[ntp:questions] NTP_MAXCLOCK in ntp.h
Mischanko, Edward T
Edward.Mischanko at arcelormittal.com
Tue Dec 11 07:50:46 UTC 2012
> -----Original Message-----
> From: questions-
> bounces+edward.mischanko=arcelormittal.com at lists.ntp.org
> [mailto:questions-
> bounces+edward.mischanko=arcelormittal.com at lists.ntp.org] On
> Behalf Of unruh
> Sent: Tuesday, December 11, 2012 1:36 AM
> To: questions at lists.ntp.org
> Subject: Re: [ntp:questions] NTP_MAXCLOCK in ntp.h
>
> On 2012-12-11, Mischanko, Edward T
> <Edward.Mischanko at arcelormittal.com> wrote:
> > Please tell me why when watching my client with NTP Time
> Server Monitor by Meinberg, my client does not honor the
> NTP_MAXCLOCK setting in the ntp.h file.
> >
>
> Why do you thing your client does not honour that setting? And
> what do
> you think this setting does?
>
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[Mischanko, Edward T]
I believe the setting limits the maximum amount of peers that are selected as candidates for averaging?
/*
* Selection algorithm tuning parameters
*/
#define NTP_MINCLOCK 3 /* min survivors */
#define NTP_MAXCLOCK 10 /* max candidates */
#define MINDISPERSE .001 /* min distance */
#define MAXDISTANCE 1.5 /* max root distance (select threshold) */
#define CLOCK_SGATE 3.0 /* popcorn spike gate */
#define HUFFPUFF 900 /* huff-n'-puff sample interval (s) */
#define MAXHOP 2 /* anti-clockhop threshold */
#define MAX_TTL 8 /* max ttl mapping vector size */
#define BEACON 7200 /* manycast beacon interval */
#define NTP_MAXEXTEN 2048 /* max extension field size */
#define NTP_ORPHWAIT 300 /* orphan wair (s) */
/*
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