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sources: allow setting minsamples and maxsamples for each source

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The minsamples and maxsamples directives now set the default value,
which can be overriden for individual sources in the server/peer/pool
and refclock directives.
This commit is contained in:
Miroslav Lichvar
2014-12-01 18:35:35 +01:00
parent 42dd5caa1b
commit 6688f40325
13 changed files with 108 additions and 22 deletions
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19
sourcestats.c
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@@ -43,10 +43,6 @@
to store per source */
#define MAX_SAMPLES 64
/* User defined maximum and minimum number of samples */
int max_samples;
int min_samples;
/* This is the assumed worst case bound on an unknown frequency,
2000ppm, which would be pretty bad */
#define WORST_CASE_FREQ_BOUND (2000.0/1.0e6)
@@ -68,6 +64,10 @@ struct SST_Stats_Record {
uint32_t refid;
IPAddr *ip_addr;
/* User defined minimum and maximum number of samples */
int min_samples;
int max_samples;
/* Number of samples currently stored. The samples are stored in circular
buffer. */
int n_samples;
@@ -163,8 +163,6 @@ SST_Initialise(void)
logfileid = CNF_GetLogStatistics() ? LOG_FileOpen("statistics",
" Date (UTC) Time IP Address Std dev'n Est offset Offset sd Diff freq Est skew Stress Ns Bs Nr")
: -1;
max_samples = CNF_GetMaxSamples();
min_samples = CNF_GetMinSamples();
}
/* ================================================== */
@@ -178,11 +176,14 @@ SST_Finalise(void)
/* This function creates a new instance of the statistics handler */
SST_Stats
SST_CreateInstance(uint32_t refid, IPAddr *addr)
SST_CreateInstance(uint32_t refid, IPAddr *addr, int min_samples, int max_samples)
{
SST_Stats inst;
inst = MallocNew(struct SST_Stats_Record);
inst->min_samples = min_samples;
inst->max_samples = max_samples;
SST_SetRefid(inst, refid, addr);
SST_ResetInstance(inst);
@@ -262,7 +263,7 @@ SST_AccumulateSample(SST_Stats inst, struct timeval *sample_time,
/* Make room for the new sample */
if (inst->n_samples > 0 &&
(inst->n_samples == MAX_SAMPLES || inst->n_samples == max_samples)) {
(inst->n_samples == MAX_SAMPLES || inst->n_samples == inst->max_samples)) {
prune_register(inst, 1);
}
@@ -447,7 +448,7 @@ SST_DoNewRegression(SST_Stats inst)
inst->regression_ok = RGR_FindBestRegression(times_back + inst->runs_samples,
offsets + inst->runs_samples, weights,
inst->n_samples, inst->runs_samples,
min_samples,
inst->min_samples,
&est_intercept, &est_slope, &est_var,
&est_intercept_sd, &est_slope_sd,
&best_start, &nruns, &degrees_of_freedom);