内核启动期间有一次跳过：
Jul 19 14:07:02 deetabokkusu kernel: [ 2.874776] hub 1-1.4:1.0: USB hub found
Jul 19 14:07:02 deetabokkusu kernel: [ 2.877993] hub 1-1.4:1.0: 4 ports detected
Jul 19 14:07:02 deetabokkusu kernel: [ 94.080339] raid6: sse2x1 gen() 858 MB/s
Jul 19 14:07:02 deetabokkusu kernel: [ 94.128306] raid6: sse2x1 xor() 2371 MB/s
Jul 19 14:07:02 deetabokkusu kernel: [ 94.176324] raid6: sse2x2 gen() 1730 MB/s
Jul 19 14:07:02 deetabokkusu kernel: [ 94.224328] raid6: sse2x2 xor() 2816 MB/s
Jul 19 14:07:02 deetabokkusu kernel: [ …