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OpenBSD IO Benchmarking: How Many Jobs Are Worth It?

Rafael Sadowski

Based on this test script I ran a simple benchmark between Linux version 6.12.21-amd64( debian-kernel@lists.debian.org) (x86_64-linux-gnu-gcc-14 (Debian 14.2.0-19) and OpenBSD 7.7 (GENERIC.MP)#624: Wed Apr 9 09:38:45 MDT 2025 deraadt@amd64.openbsd.org on ThinkPad X1 Carbon Gen 10 (14" Intel). I wanted to get a quick but solid overview of how well OpenBSD handles disk I/O across increasing thread counts. An upcoming test I plan to run will involve RW performance on USB sticks, which could offer more insight as we stress more subsystems.

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