Here is what I get on my system (PII 400 w/128M RAM, one user connected and no
batch activity) with the following command:

	iostat -tp -o data 2

and DISK ACCOUNTING enabled (patch applied on a 2.2.5-15 kernel running RH6.0).
Lines beginning with '> ' represent the output of the iostat command retrieved
from the 'data' file.

* /dev/hda is my IDE UDMA disk drive [hdisk0]
* /dev/hdb (/dev/cdrom) is my CDROM (40x max), NOT mounted and accessed for the
  FIRST time [hdisk1],
* /dev/hdc is my ZIP 100 drive, NOT mounted and accessed for the FIRST time
  [hdisk2],
* /dev/hda1 and /dev/hda5 are two DOS partitions, NOT mounted and accessed for
  the FIRST time.


Script started on Sun Jul 25 11:39:25 1999
> Time: 11:39:49  
> avg-cpu:  %user   %nice    %sys   %idle
>            1.89    0.00    0.71   97.40
> Disks:      tps    Kb_read/s    Kb_wrtn/s    Kb_read    Kb_wrtn
> hdisk0     2.64        12.57         1.96      92278      14454
> hdisk1     0.00         0.00         0.00          0          0
> hdisk2     0.04         0.05         0.00        400          6
> hdisk3     0.00         0.00         0.00          0          0
> Total:     2.69        12.62         1.97      92678      14460

root@brooks:~# dd if=/dev/hda5 of=/dev/null bs=1k count=4096
4096+0 records in
4096+0 records out
> Time: 11:40:31  
> avg-cpu:  %user   %nice    %sys   %idle
>            0.50    0.00    5.50   94.00
> Disks:      tps    Kb_read/s    Kb_wrtn/s    Kb_read    Kb_wrtn
> hdisk0   415.50      2048.00         6.00       4096         12
> hdisk1     0.00         0.00         0.00          0          0
> hdisk2     0.00         0.00         0.00          0          0
> hdisk3     0.00         0.00         0.00          0          0
> Total:   415.50      2048.00         6.00       4096         12

root@brooks:~# dd if=/dev/hda1 of=/dev/null bs=4k count=4096
4096+0 records in
4096+0 records out
> Time: 11:41:03  
> avg-cpu:  %user   %nice    %sys   %idle
>            1.50    0.00   16.00   82.50
> Disks:      tps    Kb_read/s    Kb_wrtn/s    Kb_read    Kb_wrtn
> hdisk0  1001.00      7982.50         5.00      15965         10
> hdisk1     0.00         0.00         0.00          0          0
> hdisk2     0.00         0.00         0.00          0          0
> hdisk3     0.00         0.00         0.00          0          0
> Total:  1001.00      7982.50         5.00      15965         10
>
> Time: 11:41:05  
> avg-cpu:  %user   %nice    %sys   %idle
>            0.50    0.00    0.50   99.00
> Disks:      tps    Kb_read/s    Kb_wrtn/s    Kb_read    Kb_wrtn
> hdisk0    28.00       213.50         0.00        427          0
> hdisk1     0.00         0.00         0.00          0          0
> hdisk2     0.00         0.00         0.00          0          0
> hdisk3     0.00         0.00         0.00          0          0
> Total:    28.00       213.50         0.00        427          0

root@brooks:~# dd if=/dev/cdrom of=/dev/null bs=1k count=2048
2048+0 records in
2048+0 records out
> Time: 11:41:49  
> avg-cpu:  %user   %nice    %sys   %idle
>            0.00    0.00    0.50   99.50
> Disks:      tps    Kb_read/s    Kb_wrtn/s    Kb_read    Kb_wrtn
> hdisk0     3.50        15.00         0.00         30          0
> hdisk1     0.50         0.50         0.00          1          0
> hdisk2     0.00         0.00         0.00          0          0
> hdisk3     0.00         0.00         0.00          0          0
> Total:     4.00        15.50         0.00         31          0
>
> Time: 11:41:51  
> avg-cpu:  %user   %nice    %sys   %idle
>            0.00    0.00    1.00   99.00
> Disks:      tps    Kb_read/s    Kb_wrtn/s    Kb_read    Kb_wrtn
> hdisk0     1.50         0.50         1.00          1          2
> hdisk1   151.00       453.00         0.00        906          0
> hdisk2     0.00         0.00         0.00          0          0
> hdisk3     0.00         0.00         0.00          0          0
> Total:   152.50       453.50         1.00        907          2
>
> Time: 11:41:53  
> avg-cpu:  %user   %nice    %sys   %idle
>            0.50    0.00    0.50   99.00
> Disks:      tps    Kb_read/s    Kb_wrtn/s    Kb_read    Kb_wrtn
> hdisk0     0.00         0.00         0.00          0          0
> hdisk1   190.50       572.00         0.00       1144          0
> hdisk2     0.00         0.00         0.00          0          0
> hdisk3     0.00         0.00         0.00          0          0
> Total:   190.50       572.00         0.00       1144          0

root@brooks:~# dd if=/dev/hdc of=/dev/null bs=1k count=4096
4096+0 records in
4096+0 records out
> Time: 11:42:21  
> avg-cpu:  %user   %nice    %sys   %idle
>            1.00    0.00    0.50   98.50
> Disks:      tps    Kb_read/s    Kb_wrtn/s    Kb_read    Kb_wrtn
> hdisk0     5.00         2.00         3.00          4          6
> hdisk1     0.00         0.00         0.00          0          0
> hdisk2    14.00        52.50         0.00        105          0
> hdisk3     0.00         0.00         0.00          0          0
> Total:    19.00        54.50         3.00        109          6
> 
> Time: 11:42:23  
> avg-cpu:  %user   %nice    %sys   %idle
>            0.00    0.00    0.00  100.00
> Disks:      tps    Kb_read/s    Kb_wrtn/s    Kb_read    Kb_wrtn
> hdisk0     0.00         0.00         0.00          0          0
> hdisk1     0.00         0.00         0.00          0          0
> hdisk2    47.50       190.00         0.00        380          0
> hdisk3     0.00         0.00         0.00          0          0
> Total:    47.50       190.00         0.00        380          0
> 
> Time: 11:42:25  
> avg-cpu:  %user   %nice    %sys   %idle
>            0.00    0.00    1.50   98.50
> Disks:      tps    Kb_read/s    Kb_wrtn/s    Kb_read    Kb_wrtn
> hdisk0     0.00         0.00         0.00          0          0
> hdisk1     0.00         0.00         0.00          0          0
> hdisk2    48.00       190.00         0.00        380          0
> hdisk3     0.00         0.00         0.00          0          0
> Total:    48.00       190.00         0.00        380          0
> 
> Time: 11:42:27  
> avg-cpu:  %user   %nice    %sys   %idle
>            0.00    0.00    0.50   99.50
> Disks:      tps    Kb_read/s    Kb_wrtn/s    Kb_read    Kb_wrtn
> hdisk0     0.00         0.00         0.00          0          0
> hdisk1     0.00         0.00         0.00          0          0
> hdisk2    47.50       190.50         0.00        381          0
> hdisk3     0.00         0.00         0.00          0          0
> Total:    47.50       190.50         0.00        381          0
> 
> Time: 11:42:29  
> avg-cpu:  %user   %nice    %sys   %idle
>            0.00    0.00    0.50   99.50
> Disks:      tps    Kb_read/s    Kb_wrtn/s    Kb_read    Kb_wrtn
> hdisk0     0.00         0.00         0.00          0          0
> hdisk1     0.00         0.00         0.00          0          0
> hdisk2    47.00       189.00         0.00        378          0
> hdisk3     0.00         0.00         0.00          0          0
> Total:    47.00       189.00         0.00        378          0
> 
> Time: 11:42:31  
> avg-cpu:  %user   %nice    %sys   %idle
>            0.00    0.00    0.50   99.50
> Disks:      tps    Kb_read/s    Kb_wrtn/s    Kb_read    Kb_wrtn
> hdisk0     3.00         0.00         3.50          0          7
> hdisk1     0.00         0.00         0.00          0          0
> hdisk2    48.50       193.00         0.00        386          0
> hdisk3     0.00         0.00         0.00          0          0
> Total:    51.50       193.00         3.50        386          7
> 
> Time: 11:42:33  
> avg-cpu:  %user   %nice    %sys   %idle
>            0.00    0.00    0.50   99.50
> Disks:      tps    Kb_read/s    Kb_wrtn/s    Kb_read    Kb_wrtn
> hdisk0     0.00         0.00         0.00          0          0
> hdisk1     0.00         0.00         0.00          0          0
> hdisk2    47.50       190.00         0.00        380          0
> hdisk3     0.00         0.00         0.00          0          0
> Total:    47.50       190.00         0.00        380          0
> 
> Time: 11:42:35  
> avg-cpu:  %user   %nice    %sys   %idle
>            0.00    0.00    0.50   99.50
> Disks:      tps    Kb_read/s    Kb_wrtn/s    Kb_read    Kb_wrtn
> hdisk0     0.00         0.00         0.00          0          0
> hdisk1     0.00         0.00         0.00          0          0
> hdisk2    48.00       190.50         0.00        381          0
> hdisk3     0.00         0.00         0.00          0          0
> Total:    48.00       190.50         0.00        381          0
> 
> Time: 11:42:37  
> avg-cpu:  %user   %nice    %sys   %idle
>            0.00    0.00    0.50   99.50
> Disks:      tps    Kb_read/s    Kb_wrtn/s    Kb_read    Kb_wrtn
> hdisk0     2.50         0.00         2.50          0          5
> hdisk1     0.00         0.00         0.00          0          0
> hdisk2    47.50       190.50         0.00        381          0
> hdisk3     0.00         0.00         0.00          0          0
> Total:    50.00       190.50         2.50        381          5
> 
> Time: 11:42:39  
> avg-cpu:  %user   %nice    %sys   %idle
>            0.50    0.00    0.50   99.00
> Disks:      tps    Kb_read/s    Kb_wrtn/s    Kb_read    Kb_wrtn
> hdisk0     0.00         0.00         0.00          0          0
> hdisk1     0.00         0.00         0.00          0          0
> hdisk2    46.50       185.50         0.00        371          0
> hdisk3     0.00         0.00         0.00          0          0
> Total:    46.50       185.50         0.00        371          0
> 
> Time: 11:42:41  
> avg-cpu:  %user   %nice    %sys   %idle
>           10.00    0.00    1.50   88.50
> Disks:      tps    Kb_read/s    Kb_wrtn/s    Kb_read    Kb_wrtn
> hdisk0     2.50         9.00         1.00         18          2
> hdisk1     0.00         0.00         0.00          0          0
> hdisk2    42.00       165.50         0.00        331          0
> hdisk3     0.00         0.00         0.00          0          0
> Total:    44.50       174.50         1.00        349          2
> 
> Time: 11:42:43  
> avg-cpu:  %user   %nice    %sys   %idle
>            1.50    0.00    1.00   97.50
> Disks:      tps    Kb_read/s    Kb_wrtn/s    Kb_read    Kb_wrtn
> hdisk0     0.00         0.00         0.00          0          0
> hdisk1     0.00         0.00         0.00          0          0
> hdisk2    31.00       123.50         0.00        247          0
> hdisk3     0.00         0.00         0.00          0          0
> Total:    31.00       123.50         0.00        247          0
Script done on Sun Jul 25 11:43:20 1999

