DNS Benchmark opensource is a multi-threaded, professional-grade benchmarking utility designed to evaluate DNS resolver latency and reliability. Built with Python 3 and CustomTkinter, it provides an interactive, Google Sheets-style interface to analyze network performance across multiple providers simultaneously.
- High-Precision Sampling: Performs 50 requests per server to calculate accurate Min, Max, Avg latency, and Jitter.
- Parallel Execution: Utilizes a
ThreadPoolExecutorto benchmark up to 15 servers concurrently, significantly reducing wait times. - Dynamic Provider Identification: Automatically resolves the Owner (ISP/Provider name) in real-time using Reverse DNS (PTR records).
- Interactive Table: Click any column header (OWNER, AVG, RELIABILITY, etc.) to sort results in ascending or descending order.
- Automated Cache Management: Automatically manages
servers.txtwithin a dedicated./cache/directory, following standard Linux/Windows path conventions. - Visual Progress Tracking: Real-time progress bar and status-based color coding (Green/Orange/Red).
Upon launching, you will see the control sidebar and the results panel.
-
Start Benchmark: Clears previous data and begins a new parallel test.
-
Stop Benchmark: Gracefully interrupts the current thread pool.
-
Manage IPs: Opens a sub-window to add or delete DNS servers from your list.
Just like in Google Sheets, click on the column headers to find the fastest or most reliable server.
- Example: Click AVG once to see the fastest servers at the top. Click again to see the slowest.
Add your local gateway (e.g., Pi-hole, AdGuard Home) or enterprise resolvers.
- Python 3.12+ (Tested on Fedora 43 & Windows 11)
- Network access to perform DNS queries (UDP Port 53)
Clone the repository and install the required dependencies:
# Clone the repo
git clone https://github.com/mariorpn/dns-benchmark-opensource.git
cd dns-benchmark-opensource
# Install dependencies
pip install customtkinter dnspythonpython main.py.
├── main.py # Main Application Logic
└── cache/ # Auto-created directory
└── servers.txt # Persistent list of DNS IPs
| Status | Description | Color |
|---|---|---|
| ONLINE | Reliable connection with >90% success rate. | Green |
| UNSTABLE | Latency detected or <90% success rate. | Orange |
| OFFLINE | No response from the resolver. | Red |
Since you are on Fedora 43, if you encounter issues with the UI scaling, you can force the scale factor by setting the environment variable before running:
export GDK_SCALE=1 && python main.py
Note: For a production-ready binary version (Windows/Linux/Android) using Rust, please refer to the rust-v1 branch (Work in Progress).