Shane Kerr <sh...@time-travellers.org> wrote:
> At 2016-03-10 11:21:59 +0000
> Tony Finch <d...@dotat.at> wrote:
>
> > Davey Song <songlinj...@gmail.com> wrote:
> > >
> > > 1) Keep-alive does reduce latency in long time queries. It is a
> > > little surprising to see that with keep-alive, DNS over HTTP’s
> > > latency is almost the same as UDP.
> >
> > That's not unexpected on a fast link, but it would be worth estimating
> > the difference in serialization latency on slow links.
>
> Runxia did simulate latency on the link - each of the 3 columns
> represents a different delay (0, 20 msec, and 200 msec).
I didn't mean link latency, I meant the latency due to the size of the
message, e.g. 2Kbytes at 56 Kbit/s is 300ms just to serialize the message
onto the wire.
Tony.
--
f.anthony.n.finch <d...@dotat.at> http://dotat.at/
Irish Sea: Variable 3 or 4, becoming south 4 or 5. Slight. Drizzle later.
Good, occasionally poor later.
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