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[ntpwg] Antw: Re: call for adoption (draft-dfranke-ntp-data-minimization)

"Ulrich Windl" <Ulrich.Windl@rz.uni-regensburg.de> Thu, 30 March 2017 06:06 UTC

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Date: Thu, 30 Mar 2017 08:06:31 +0200
From: Ulrich Windl <Ulrich.Windl@rz.uni-regensburg.de>
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Subject: [ntpwg] Antw: Re: call for adoption (draft-dfranke-ntp-data-minimization)
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>>> Daniel Franke <dfoxfranke@gmail.com> schrieb am 29.03.2017 um 17:47 in
Nachricht
<CAJm83bDN64c-a7Q7kE1YO264GBPU1WAn--4soFFTnskAsL1mqQ@mail.gmail.com>:
> On 3/29/17, Greg Dowd <Greg.Dowd@microsemi.com> wrote:
>> IIRC, there is a randomizer of a second or two attached to the calculation
>> of the next poll in ntpd?
> 
> IIRC you're correct, but the randomization is some number of whole
> seconds. The fractional part of the second is determined by whenever
> the SIGALRM happens to come in, which is not random. Anyhow, I think

Actually I think that part is (depending on the number of fractional digits you look at) actually more random than the rest. With today's CPUs it almost unpredictable to estimate the atual number of cycles a sequence of instructions takes. Do you have real-life statistics material to proove your claims?

> this is clearly out-of-scope for the IETF and should be taken to NTP
> implementations' respective development lists.
> _______________________________________________
> ntpwg mailing list
> ntpwg@lists.ntp.org 
> http://lists.ntp.org/listinfo/ntpwg 




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