In illumos, the equivelent command `iostat -xc` returns a much nicer format
Before:
```
# iostat -xC 1
extended device statistics cpu
device r/s w/s kr/s kw/s ms/r ms/w ms/o ms/t qlen %b us ni sy in id
da0 306 372 9924.7 12134.0 2 3 0 2 1 78 0 0 3 0 97
da1 0 0 28.3 0.3 19 13 0 18 0 1
da2 0 0 0.1 0.0 2 0 0 2 0 0
```
illumos:
```
# iostat -xnc 1
cpu
us sy dt id
10 6 0 84
extended device statistics
r/s w/s kr/s kw/s wait actv wsvc_t asvc_t %w %b device
0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0 0 fd0
0.5 1.2 31.4 9.1 0.1 0.0 54.5 4.8 0 1 filepool
0.0 8.9 0.7 111.3 0.4 0.1 48.6 8.7 1 6 rpool
0.0 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0 0 c1t0d0
0.0 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0 0 c1t1d0
```
After:
```
# iostat -xC 1
cpu
us ni sy in id
0 0 0 0 99
extended device statistics
device r/s w/s kr/s kw/s ms/r ms/w ms/o ms/t qlen %b
da0 0 0 0.0 0.0 0 0 0 0 0 0
da1 0 0 0.0 0.0 0 0 0 0 0 0
da2 0 0 0.0 0.0 0 0 0 0 0 0
```