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LunaticRv
newbie
Topic Author
Posts: 40
Joined: Mon Dec 31, 2018 8:50 am

Best way to observe DNS QPS

Sat May 20, 2023 4:09 pm

Hello,

I am using GoogleDNS for my customers and planning to install my own HA recursive DNS servers. But before doing that I would like to measure my networks DNS queries per second.

What I did/tried is;
ip/firewall/filter/add chain=forward protocol=udp src-port=53 action=passthrough connection-state=new,established,related 

But I am not sure if the packet rate gives me what I want because it is quite higher than I expect, is there any suggestions about achieving what I want?

Thanks in advance.
 
optio
Long time Member
Long time Member
Posts: 655
Joined: Mon Dec 26, 2022 2:57 pm

Re: Best way to observe DNS QPS

Sat May 20, 2023 5:50 pm

You can use queryperf for that, https://gitlab.isc.org/isc-projects/queryperf
 
LunaticRv
newbie
Topic Author
Posts: 40
Joined: Mon Dec 31, 2018 8:50 am

Re: Best way to observe DNS QPS

Sun May 21, 2023 8:49 pm

Thank you, but I think this is not suitable for my case, I would like to measure it before installing my resolver. If its passing 1500 QPS and less than 2000 QPS then I will just create a ticket to increase my QPS limit to Google.

But before doing that I need to figure out exact way of measuring my total QPS :)
 
optio
Long time Member
Long time Member
Posts: 655
Joined: Mon Dec 26, 2022 2:57 pm

Re: Best way to observe DNS QPS

Sun May 21, 2023 9:51 pm

You can specify any DNS server to queryperf with -s argument, why not then set Google DNS IP and observe performance? https://kb.isc.org/docs/aa-00561/

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