Feature Freeze Friday

Gary E. Miller gem at rellim.com
Fri Sep 15 23:15:44 UTC 2017


Yo Hal!

On Fri, 15 Sep 2017 15:21:32 -0700
Hal Murray <hmurray at megapathdsl.net> wrote:

> >> I think you should revert the long double change and wait until
> >> post-release to clean up that area - not just the precision part
> >> but the whole clock adjusting area.  
> 
> > It fixed a bunch of issues and starting over could take weeks.  
> 
> What problems did it fix?

It fixed many problems with accuracy.  I suggest looking at the change logs
if you want details.

> Do you think we need more than microsecond accuracy when making the
> first long jump?

ntpd NEVER had better than micro second accuracy until the change.

Common wisdom said it did, but the precision enhancements in ntpq and ntpmon
showed otherwise.

> Are there other cases when loss of precision happens?

Several.  timespec(64) will smoke a lot out.

RGDS
GARY
---------------------------------------------------------------------------
Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703
	gem at rellim.com  Tel:+1 541 382 8588

	    Veritas liberabit vos. -- Quid est veritas?
    "If you can’t measure it, you can’t improve it." - Lord Kelvin
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