esurdam / dns-benchmark

DNS Benchmark CLI

DNS Benchmark Tool

This is a simple command-line DNS benchmark tool written in Python. It allows you to measure and compare the performance of different DNS servers for a given domain.

I used it to figure out which DNS server to use on my local network.

Features

• Benchmark multiple DNS servers simultaneously
• Measure average, minimum, and maximum query times
• Easy to use command-line interface
• Works on macOS (and other Unix-like systems)

Requirements

• Python 3.6+
• dnspython library

Installation

1. Clone this repository:

   git clone https://github.com/esurdam/dns-benchmark.git
   cd dns-benchmark
   

2. Install the required Python library:

   pip3 install dnspython
   

3. Make the script executable:

   chmod +x dns_benchmark.py
   

Usage

Run the script from the command line with the following syntax:

./dns_benchmark.py <domain> <dns_server1> [dns_server2] ...

For example:

./dns_benchmark.py example.com 8.8.8.8 1.1.1.1 9.9.9.9

This will benchmark the DNS servers 8.8.8.8 (Google), 1.1.1.1 (Cloudflare), and 9.9.9.9 (Quad9) for the domain example.com.

Output

The script will output the average, minimum, and maximum query times for each DNS server. For example:

DNS Benchmark Results:
----------------------
8.8.8.8: Avg: 0.0534s, Min: 0.0412s, Max: 0.0701s
1.1.1.1: Avg: 0.0234s, Min: 0.0189s, Max: 0.0312s
9.9.9.9: Avg: 0.0634s, Min: 0.0534s, Max: 0.0823s

Contributing

Contributions are welcome! Please feel free to submit a Pull Request.

License

This project is open source and available under the MIT License.