[ntp:questions] ntpdate.c unsafe buffer write

Maarten Wiltink maarten at kittensandcats.net
Wed Feb 13 10:42:23 UTC 2008


"David L. Mills" <mills at udel.edu> wrote in message
news:fots64$2g7$1 at scrotar.nss.udel.edu...

>>> No, there is no random delay at startup. Each association starts one
>>> second after the previous one. The random backoff occurs only after
>>> a step.
>>
>> Is there also a random backoff after an increase of the polling
>> interval?

> No. However, there is a small dither of a few percent at all poll
> intervals to resist self-synchronization.

Wouldn't that be a nice feature to add? If it's currently polling a
server on, say second 100 (reckoned externally) of 256, to go to
either 100 _or 356_ of 512.

I understand that there are already some random waits in the client
code and Internet servers are well protected by random noise. But
for large numbers of clients in a uniform environment that were all
started at about the same time, is there any way they tend to
naturally disperse across the final 1024s polling interval?

Groetjes,
Maarten Wiltink





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