Andrew Healey • 7/31/2025

Maybe the Fastest Disk Usage Program on macOS

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The article details the creation of 'dumac,' a high-performance disk usage analysis tool for macOS. The author explains how using Tokio tasks and the macOS-specific getattrlistbulk syscall, combined with concurrent processing, resulted in a tool that is 6.4x faster than the standard 'du' command and 2.58x faster than 'diskus' in benchmarks on a warm disk cache.

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#performance optimization #rust #Maco
Maybe the Fastest Disk Usage Program on macOS

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