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Last change
on this file since 3734 was 3621, checked in by Bruno Cornec, 10 years ago |
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New 3?3 banch for incorporation of latest busybox 1.25. Changing minor version to handle potential incompatibilities.
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File size:
679 bytes
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| Rev | Line | |
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| [3621] | 1 | This patch scales down small offsets quadratically. Reduces sensitivity to jitter
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| 2 |
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| 3 | diff --git a/networking/ntpd.c b/networking/ntpd.c
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| 4 | index 4695c33..ac05815 100644
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| 5 | --- a/networking/ntpd.c
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| 6 | +++ b/networking/ntpd.c
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| 7 | @@ -1654,6 +1654,17 @@ update_local_clock(peer_t *p)
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| 8 | */
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| 9 | if (G.offset_to_jitter_ratio >= TIMECONST_HACK_GATE)
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| 10 | tmx.constant--;
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| 11 | +
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| 12 | +{
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| 13 | + double d = p->lastpkt_delay;
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| 14 | + if (d > SLEW_THRESHOLD)
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| 15 | + d = SLEW_THRESHOLD;
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| 16 | + d /= 2;
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| 17 | + if ((abs_offset / d) < 1) {
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| 18 | + offset *= (abs_offset / d);
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| 19 | + }
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| 20 | +}
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| 21 | +
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| 22 | tmx.offset = (long)(offset * 1000000); /* usec */
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| 23 | if (SLEW_THRESHOLD < STEP_THRESHOLD) {
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| 24 | if (tmx.offset > (long)(SLEW_THRESHOLD * 1000000)) {
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