diff options
Diffstat (limited to 'src/timedate/timedate-sntp.c')
| -rw-r--r-- | src/timedate/timedate-sntp.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/src/timedate/timedate-sntp.c b/src/timedate/timedate-sntp.c index b5d60c60a..a85b37775 100644 --- a/src/timedate/timedate-sntp.c +++ b/src/timedate/timedate-sntp.c @@ -399,6 +399,12 @@ static bool sntp_sample_spike_detection(SNTPContext *sntp, double offset, double double jitter; double j; + sntp->packet_count++; + + /* ignore initial sample */ + if (sntp->packet_count == 1) + return false; + /* store the current data in our samples array */ idx_cur = sntp->samples_idx; idx_new = (idx_cur + 1) % ELEMENTSOF(sntp->samples); @@ -406,10 +412,8 @@ static bool sntp_sample_spike_detection(SNTPContext *sntp, double offset, double sntp->samples[idx_new].offset = offset; sntp->samples[idx_new].delay = delay; - sntp->packet_count++; - jitter = sntp->samples_jitter; - /* calculate new jitter value from the RMS differences relative to the lowest delay sample */ + jitter = sntp->samples_jitter; for (idx_min = idx_cur, i = 0; i < ELEMENTSOF(sntp->samples); i++) if (sntp->samples[i].delay > 0 && sntp->samples[i].delay < sntp->samples[idx_min].delay) idx_min = i; |