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To be fair, FreeBSD's NUMA support is nothing to write home about, and we tend to avoid NUMA hardware (though I have done a cool hack to improve VM scaling using fake NUMA domains that I really need to upstream).

SMP scalability in general is far ahead of OpenBSDs the last time I looked, as is device support for 100G NICs, NVME storage, etc.

The performance monitoring is also far ahead on FreeBSD, with tools like Dtrace, Intel's PCM tools, and Intel's VTune available for FreeBSD.

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