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 get -u github.com/askcom/dnsbench/cmd/dnsbenchdnsbench <nameserver> [flags]
-concurrency int
Numer of concurrent requests (default 10)
-count int
Number of requests to make (default 1000)
-interval duration
Reporting interval (default 5s)
-local
Use local resolver
-names string
File containing names to request (default "-")
-qps int
QPS to attempt for each worker (0 for no limit)Example 1: Benchmark DNS using local resolver:
$ echo "example.com" | dnsbench -local
Reading names from /dev/stdin
Benchmarking...
# requests errors min [ p50 p95 p99 p999] max qps
Finished 1000 requests
# latency summary
1000 0 2.21 [6.31 24.12 36.80 72.35] 72.35 639.33
Concurrency level: 10
Time taken for tests: 1.56 seconds
Completed Requests: 1000
Failed Requests: 0
Requests per second: 639.33 [#/sec] (mean)
Time per request: 8.23 [ms] (mean)
Fastest request: 2.21 [ms]
Slowest request: 72.35 [ms]Example 2: Benchmark a specified nameserver with a file of domains:
dnsbench <nameserver ip> -names "domains_to_lookup.txt"
Reading names from domains_to_lookup.txt
Benchmarking...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
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