Jeff Geerling • 5/27/2026

I patched iozone for better disk benchmarks on modern macOS

This article describes how the author patched the iozone disk benchmarking tool to compile and run on modern macOS, specifically Apple Silicon Macs running macOS 26. The author explains their motivation, the process of fixing compilation errors using a local Qwen AI model, and submitting patches to the maintainer. The fix is included in iozone versions 509 and 510. The article includes instructions for downloading, compiling, and running iozone on macOS, along with a sample benchmark output. It is a technical guide focused on software development, system tools, and macOS compatibility.

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#c programming #Maco #Apple Silicon