DNS load tool 
Simple script to load test DNS resolution.
Either with a fixed number of concurrent lookups (--max) over a period of time (--duration)
or a one-time measurement of ramping up (--step) concurrent lookups up to a maximum (--max)
Usage
usage: dnsload [-h] --domain DOMAIN [--max MAX]
(--duration DURATION | --step STEP) [--wait WAIT] [--raw]
[--ns NS] [--verbose]
DNS Load
optional arguments:
-h, --help show this help message and exit
--domain DOMAIN Domain to lookup
--max MAX Max concurrent lookups (default: 100)
--duration DURATION For how long to load test
--step STEP Step size
--wait WAIT Time to wait between lookup rounds
--raw Perform RAW DNS lookups, bypass system libraries
--ns NS Nameserver to query when doing RAW lookup (default:
resolv.conf)
--verbose Verbose logging
Example
Test DNS resolution from 100 to 1000 concurrent lookups in steps of 100
$ dnsload --domain example.com --max 1000 --step 100
Test DNS resolution for an hour with 100 concurrent lookups
$ dnsload --domain example.com --max 100 --duration 3600
Test RAW DNS resolution against nameservers in /etc/resolv.conf for an hour with 100 concurrent lookups
$ dnsload --domain example.com --max 100 --duration 3600 --raw
Test RAW DNS resolution against 1.1.1.1 for an hour with 100 concurrent lookups
$ dnsload --domain example.com --max 100 --duration 3600 --raw --ns 1.1.1.1
Using Docker
$ docker run --rm -it lloesche/dnsload --domain example.com --max 100 --step 10
Docker Pull Command
docker pull lloesche/dnsload