[Dnsmasq-discuss] DNSMasq slow.
Matus UHLAR - fantomas
uhlar at fantomas.sk
Thu Oct 1 10:35:43 BST 2020
On 30.09.20 21:41, Ken D'Ambrosio wrote:
>Hi, all. I've got a RasPi 4, with 4 GB of mostly empty RAM, acting as
>my firewall/gateway, with DHCP and DNSMasq running. And performance
>of it is... odd. E.g., I have an entry in /etc/hosts on the Pi that I
>figured would be served nearly instantly, since no external lookup is
>required, and, out of ten lookups from the same host that sits on the
>common network, I range from about .2 seconds to 7. (Note that it
>seems to fluctuate throughout the lookups, not just faster after the
>first lookup fills the cache or anything.) Lookups for hosts not in
>/etc/hosts seem to be roughly as long as well.
>
>Not sure how to troubleshoot this. Any suggestions would be greatly
>appreciated.
running 'tcpdump port 53' could help you find out.
I can guess that clients are asking for a fqdns (because in DNS you MUST ask
for fqdns) your dnsmasq is not accepting as local
--
Matus UHLAR - fantomas, uhlar at fantomas.sk ; http://www.fantomas.sk/
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