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ntpd: let user know if spike was detected

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function                                             old     new   delta
update_local_clock                                   861     943     +82

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko
2013-12-04 13:19:04 +01:00
parent 327f550669
commit cb1dc1d1d1
1 changed files with 7 additions and 4 deletions
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11
networking/ntpd.c
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@@ -1347,10 +1347,12 @@ update_local_clock(peer_t *p)
* offset exceeds the step threshold and when it does not.
*/
if (abs_offset > STEP_THRESHOLD) {
double remains;
switch (G.discipline_state) {
case STATE_SYNC:
/* The first outlyer: ignore it, switch to SPIK state */
VERB3 bb_error_msg("offset:%+f - spike detected", offset);
VERB2 bb_error_msg("offset:%+f - spike", offset);
G.discipline_state = STATE_SPIK;
return -1; /* "decrease poll interval" */
@@ -1358,9 +1360,10 @@ update_local_clock(peer_t *p)
/* Ignore succeeding outlyers until either an inlyer
* is found or the stepout threshold is exceeded.
*/
if (since_last_update < WATCH_THRESHOLD) {
VERB3 bb_error_msg("spike detected, datapoint ignored, %f sec remains",
WATCH_THRESHOLD - since_last_update);
remains = WATCH_THRESHOLD - since_last_update;
if (remains > 0) {
VERB2 bb_error_msg("spike, datapoint ignored, %f sec remains",
remains);
return -1; /* "decrease poll interval" */
}
/* fall through: we need to step */