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Add minsamples and maxsamples directives

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Allow configuration of the maximum and minimum number of samples per
source.
This commit is contained in:
Miroslav Lichvar
2013-06-13 16:23:32 +02:00
parent 22e5ed44c2
commit 6d2fb9f782
6 changed files with 97 additions and 2 deletions
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10
sourcestats.c
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@@ -43,6 +43,10 @@
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)
@@ -160,6 +164,8 @@ 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();
}
/* ================================================== */
@@ -239,7 +245,8 @@ SST_AccumulateSample(SST_Stats inst, struct timeval *sample_time,
int n, m;
/* Make room for the new sample */
if (inst->n_samples == MAX_SAMPLES) {
if (inst->n_samples > 0 &&
(inst->n_samples == MAX_SAMPLES || inst->n_samples == max_samples)) {
prune_register(inst, 1);
}
@@ -428,6 +435,7 @@ 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,
&est_intercept, &est_slope, &est_var,
&est_intercept_sd, &est_slope_sd,
&best_start, &nruns, &degrees_of_freedom);