• Martin Schwidefsky's avatar
    RAID/s390: add SIMD implementation for raid6 gen/xor · 474fd6e8
    Martin Schwidefsky authored
    Using vector registers is slightly faster:
    
    raid6: vx128x8  gen() 19705 MB/s
    raid6: vx128x8  xor() 11886 MB/s
    raid6: using algorithm vx128x8 gen() 19705 MB/s
    raid6: .... xor() 11886 MB/s, rmw enabled
    
    vs the software algorithms:
    
    raid6: int64x1  gen()  3018 MB/s
    raid6: int64x1  xor()  1429 MB/s
    raid6: int64x2  gen()  4661 MB/s
    raid6: int64x2  xor()  3143 MB/s
    raid6: int64x4  gen()  5392 MB/s
    raid6: int64x4  xor()  3509 MB/s
    raid6: int64x8  gen()  4441 MB/s
    raid6: int64x8  xor()  3207 MB/s
    raid6: using algorithm int64x4 gen() 5392 MB/s
    raid6: .... xor() 3509 MB/s, rmw enabled
    Signed-off-by: 's avatarMartin Schwidefsky <schwidefsky@de.ibm.com>
    474fd6e8