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ntpd: speed up reaction to poll interval decrease

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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko 2010-01-02 01:50:16 +01:00
parent d9109e3b48
commit 2e36eb8f27
1 changed files with 13 additions and 0 deletions
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13
networking/ntpd.c
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@ -1484,7 +1484,20 @@ recv_and_process_peer_pkt(peer_t *p)
if (G.polladj_count < -POLLADJ_LIMIT) { if (G.polladj_count < -POLLADJ_LIMIT) {
G.polladj_count = 0; G.polladj_count = 0;
if (G.poll_exp > MINPOLL) { if (G.poll_exp > MINPOLL) {
llist_t *item;
G.poll_exp--; G.poll_exp--;
/* Correct p->next_action_time in each peer
* which waits for sending, so that they send earlier.
* Old pp->next_action_time are on the order
* of t + (1 << old_poll_exp) + small_random,
* we simply need to subtract ~half of that.
*/
for (item = G.ntp_peers; item != NULL; item = item->link) {
peer_t *pp = (peer_t *) item->data;
if (pp->p_fd < 0)
pp->next_action_time -= (1 << G.poll_exp);
}
VERB3 bb_error_msg("polladj: discipline_jitter:%f --poll_exp=%d", VERB3 bb_error_msg("polladj: discipline_jitter:%f --poll_exp=%d",
G.discipline_jitter, G.poll_exp); G.discipline_jitter, G.poll_exp);
} }