[ntp:questions] Win7: ntpd adjusting time backwards
rick.jones2 at hp.com
Tue Dec 11 19:35:25 UTC 2012
David Taylor <david-taylor at blueyonder.co.uk.invalid> wrote:
> What happens if the link to the Internet is rather asymmetrical? For
> example, here I am stuck with 30 Mb/s down, but only 3 Mb/s up.
Handwaving a bit... The query and the response seem to be something
like 90 bytes (including an Ethernet header). That then is 720 bits.
At 3 Mbits/s that would be 0.24 milliseconds of transmit time. It
would then be 0.024 milliseconds on the downlink. I suspect that
asymmetry is dwarfed by either queueing delays (bufferbloat) when
either/both are active and/or the rest of the delays from your system
to the server(s).
It is not a question of half full or empty - the glass has a leak.
The real question is "Can it be patched?"
these opinions are mine, all mine; HP might not want them anyway... :)
feel free to post, OR email to rick.jones2 in hp.com but NOT BOTH...
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