I'm still trying to figure out how I could tell whether prefetch
makes things better or worse, since the main thing I've learned
from the few DNS cache simulations I've done is that intuition is
not a good guide.
The net effect it will have is that the average latency querying for
the prefetched domains will be lower at the cost of a (max 10% with
current values) bigger cache size and added traffic.
I'm running unbound with verbosity 1 logging. Any suggestions?
Verbosity 4 will give details and lots of debugging info as well so
you don't really want to run like that for a long time.
My intuition was (based on experiences from measurements on caches)
that the effect wouldn't been spectacular. That was confirmed by the
people who asked us for it.
jaap
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