ntp-4.2.4p7-daemonpll.patch

   1 diff -up ntp-4.2.4p7/ntpd/ntp_loopfilter.c.daemonpll ntp-4.2.4p7/ntpd/ntp_loopfilter.c
   2 --- ntp-4.2.4p7/ntpd/ntp_loopfilter.c.daemonpll 2009-05-18 18:13:31.000000000 +0200
   3 +++ ntp-4.2.4p7/ntpd/ntp_loopfilter.c   2009-05-18 18:18:13.000000000 +0200
   4 @@ -489,10 +489,9 @@ local_clock(
   5                         /*
   6                          * For the PLL the integration interval
   7                          * (numerator) is the minimum of the update
   8 -                        * interval and poll interval. This allows
   9 -                        * oversampling, but not undersampling.
  10 +                        * interval and Allan intercept.
  11                          */
  12 -                       etemp = min(mu, (u_long)ULOGTOD(sys_poll));
  13 +                       etemp = min(mu, allan_xpt);
  14                         dtemp = 4 * CLOCK_PLL * ULOGTOD(sys_poll);
  15                         plladj = fp_offset * etemp / (dtemp * dtemp);
  16                         rstclock(S_SYNC, peer->epoch, fp_offset);
  17 @@ -801,13 +805,10 @@ adj_host_clock(
  18
  19         /*
  20          * Implement the phase and frequency adjustments. The gain
  21 -        * factor (denominator) is not allowed to increase beyond the
  22 -        * Allan intercept. It doesn't make sense to average phase noise
  23 -        * beyond this point and it helps to damp residual offset at the
  24 -        * longer poll intervals.
  25 +        * factor (denominator) increases with poll interval, so is
  26 +        * dominated by the FLL above the Allan intercept.
  27          */
  28 -       adjustment = clock_offset / (CLOCK_PLL * min(ULOGTOD(sys_poll),
  29 -           allan_xpt));
  30 +       adjustment = clock_offset / (CLOCK_PLL * ULOGTOD(sys_poll));
  31         clock_offset -= adjustment;
  32         adj_systime(adjustment + drift_comp);
  33  #endif /* LOCKCLOCK */