[ntp:questions] Tracking the drift of a GPS clock relative to a HW clock
Richard B. Gilbert
rgilbert88 at comcast.net
Wed Jan 21 17:44:57 UTC 2009
Unruh wrote:
> David Woolley <david at ex.djwhome.demon.co.uk.invalid> writes:
>
>> ryad.bek at gmail.com wrote:
>
>>> This algorithm is robust because it is based on
>>> special techniques (it uses common packets in the traces to provide
>>> synchronisation).
>
>> In the end, any such algorithm is going to have to use techniques
>> similar to ntpd or chrony's. The one advantage is that it is
>> retrospective, and therefore probably better matches chrony's linear
>> regression approach. (NTP uses a low memory, incremental algorithm.)
>
> That is why ntp has a VSZ of 4460 vs 2189 for chrony and RSS of 940 vs 748
> for chrony:-)
>
VSZ???
RSS???
It would be helpful if you would define your terms!
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