[ntp:questions] A proposal to use NIC launch time support to improve NTP

Jonatan Walck jwalck at netnod.se
Thu Dec 13 21:34:50 UTC 2012


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On 12/13/2012 03:55 PM, Brian Utterback wrote:
> On 12/13/2012 9:45 AM, Jonatan Walck wrote:
>> The three packet limit is only for 82580 iirc, I350 and I210
>> widens the whole rx queue and can save timestamps for each and
>> every incoming packet.
> 
> I  might be wrong, but from the flowchart on the data sheet, it
> looks like it only buffers three packets in the launchtime outgoing
> queue.
> 
> Brian.
> 

Sorry, I missunderstood you earlier and replied about rx timestamping,
not LaunchTime. You might be correct here, and yes that'd have to be
taken into consideration. Right now I cannot find the flow chart
showing this limitation though, do you have a pointer?

// jwalck
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