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List: unbound-users
Subject: Re: High latency setting optimization
From: James Cloos via Unbound-users <unbound-users () unbound ! net>
Date: 2018-05-26 21:52:49
Message-ID: m3efhygk3y.fsf () carbon ! jhcloos ! org
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>>>>> "FL" == Florian Lohoff via Unbound-users <unbound-users@unbound.net> writes:
FL> We are running multiple unbound caches behind very long latency
FL> sat links. We are seeing RTT of at least 1000ms.
...
FL> I have already seen jostle-timeout. I am pretty shure prefetching
FL> has a huge impact.
Back when I only had a dialup modem connection to the net I set those
jostle, prefetching, my own copy of the root and arpa zones, plus:
cache-min-ttl: 7200.
Some may argue against that last one.
Early versions of unbound didn't work too well on such a link, but it
didn't take too long before it felt at least as fast as using a remote
resolver.
-JimC
--
James Cloos <cloos@jhcloos.com> OpenPGP: 0x997A9F17ED7DAEA6
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