go-bench

A simple Go benchmarking tool to measure optimal goroutine counts for CPU and memory-intensive operations.

Installation

Install directly from GitHub

go install github.com/lab1702/go-bench@latest

Build from source

git clone https://github.com/lab1702/go-bench.git
cd go-bench
go build

Usage

# Run both CPU and memory benchmarks (default)
go-bench

# Run only CPU benchmark
go-bench -t cpu

# Run only memory benchmark  
go-bench -t memory

# Adjust test duration (in seconds)
go-bench -d 5

Command-line Options

• -t : Type of test to run (cpu, memory, or both). Default: both
• -d : Duration of each test configuration in seconds. Default: 10

What it does

The tool benchmarks your system with different goroutine counts to find the optimal configuration:

• 1 goroutine (baseline single-threaded performance)
• Logical CPUs / 2
• Logical CPUs
• Logical CPUs * 1.5
• Logical CPUs * 2

For each configuration, it measures:

• Operations per second
• Total operations completed
• Speed increase compared to single goroutine
• CPU ratio (goroutines / Logical CPUs)

Output

The tool provides:

• Real-time progress during benchmarking
• Detailed results table for each configuration
• Summary of optimal configuration
• Performance comparison against single-threaded baseline

Requirements

• Go 1.25 or higher

License

MIT License - see LICENSE file for details