> > Is this an artifact of the -P2 changes or was the use of RTT dropped
> > for some other reason?
>
> You didn't say which version you were running.
>
> I'd be quite surprised if this were an artifact of the -P1 and -P2
> changes. I'd be less surprised if it were a bug introduced in 9.5.0.
>
> --
> Evan Hunt -- [EMAIL PROTECTED]
> Internet Systems Consortium, Inc.
RTT estimates work well with authoritative servers.
The best I expect to get out of rtt and forwarders is whether
the forwarder is up or not. If there was some way to
accurately work out which answers come from the cache and
which first required recursion then rtt times would home
in the closest forwarder.
It takes 110ms to get a answer from A via F1 and F2.
R 10ms F1 100ms A
R 100ms F2 10ms A
Cache talking to caches don't always get enough second level
cache hits to make a statistical difference to the rtt estimate.
Mark
--
Mark Andrews, ISC
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742 INTERNET: [EMAIL PROTECTED]
