[ntp:questions] Very rapid polling

Richard B. Gilbert rgilbert88 at comcast.net
Sun Feb 15 17:56:47 UTC 2009

Unruh wrote:
> Steve Kostecke <kostecke at ntp.org> writes:
>> On 2009-02-14, Unruh <unruh-spam at physics.ubc.ca> wrote:
>>> gary.limanapier at elisys.co.uk writes:
>>>> The only way we can stop it is to disable W32Time process on the
>>>> Tablets, but this then leaves them unsynchronised. Still searching for
>>>> a solution?
>>> So this definitely sounds like a bug of some kind in the Windows
>>> server's ntp code. Are they running the ntpd reference implimentation
>>> or what ntp software are they running?
>> w32time ... see the quoted text from the OP.
> It is w32 time on the tablets, but they are not the problem, the server is.
> It is the server, he said, which pumps out  packets trying to change the
> polling interval of the clients  every 300ms. Thus it
> is the server's program which one needs to look into. At least that was how
> I read the post.
> Note that one could surely install ntpd onto the tablets instead of
> W32Time.
> to keep them synchronized.

What kind of server controls the client's polling interval?  The server 
can send a "kiss of death" packet and a compliant implementation is 
supposed to stop polling altogether!  This does not seem, to me, to be 
quite the same as changing the client's polling interval!

At the very least, someone has an extremely limited, or totally 
incorrect, understanding of what is going on.

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