[time-nuts] PTPv2 grandmaster with a Z3805A?

[Wojciech Owczarek]

On 20 August 2013 21:16, Poul-Henning Kamp <phk at phk.freebsd.dk> wrote:

> You never should, for precision timekeeping, for a host of technical
> hacks, all outside your control.
>

I brought up TSC only as a, to me, better alternative to HPET / ACPI.

Of course it's not good enough for serious timekeeping, no "mostly
software" clock is.


> support for timing electrical signals
> using the same free-running counter as used for the PTP packets.


Sounds interesting. Can you elaborate? Does the card then run its own clock?

>
>

but it's the best chip there is right now


OK, different price range, but do you think it trumps the likes of
SolarFlare's 10GE
adapters with dedicated OCXOs, or copper-only cards with OCXOs like
Oregano's,
or other dedicated timing NICs? What makes it stand out so much - is it
just that
it supports all that's needed without being marketed as a precision timing
NIC?

Best regards
Wojciech
-- 
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Wojciech Owczarek