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sources: add configurable limit for jitter

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The maxjitter directive sets the maximum allowed jitter of the sources
to not be rejected by the source selection algorithm. This prevents
synchronisation with sources that have a small root distance, but their
time is too variable. By default, the maximum jitter is 1 second.
This commit is contained in:
Miroslav Lichvar
2016-12-07 09:40:43 +01:00
parent 68039e0d14
commit 8bbb8fa062
4 changed files with 28 additions and 1 deletions
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11
conf.c
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@@ -90,6 +90,7 @@ static double max_drift = 500000.0; /* in ppm */
static double max_slew_rate = 1e6 / 12.0; /* in ppm */
static double max_distance = 3.0;
static double max_jitter = 1.0;
static double reselect_distance = 1e-4;
static double stratum_weight = 1e-3;
static double combine_limit = 3.0;
@@ -510,6 +511,8 @@ CNF_ParseLine(const char *filename, int number, char *line)
parse_double(p, &max_distance);
} else if (!strcasecmp(command, "maxdrift")) {
parse_double(p, &max_drift);
} else if (!strcasecmp(command, "maxjitter")) {
parse_double(p, &max_jitter);
} else if (!strcasecmp(command, "maxsamples")) {
parse_int(p, &max_samples);
} else if (!strcasecmp(command, "maxslewrate")) {
@@ -1551,6 +1554,14 @@ CNF_GetMaxDistance(void)
/* ================================================== */
double
CNF_GetMaxJitter(void)
{
return max_jitter;
}
/* ================================================== */
double
CNF_GetReselectDistance(void)
{