ea096d6c1
Denys Vlasenko
2019-10-30
Subject
ntpd: decrease MIN_FREQHOLD by 2, increase "penalty" for largish offset x2
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networking/ntpd.c+5 -5
| @@ -164,7 +164,7 @@ | |
| */ | |
| #define INITIAL_SAMPLES 4 /* how many samples do we want for init */ | |
| - | #define MIN_FREQHOLD 12 /* adjust offset, but not freq in this many first adjustments */ |
| + | #define MIN_FREQHOLD 10 /* adjust offset, but not freq in this many first adjustments */ |
| #define BAD_DELAY_GROWTH 4 /* drop packet if its delay grew by more than this factor */ | |
| #define RETRY_INTERVAL 32 /* on send/recv error, retry in N secs (need to be power of 2) */ | |
| @@ -1876,11 +1876,11 @@ update_local_clock(peer_t *p) | |
| //15:31:53.473 update from:<IP> offset:+0.000007 delay:0.158142 jitter:0.010922 clock drift:+9.343ppm tc:6 | |
| //15:32:58.902 update from:<IP> offset:-0.000728 delay:0.158222 jitter:0.009454 clock drift:+9.298ppm tc:6 | |
| /* | |
| - | * This expression would choose MIN_FREQHOLD + 8 in the above example |
| - | * (off_065 is +1 for each 0.065536 seconds of offset). |
| + | * This expression would choose MIN_FREQHOLD + 14 in the above example |
| + | * (off_032 is +1 for each 0.032768 seconds of offset). |
| */ | |
| - | unsigned off_065 = abs((int)(tmx.offset >> 16)); |
| - | G.FREQHOLD_cnt = 1 + MIN_FREQHOLD + off_065; |
| + | unsigned off_032 = abs((int)(tmx.offset >> 15)); |
| + | G.FREQHOLD_cnt = 1 + MIN_FREQHOLD + off_032; |
| } | |
| G.FREQHOLD_cnt--; | |
| tmx.status |= STA_FREQHOLD; | |