can we afford an extra column in iostat?

[Brian Somers]

On Tue, 14 Jul 2009 07:23:12 +0300, Giorgos Keramidas <keramida at freebsd.org> wrote:
> While converting my laptop's main disk to zfs, I noticed iostat output
> like this (bits copied from here and there):
> 
> | keramida at kobe:/home/keramida$ iostat -w3 ad0 da0
> |       tty             ad0              da0             cpu
> |  tin tout  KB/t tps  MB/s   KB/t tps  MB/s  us ni sy in id
> |    5 2119 36.29  56  2.00  54.95   7  0.35   3  0  8  0 89
> |    0 9478 10.90 290  3.09  57.22  12  0.67  42  0 43  0 15
> |    012595  1.72 213  0.36  21.36  80  1.66  48  0 48  0  4
> |    050042  4.56 715  3.19  11.44 164  1.83  29  0 50  1 20
> |  11529568  7.34 443  3.17  16.97 165  2.74  31  0 53  0 16
>[.....]
> | $ ./iostat -w2
> |       tty             ad0              md0              da0             cpu
> |  tin  tout  KB/t tps  MB/s   KB/t tps  MB/s   KB/t tps  MB/s  us ni sy in id
> |    7  2570 32.92  62  1.98   6.46   0  0.00  43.44  10  0.41   4  0  9  0 87
> |    0 36506  0.99 507  0.49   0.00   0  0.00  20.13 155  3.04  34  0 56  1  9
> |    0 16695  0.83 226  0.18   0.00   0  0.00  26.16  97  2.48  35  0 56  0  9
> |    0 24158 10.63 428  4.45   0.00   0  0.00  14.44 137  1.93  32  0 51  0 17
> | ^C
> 
> The patch that changes this is quite small:

This should be fixed.  Ironically, the only people that usually
have problems with fixes like this are people that have seen
the fields merge and have adjusted some script to understand
column widths!

-- 
Brian Somers                                       <brian at Awfulhak.org>
Don't _EVER_ lose your sense of humour !            <brian at FreeBSD.org>