[  498.625998] raid6: int32x8  xor()   726 MB/s
[  498.625999] raid6: using algorithm mmxx2 gen() 4312 MB/s
[  498.626001] raid6: using intx1 recovery algorithm
[  498.698735] xor: measuring software checksum speed
[  498.737985]    pIII_sse  :  5725.000 MB/sec
[  498.777983]    prefetch64-sse:  5790.000 MB/sec
[  498.777986] xor: using function: prefetch64-sse (5790.000 MB/sec)
[  498.916435] Btrfs loaded
[ 2243.529069] hub_port_connect: 27 callbacks suppressed
[ 2243.529082] usb usb1-port1: connect-debounce failed