個人的な闇の事件簿

ロシアの文豪ドストエフスキーの罪と罰。殺人を犯す主人公は自らを正当化する為こう考えた。選ばれた非凡人は、新しい社会の成長のためなら、社会道徳を踏み外す権利を持つ

Linux RAID6モジュールでSIMDベンチマーク

 1コアあたりだったような気がするが、忘れた。

TERRAMASTER F5-221 intle celeron J3355 Apollo Lake /Goldmont

[ 6.203022] md/raid1:md127: active with 1 out of 2 mirrors
[ 7.178292] raid6: sse2x4 gen() 8230 MB/s
[ 7.246291] raid6: sse2x4 xor() 1420 MB/s
[ 7.314289] raid6: sse2x2 gen() 8898 MB/s
[ 7.382288] raid6: sse2x2 xor() 5173 MB/s
[ 7.450287] raid6: sse2x1 gen() 7412 MB/s
[ 7.518291] raid6: sse2x1 xor() 4612 MB/s
[ 7.518292] raid6: using algorithm sse2x2 gen() 8898 MB/s
[ 7.518293] raid6: .... xor() 5173 MB/s, rmw enabled
[ 7.518294] raid6: using ssse3x2 recovery algorithm

Rasberry pi 4B Broadcom BCM2711 Cortex-A72

5.776907] md/raid1:md127: active with 1 out of 2 mirrors
[ 7.149619] raid6: neonx8 gen() 1851 MB/s
[ 7.319611] raid6: neonx8 xor() 1239 MB/s
[ 7.489607] raid6: neonx4 gen() 1875 MB/s
[ 7.659609] raid6: neonx4 xor() 1270 MB/s
[ 7.829622] raid6: neonx2 gen() 1603 MB/s
[ 7.999606] raid6: neonx2 xor() 1203 MB/s
[ 8.169607] raid6: neonx1 gen() 1191 MB/s
[ 8.339611] raid6: neonx1 xor() 940 MB/s
[ 8.509611] raid6: int64x8 gen() 911 MB/s
[ 8.679625] raid6: int64x8 xor() 520 MB/s
[ 8.849619] raid6: int64x4 gen() 1109 MB/s
[ 9.019620] raid6: int64x4 xor() 579 MB/s
[ 9.189626] raid6: int64x2 gen() 975 MB/s
[ 9.359610] raid6: int64x2 xor() 514 MB/s
[ 9.529619] raid6: int64x1 gen() 743 MB/s
[ 9.699630] raid6: int64x1 xor() 384 MB/s
[ 9.699635] raid6: using algorithm neonx4 gen() 1875 MB/s
[ 9.699640] raid6: .... xor() 1270 MB/s, rmw enabled
[ 9.699645] raid6: using neon recovery algorithm