bin/91034: minor fix to iostat so that columns line up with 128KB xfers

[Giorgos Keramidas]

The following reply was made to PR bin/91034; it has been noted by GNATS.

From: Giorgos Keramidas <keramida at freebsd.org>
To: Robert Cousins <rec at RCousins.com>
Cc: bug-followup at freebsd.org
Subject: Re: bin/91034: minor fix to iostat so that columns line up with 128KB xfers
Date: Tue, 3 Jan 2006 10:28:23 +0200

 On 2005-12-28 21:16, Robert Cousins <rec at RCousins.com> wrote:
 > Iostat's output can be kind of ugly under USF2 with 128KB
 > transfers. Here is an example:
 >
 >       tty             ad0              ad1             cpu
 >  tin tout  KB/t tps  MB/s   KB/t tps  MB/s  us ni sy in id
 >    0   60  0.00   0  0.00   0.00   0  0.00  50  0  0  0 50
 >    0  180  0.00   0  0.00  128.00   8  1.00  48  0  0  0 51
 >    0   61  0.00   0  0.00   0.00   0  0.00  50  0  0  0 50
 >    0   60  0.00   0  0.00   0.00   0  0.00  49  0  0  0 51
 >
 > The problem comes from the KB/t column which goes one character too wide.
 >
 > The patch I'm submitting notices when this value is >= 100 and
 > drops from 2 decimals to 1 in this case. The result is an output
 > like this:
 >
 >       tty             ad0              ad1             cpu
 >  tin tout  KB/t tps  MB/s   KB/t tps  MB/s  us ni sy in id
 >    0   60  0.00   0  0.00   0.00   0  0.00  50  0  0  0 50
 >    0  180  0.00   0  0.00  128.0   8  1.00  48  0  0  0 51
 >    0   61  0.00   0  0.00   0.00   0  0.00  50  0  0  0 50
 >    0   60  0.00   0  0.00   0.00   0  0.00  49  0  0  0 51
 
 The misaligned dots seem a bit ugly.  Is it ok to use %6.2Lf as
 the format specifier, widening the KB columns a bit to fit the
 new length of the text?