[chrony-dev] [GIT] chrony/chrony.git branch, master, updated. 1.26-26-g9a01ccc

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- Log -----------------------------------------------------------------
commit 9a01ccc07fd5399be88218c02a0430d30cefd82b
Author: Miroslav Lichvar <mlichvar@xxxxxxxxxx>
Date:   Tue Nov 15 12:24:50 2011 +0100

    Add corrtimeratio directive
    
    The corrtimeratio directive controls the ratio between the
    duration in which the clock is slewed for an average correction
    according to the source history and the interval in which the
    corrections are done (usually the NTP polling interval).  Corrections
    larger than the average take less time and smaller corrections take
    more time, the amount of the correction and the correction time are
    inversely proportional.
    
    Increasing corrtimeratio makes the overall frequency error of
    the system clock smaller, but increases the overall time error as
    the corrections will take longer.
    
    By default, the ratio is 1, which means the duration of an average
    correction will be close to the update interval.

commit 1b8deaf3547c86efd3ac567aba8fc0a5a28d79be
Author: Miroslav Lichvar <mlichvar@xxxxxxxxxx>
Date:   Tue Sep 13 14:53:46 2011 +0200

    Control offset correction rate in Linux driver
    
    The kernel currently doesn't support a linear adjustment with
    programmable rate, extend the use of the kernel PLL with locked
    frequency instead.
    
    Set the PLL time constant according to the correction time corresponding
    to the correction rate and corrected offset.
    
    On kernels with nano PLL adjtime() is no longer used.

commit c7d0232bb113c6ca86cd24f9e694c70bfc946ab2
Author: Miroslav Lichvar <mlichvar@xxxxxxxxxx>
Date:   Mon Sep 5 15:45:32 2011 +0200

    Introduce offset correction rate
    
    We want to correct the offset quickly, but we also want to keep the
    frequency error caused by the correction itself low.
    
    Define correction rate as the area of the region bounded by the graph of
    offset corrected in time. Set the rate so that the time needed to correct
    an offset equal to the current sourcestats stddev will be equal to the
    update interval (assuming linear adjustment). The offset and the
    time needed to make the correction are inversely proportional.
    
    This is only a suggestion and it's up to the system driver how the
    adjustment will be executed.

commit 79e5f2be1331fb639362cd159087343c06594351
Author: Miroslav Lichvar <mlichvar@xxxxxxxxxx>
Date:   Fri Nov 11 18:40:01 2011 +0100

    Include clock steps in calculated reference update interval

-----------------------------------------------------------------------

Summary of changes:
 acquire.c       |    2 +-
 chrony.texi     |   30 +++++++++++++++++++++
 cmdmon.c        |    2 +-
 conf.c          |   21 +++++++++++++++
 conf.h          |    1 +
 local.c         |   10 +++---
 local.h         |    7 +++--
 localp.h        |    5 ++-
 reference.c     |   64 +++++++++++++++++++++++++++++++++++++++-------
 reference.h     |    1 +
 rtc_linux.c     |    2 +-
 sources.c       |    1 +
 sys_linux.c     |   76 +++++++++++++++++++++++++++++++++++++++++++++++--------
 sys_netbsd.c    |    2 +-
 sys_solaris.c   |    2 +-
 sys_sunos.c     |    2 +-
 wrap_adjtimex.c |    4 +-
 wrap_adjtimex.h |    2 +-
 18 files changed, 194 insertions(+), 40 deletions(-)


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