[time-nuts] Soekris without a GPS receiver.

Paul tic-toc at bodosom.net
Sun Dec 28 13:06:28 EST 2014

On Sun, Dec 28, 2014 at 2:16 AM, David J Taylor <
david-taylor at blueyonder.co.uk> wrote:

> No, I haven't replaced the crystal.  I was hoping to see how well it
> worked without.

No better than any other system given similar environments.

> Would it work any better than the Raspberry Pi cards I am using today

There are two functions:
1) The very high resolution discipline of the system clock.  Doing this
today one would use a capture or system that can be externally clocked.
2) Time transfer.  That's not going to be any better than any other non-PTP
system.  The limitation is the network not the server.

So the answer to the "better than" question is probably not enough to
matter.  Either in offset or jitter.

> (which seem considerably worse with the new tickless kernel than the
> self-compiled non-tickless one I was using before)?

Implementation issues.

>   Would it work better than a server running Linux?


>   The net4501 had a good reputation in its time.

But not for reasons recently discussed on ntp:questions.  See item 2 above.

> The non-standard implementation of NTPns is putting me off.

I don't believe NTPns is better enough at timekeeping to fret about.

I've avoided asking why you're doing this because -- to misquote Yoda --
"Do nor do not, there is only try"  But if you're not switching out the
system clock it doesn't really seem like either a time-nut or ntp-nut

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