[ntp:questions] Have Pi, have GPS = low powered NTP server?

Dave Hart hart at ntp.org
Fri Jun 8 00:23:04 UTC 2012


On Fri, Jun 8, 2012 at 12:17 AM, Brian Utterback
<brian.utterback at oracle.com> wrote:
> On 6/7/2012 7:35 PM, Dave Hart wrote:
>>
>> On Thu, Jun 7, 2012 at 10:47 PM, Brian Utterback
>> <brian.utterback at oracle.com>  wrote:
>>>
>>> (Some day it would be nice if "mrv&0&9" worked the way you expected, but
>>>
>>> would you believe "rv 0" and "rv anything-else" call entirely different
>>> functions? )
>>
>> "rv 0" means system variables.
>>
>> "rv&0" is not defined -- ampersand shorthand for association IDs start
>> with&1.
>>
>>
>> FYI, older versions of ntpq require lpeers, lassoc, or similar before
>> &  references work.  Newer ones (including 4.2.6 I believe) always
>> support&  references and will silently first issue lassoc to learn the
>> association IDs if needed.
>
> Quite. I meant "rv 0". My point is that I would really like "mrv &0 &99" to
> pretty much do "rv 0" followed in turn by each of the "rv associd" choices.
> I guess you are just pointing out that they are kind of different?

Right.  "rv" takes an association ID.  0 is reserved special case of
systemwide variables, any other number indicates variables specific to
the given association number.  &0 and 0 are not synonymous here.  &0
would mean the zeroeth association ID known to the server, but &
references count like humans starting at 1.  So IMO &0 should
complain, though one could redefine it to be a long way of writing 0.

Cheers,
Dave Hart


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