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Phoronix@phoronix@masto.ai (2026-08-16 20:09:25)
AVX-512 xor_gen Continues To Look Exciting For Helping Linux RAID With Modern CPUs

Google engineer Eric Biggers back in June posted an AVX-512 optimization for Linux RAID yielding up to a 41% improvement on a modern AMD Ryzen 9 9950X (Zen 5) processor. A revised patch then put it as much as a 43% improvement for this AVX-512 optimized xor_gen() function. The code hasn't yet been merged to mainline but an updated version of it is now available...
https://www.phoronix.com/news/AVX-512-xor-gen-v4
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