Benchmarking in Go is straightforward, but visualizing those results? That's where things get messy. When you're comparing different libraries or implementations across various workloads, staring at raw benchmark numbers just doesn't cut it. I found myself in this exact situation while working with my message queue library, varmq. I needed to compare performance across different scenarios, but existing visualization tools either didn't exist or didn't fit my needs. varmq So I built Vizb – a CLI tool that transforms Go benchmark results into beautiful, interactive HTML charts with a single command. Vizb The Magic is in the Simplicity go test -bench . -run=^$ -json | vizb -o output.html go test -bench . -run=^$ -json | vizb -o output.html That's it. One command, and you get: Interactive HTML charts showing execution time, memory usage, and allocations Responsive design that works on any device Export capability – download charts as PNG images directly from your browser Smart grouping that automatically organizes your benchmarks by workload and subject Interactive HTML charts showing execution time, memory usage, and allocations Interactive HTML charts Responsive design that works on any device Responsive design Export capability – download charts as PNG images directly from your browser Export capability Smart grouping that automatically organizes your benchmarks by workload and subject Smart grouping Key Features That Actually Matter Multiple Metrics in One View: Compare execution time, memory usage, and allocation counts side by side. Multiple Metrics in One View Customizable Units: Display metrics in your preferred units (ns/μs/ms/s for time, B/KB/MB/GB for memory). Customizable Units Flexible Input: Works with files or piped input – whatever fits your workflow. Flexible Input JSON Output: Need the data in a different format? Use --format json to get structured data instead of HTML. JSON Output --format json Real-World Example Here's how Vizb automatically groups your benchmarks. If you have: BenchmarkEncoder/small/json BenchmarkEncoder/small/msgpack BenchmarkEncoder/large/json BenchmarkEncoder/large/msgpack BenchmarkEncoder/small/json BenchmarkEncoder/small/msgpack BenchmarkEncoder/large/json BenchmarkEncoder/large/msgpack Vizb creates charts where: Test: Encoder Workloads: small, large Subjects: json, msgpack Test: Encoder Test Workloads: small, large Workloads Subjects: json, msgpack Subjects The result? Clean, organized charts that make performance differences immediately obvious. Why It Matters When you're optimizing code or choosing between libraries, you need insights, not raw numbers. Vizb turns your benchmark data into actionable visualizations that help you make better decisions faster. Check it out: github.com/goptics/vizb github.com/goptics/vizb Check out the live chart benchmarks: varmq-benchmark varmq-benchmark Install it with: go install github.com/goptics/vizb go install github.com/goptics/vizb Happy benchmarking! 🚀
