[time-nuts] SLIP vs Ethernet for NTP
hmurray at megapathdsl.net
Mon Oct 24 01:28:55 EDT 2011
>> I think gig ethernet has a higher delay for smaller packets (ntp's udp
>> datagram is tiny) than 100mbit ethernet.
> There is very little to support this claim.
Most gig-ethernet chips try to save CPU cycles by batching interrupts. There
is usually some way to turn it off. I don't have any numbers handy, but I
wouldn't be surprised if that made the observed round trip times slower than
100 meg ethernet.
Most UARTs have similar logic.
These are my opinions, not necessarily my employer's. I hate spam.
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