Need help for Calculate DNS througputs

Anand Buddhdev anandb at
Tue Jun 15 09:06:28 UTC 2021

On 15/06/2021 08:12, PRAKASH CHAND wrote:

Hi Prakash,

Look at DNSPerf. It's an open source tool for benchmarking DNS servers.
It has a component called resperf, specifically for resolvers. You could
try to use that to find out how far you can push your resolvers. Make
sure to measure the packet rate and the bandwidth from your resolvers
towards the Internet.

However, I would also caution you on the use of firewalls in front busy
resolvers. If the firewalls try to keep state for every UDP packet
traversing them, they will quickly fall over.


> Dear All, 
> Good Morning to all Bind- users. 
> I need help for calculating DNS server throughput. 
> Actually, we are planning to purchase firewall so it is required for purchasing according to load. 
> I am using RHEL, I will be thankful if someone could guide us that how we can calculate the throughput of 
> my DNS servers. I am running BIND 9.x.x. on RHEL server. 
> Thanks & regards 
> Prakash Chand 

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