mirror of
https://github.com/sheumann/hush.git
synced 2024-08-21 11:28:57 +00:00
ntpd: expose more data to the script; more eagerly drop to lower poll
function old new delta run_script 340 395 +55 recv_and_process_peer_pkt 817 869 +52 passwd_main 1027 1058 +31 ntpd_main 845 855 +10 update_local_clock 853 823 -30 ------------------------------------------------------------------------------ (add/remove: 0/0 grow/shrink: 4/1 up/down: 148/-30) Total: 118 bytes Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
parent
725b5a387a
commit
12628b7797
@ -49,24 +49,26 @@
|
||||
#define RETRY_INTERVAL 5 /* on error, retry in N secs */
|
||||
#define RESPONSE_INTERVAL 15 /* wait for reply up to N secs */
|
||||
|
||||
#define FREQ_TOLERANCE 0.000015 /* % frequency tolerance (15 PPM) */
|
||||
#define BURSTPOLL 0
|
||||
#define MINPOLL 4 /* % minimum poll interval (6: 64 s) */
|
||||
#define MAXPOLL 12 /* % maximum poll interval (12: 1.1h, 17: 36.4h) (was 17) */
|
||||
#define MINDISP 0.01 /* % minimum dispersion (s) */
|
||||
#define MAXDISP 16 /* maximum dispersion (s) */
|
||||
#define MAXSTRAT 16 /* maximum stratum (infinity metric) */
|
||||
#define MAXDIST 1 /* % distance threshold (s) */
|
||||
#define MIN_SELECTED 1 /* % minimum intersection survivors */
|
||||
#define MIN_CLUSTERED 3 /* % minimum cluster survivors */
|
||||
|
||||
#define MAXDRIFT 0.000500 /* frequency drift we can correct (500 PPM) */
|
||||
|
||||
/* Clock discipline parameters and constants */
|
||||
#define STEP_THRESHOLD 0.128 /* step threshold (s) */
|
||||
#define WATCH_THRESHOLD 150 /* stepout threshold (s). std ntpd uses 900 (11 mins (!)) */
|
||||
/* NB: set WATCH_THRESHOLD to ~60 when debugging to save time) */
|
||||
#define PANIC_THRESHOLD 1000 /* panic threshold (s) */
|
||||
//UNUSED: #define PANIC_THRESHOLD 1000 /* panic threshold (s) */
|
||||
|
||||
#define FREQ_TOLERANCE 0.000015 /* frequency tolerance (15 PPM) */
|
||||
#define BURSTPOLL 0 /* initial poll */
|
||||
#define MINPOLL 4 /* minimum poll interval (6: 64 s) */
|
||||
#define BIGPOLL 10 /* drop to lower poll at any trouble (10: 17 min) */
|
||||
#define MAXPOLL 12 /* maximum poll interval (12: 1.1h, 17: 36.4h) (was 17) */
|
||||
#define POLLDOWN_OFFSET (STEP_THRESHOLD / 3) /* actively lower poll when we see such big offsets */
|
||||
#define MINDISP 0.01 /* minimum dispersion (s) */
|
||||
#define MAXDISP 16 /* maximum dispersion (s) */
|
||||
#define MAXSTRAT 16 /* maximum stratum (infinity metric) */
|
||||
#define MAXDIST 1 /* distance threshold (s) */
|
||||
#define MIN_SELECTED 1 /* minimum intersection survivors */
|
||||
#define MIN_CLUSTERED 3 /* minimum cluster survivors */
|
||||
|
||||
#define MAXDRIFT 0.000500 /* frequency drift we can correct (500 PPM) */
|
||||
|
||||
/* Poll-adjust threshold.
|
||||
* When we see that offset is small enough compared to discipline jitter,
|
||||
@ -686,10 +688,10 @@ send_query_to_peer(peer_t *p)
|
||||
}
|
||||
|
||||
|
||||
static void run_script(const char *action)
|
||||
static void run_script(const char *action, double offset)
|
||||
{
|
||||
char *argv[3];
|
||||
char *env1, *env2, *env3;
|
||||
char *env1, *env2, *env3, *env4;
|
||||
|
||||
if (!G.script_name)
|
||||
return;
|
||||
@ -706,9 +708,12 @@ static void run_script(const char *action)
|
||||
putenv(env2);
|
||||
env3 = xasprintf("%s=%u", "poll_interval", 1 << G.poll_exp);
|
||||
putenv(env3);
|
||||
env4 = xasprintf("%s=%f", "offset", offset);
|
||||
putenv(env4);
|
||||
/* Other items of potential interest: selected peer,
|
||||
* rootdelay, reftime, rootdisp, refid, ntp_status,
|
||||
* last_update_offset, last_update_recv_time, discipline_jitter
|
||||
* last_update_offset, last_update_recv_time, discipline_jitter,
|
||||
* how many peers have reachable_bits = 0?
|
||||
*/
|
||||
|
||||
/* Don't want to wait: it may run hwclock --systohc, and that
|
||||
@ -719,9 +724,11 @@ static void run_script(const char *action)
|
||||
unsetenv("stratum");
|
||||
unsetenv("freq_drift_ppm");
|
||||
unsetenv("poll_interval");
|
||||
unsetenv("offset");
|
||||
free(env1);
|
||||
free(env2);
|
||||
free(env3);
|
||||
free(env4);
|
||||
|
||||
G.last_script_run = G.cur_time;
|
||||
}
|
||||
@ -1095,10 +1102,14 @@ update_local_clock(peer_t *p)
|
||||
|
||||
abs_offset = fabs(offset);
|
||||
|
||||
#if 0
|
||||
/* If needed, -S script can detect this by looking at $offset
|
||||
* env var and kill parent */
|
||||
/* If the offset is too large, give up and go home */
|
||||
if (abs_offset > PANIC_THRESHOLD) {
|
||||
bb_error_msg_and_die("offset %f far too big, exiting", offset);
|
||||
}
|
||||
#endif
|
||||
|
||||
/* If this is an old update, for instance as the result
|
||||
* of a system peer change, avoid it. We never use
|
||||
@ -1185,7 +1196,7 @@ update_local_clock(peer_t *p)
|
||||
G.poll_exp = MINPOLL;
|
||||
G.stratum = MAXSTRAT;
|
||||
|
||||
run_script("step");
|
||||
run_script("step", offset);
|
||||
|
||||
if (G.discipline_state == STATE_NSET) {
|
||||
set_new_values(STATE_FREQ, /*offset:*/ 0, recv_time);
|
||||
@ -1274,7 +1285,7 @@ update_local_clock(peer_t *p)
|
||||
}
|
||||
if (G.stratum != p->lastpkt_stratum + 1) {
|
||||
G.stratum = p->lastpkt_stratum + 1;
|
||||
run_script("stratum");
|
||||
run_script("stratum", offset);
|
||||
}
|
||||
}
|
||||
|
||||
@ -1371,10 +1382,8 @@ update_local_clock(peer_t *p)
|
||||
tmx.freq, tmx.offset, tmx.constant, tmx.status);
|
||||
}
|
||||
#endif
|
||||
if (G.kernel_freq_drift != tmx.freq / 65536) {
|
||||
G.kernel_freq_drift = tmx.freq / 65536;
|
||||
VERB2 bb_error_msg("kernel clock drift: %ld ppm", G.kernel_freq_drift);
|
||||
}
|
||||
G.kernel_freq_drift = tmx.freq / 65536;
|
||||
VERB2 bb_error_msg("update offset:%f, clock drift:%ld ppm", G.last_update_offset, G.kernel_freq_drift);
|
||||
|
||||
return 1; /* "ok to increase poll interval" */
|
||||
}
|
||||
@ -1538,9 +1547,19 @@ recv_and_process_peer_pkt(peer_t *p)
|
||||
rc = -1;
|
||||
if (q) {
|
||||
rc = 0;
|
||||
if (!(option_mask32 & OPT_w))
|
||||
if (!(option_mask32 & OPT_w)) {
|
||||
rc = update_local_clock(q);
|
||||
/* If drift is dangerously large, immediately
|
||||
* drop poll interval one step down.
|
||||
*/
|
||||
if (q->filter_offset < -POLLDOWN_OFFSET
|
||||
|| q->filter_offset > POLLDOWN_OFFSET
|
||||
) {
|
||||
goto poll_down;
|
||||
}
|
||||
}
|
||||
}
|
||||
/* else: no peer selected, rc = -1: we want to poll more often */
|
||||
|
||||
if (rc != 0) {
|
||||
/* Adjust the poll interval by comparing the current offset
|
||||
@ -1572,7 +1591,8 @@ recv_and_process_peer_pkt(peer_t *p)
|
||||
}
|
||||
} else {
|
||||
G.polladj_count -= G.poll_exp * 2;
|
||||
if (G.polladj_count < -POLLADJ_LIMIT) {
|
||||
if (G.polladj_count < -POLLADJ_LIMIT || G.poll_exp >= BIGPOLL) {
|
||||
poll_down:
|
||||
G.polladj_count = 0;
|
||||
if (G.poll_exp > MINPOLL) {
|
||||
llist_t *item;
|
||||
@ -1910,7 +1930,7 @@ int ntpd_main(int argc UNUSED_PARAM, char **argv)
|
||||
&& G.cur_time - G.last_script_run > 11*60
|
||||
) {
|
||||
/* Useful for updating battery-backed RTC and such */
|
||||
run_script("periodic");
|
||||
run_script("periodic", G.last_update_offset);
|
||||
gettime1900d(); /* sets G.cur_time */
|
||||
}
|
||||
continue;
|
||||
|
Loading…
Reference in New Issue
Block a user