this post was submitted on 19 Feb 2025
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Affected CPUs: AVX-512 capable CPUs. Intel Xeon, Zen 4 AMD Ryzen and EPYC and up.
Affected function: UYVY to YUV422 format conversion (pixel-level color encoding).
Speedup: 18/10.98 = 1.64x (Since all AVX512 cpus should support and previously have used avx2(56)).
Apparently as part of an ongoing series of rewrites, they made a color encoding conversion function run 64% faster on server CPUs and somewhat recent AMD CPUs
Good news for my server!