_error);
} else if (!strcasecmp(command, "maxdistance")) {
parse_double(p, &max_distance);
} else if (!strcasecmp(command, "maxdrift")) {
parse_double(p, &max_drift);
} else if (!strcasecmp(command, "maxsamples")) {
parse_int(p, &max_samples);
} else if (!strcasecmp(command, "maxslewrate")) {
@@ -1486,6 +1489,14 @@ CNF_GetMaxUpdateSkew(void)
/* ================================================== */
double
CNF_GetMaxDrift(void)
{
return max_drift;
}
/* ================================================== */
double
CNF_GetMaxClockError(void)
{