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List:       ntp-hackers
Subject:    Re: [ntp:hackers] Fw:  Questions about CLOCK_ALLAN was changed
From:       "David L. Mills" <mills () udel ! edu>
Date:       2007-08-31 15:10:32
Message-ID: 46D82F68.5020209 () udel ! edu
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Naoki,

The scale of the CLOCK_ALLAN was changed to a logarithmic scale to align 
with the poll interval scale. It should have no effect on the algorthms, 
which function as before.

Dave

Naoki Harigai wrote:

> Dear Dave,
>
> I want to know your opinion about this question.
> If you think that information is insufficient, I examine it.
>
>
> Best regards,
> Naoki
>
>
> Begin forwarded message:
>
> Date: Fri, 24 Aug 2007 19:56:00 +0900
> From: Naoki Harigai <naoki_harigai@montavista.co.jp>
> To: hackers@lists.ntp.org
> Subject: [ntp:hackers] Questions about CLOCK_ALLAN was changed
>
>
> Dear all,
>
> I want to know the reason why CLOCK_ALLAN was changed when version up 
> to ntp-4.2.
> A change of this value seems to cause much falseticker.
> I cannot judge this change is a problem or a enhancement of feature.
> Is there a reason why I changed CLOCK_ALLAN?
>
> ntp-4.1.2(ntpd/ntp_loopfilter.c)
> #define CLOCK_ALLAN 10 /* min Allan intercept (log2 s) */
>
> ntp-4.2.4p3(ntpd/ntp_loopfilter.c)
> #define CLOCK_ALLAN 1500. /* compromise Allan intercept (s) */
>
>
> F.Y.I.
>
> I sent same question to question list.
> https://lists.ntp.org/pipermail/questions/2007-August/015258.html
>
> Best regards,
> Naoki
> _______________________________________________
> hackers mailing list
> hackers@lists.ntp.org
> https://lists.ntp.org/mailman/listinfo/hackers
>
>

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