A simple DNS server benchmarking tool.
Have you ever needed to troubleshoot a DNS server? Or maybe you want to do some benchmarking before trouble arises. DNSBench is a simple command-line tool that can help you with that.
With Go installed:
go install github.com/askmediagroup/dnsbench/cmd/dnsbench@latestExecute a DNS benchmark test.
Usage:
dnsbench run [command] [flags]
Flags:
-c, --count int Number of queries to attempt. [0 = run until interrupted] (default 100)
-h, --help help for run
-i, --interval duration Reporting interval. (default 5s)
-m, --max-workers int Maximum number of workers to spawn. (default 10)
-f, --names string Read query names from this file. (default "-")
-n, --nameserver string Nameserver to benchmark. (default "8.8.8.8:53")
-q, --qps int QPS target for the test run. [0 = No limit]
-r, --resolver string Resolver mode. [remote,local] (default "remote")
-w, --workers int Initial worker count. (default 1)Example 1: Benchmark DNS using local resolver:
$ echo "example.com" | dnsbench run --resolver=local --count=10
Reading names from /dev/stdin
Benchmarking...
# requests errors min [ p50 p95 p99 p999] max qps
Finished 10 requests
# latency summary
10 0 0.52 [0.68 8.49 8.49 8.49] 8.49 606.69
Concurrency level: 1
Time taken for tests: 0.02 seconds
Completed Requests: 10
Failed Requests: 0
Requests per second: 606.69 [#/sec] (mean)
Time per request: 1.64 [ms] (mean)
Fastest request: 0.52 [ms]
Slowest request: 8.49 [ms]Example 2: Benchmark a specified nameserver with a file of domains:
dnsbench run --nameserver=8.8.8.8 --names "domains_to_lookup.txt"with domains listed on individual lines of domains_to_lookup.txt, such as:
example.com
google.com
foobar.com
DNSBench is currently under active development with upcoming improvements targetting:
- Documentation
- Command-line useability
- Decoupling command-line and DNS lookup logic of source
- Testing