yogi:~# free -m
             total       used       free     shared    buffers     cached
Mem:          7986       7932         54          0         12       5676
-/+ buffers/cache:       2243       5743
Swap:         8001       3719       4281

yogi:~# iostat -xm /dev/sda{5..8} 10
---snip-----
avg-cpu:  %user   %nice %system %iowait  %steal   %idle
           7.45    0.00   10.13   70.42    0.00   12.00

Device:         rrqm/s   wrqm/s     r/s     w/s    rMB/s    wMB/s avgrq-sz avgqu-sz   await  svctm  %util
sda5             88.20     0.00   23.80   18.30     0.44     0.07    24.67     1.32    7.57  23.75 100.00
sda6             68.10     0.30   22.70   41.80     0.35     0.16    16.48     0.29    4.44   2.94  18.96
sda7             58.70     0.40   21.50   39.30     0.32     0.16    15.87     0.27    4.45   2.72  16.52
sda8              0.00     0.00    0.00    0.00     0.00     0.00     0.00     0.00    0.00   0.00   0.00

avg-cpu:  %user   %nice %system %iowait  %steal   %idle
           4.45    0.00    6.95   82.90    0.00    5.70

Device:         rrqm/s   wrqm/s     r/s     w/s    rMB/s    wMB/s avgrq-sz avgqu-sz   await  svctm  %util
sda5            117.18     0.00   38.16    3.90     0.61     0.02    30.31     1.78   18.09  23.75  99.90
sda6             64.34     0.20   23.78   12.79     0.34     0.05    22.12     0.33    8.93   5.37  19.62
sda7             53.55     0.20   21.18   12.29     0.29     0.05    20.85     0.22    6.50   4.00  13.39
sda8              0.00     0.00    0.00    0.00     0.00     0.00     0.00     0.00    0.00   0.00   0.00