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sourcestats: enable selection with maxsamples < 3

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Setting maxsamples to 1 or 2 prevented the source from being selected as
the regression would always fail. Handle this as a special case with
disabled frequency tracking in order to enable a fast reference update
with the -q/-Q option.
This commit is contained in:
Miroslav Lichvar
2019-08-05 17:53:00 +02:00
parent 24134c78e8
commit 28e3e4cdca
2 changed files with 11 additions and 0 deletions
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7
sourcestats.c
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@@ -708,6 +708,13 @@ SST_GetSelectionData(SST_Stats inst, struct timespec *now,
*select_ok = inst->regression_ok;
/* If maxsamples is too small to have a successful regression, enable the
selection as a special case for a fast update/print-once reference mode */
if (!*select_ok && inst->n_samples < 3 && inst->n_samples == inst->max_samples) {
*std_dev = CNF_GetMaxJitter();
*select_ok = 1;
}
DEBUG_LOG("n=%d off=%f dist=%f sd=%f first_ago=%f last_ago=%f selok=%d",
inst->n_samples, offset, *root_distance, *std_dev,
*first_sample_ago, *last_sample_ago, *select_ok);