Re: [Last-Call] [Ntp] Secdir last call review of draft-ietf-ntp-chronos-16

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On Tue, 11 Jul 2023 at 09:21, Tal Mizrahi <tal.mizrahi.phd@xxxxxxxxx> wrote:
Specifically, this concern about Khronos is addressed in the current
version of the draft (as you indeed noted):
   While Khronos
   queries around 3 times more servers per polling interval than NTP,
   Khronos's polling interval can be longer (e.g., 10 times longer) than
   NTPv4, thereby, minimizing the load on NTP servers and the
   communication overhead.  Moreover, Khronos's random server selection
   may even help to distribute queries across the whole pool.

As I noted to Neta previously, that calculation ignores Khronos' "panic mode" behavior of querying hundreds of servers simultaneously.  I do understand the expectation is that panic mode is rare  Nonetheless, rarely is not the same as never, as implied by repeatedly ignoring it in these discussions and in the draft paragraph quoted above.

Cheers,
Dave Hart 
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