As Rob says, the DoH versus DoT performance situation is complicated, and I don't think that this text is a great summary of the situation. There are a lot of factors to consider here (connection setup time, retransmission algorithms, etc.) but I would not expect DoQ to have performance characteristics much like Do53 at all. -Ekr
On Thu, Mar 19, 2020 at 5:15 PM Rob Sayre <[email protected]> wrote: > On Thu, Mar 19, 2020 at 3:53 PM Christian Huitema <[email protected]> > wrote: > >> On 3/6/2020 7:30 AM, Paul Hoffman wrote: >> >> > Thank you for continuing this interesting work. However, a reader might >> not realize that many other folks would prefer DNS/HTTPS/QUIC until the get >> all the way to Section 3.4. Also, the title of that section seems a bit >> unbalanced, given that the text says that people might prefer >> DNS/HTTPS/QUIC for reasons other than hiding from firewalls. >> > >> > For a future version of this draft, please consider moving the >> comparison to DNS/HTTPS/QUIC, and the discussion of not knowing which one >> folks will prefer, up to the Introduction. That would leave Section 3.4 >> just about the stated design goal. >> >> Yes. I would like to end up with just a spec, and leave the discussion >> about DoT vs DoQ vs DoH vs DoH3 to some other document... >> > > The introduction says: > > "DNS over QUIC (DoQ) has privacy > properties similar to DNS over TLS (DoT) specified in RFC7858, and > performance characteristics similar to classic DNS over UDP." > > I think you might want to drop this text on performance characteristics, > since it seems to imply DNS over UDP has better performance characteristics. > > At least for DoH, some data seems to show that it vastly outperforms DNS > over UDP after the 80th percentile of latency, while being just slightly > slower below the 80th percentile. > > Source: https://youtu.be/_ZoyxE0bLp8?t=4839 (Ekr talk at DNS-OARC). > > thanks, > Rob > > > > _______________________________________________ > dns-privacy mailing list > [email protected] > https://www.ietf.org/mailman/listinfo/dns-privacy >
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