vmstat -S m 1 10
procs -----------memory---------- ---swap-- -----io---- --system-- -----cpu-----
 r  b   swpd   free   buff  cache   si   so    bi    bo   in   cs us sy id wa st
19  0   7782   1010    244   7495    0    0    38    84    0    0 20  7 65  8  0
18  2   7782    999    244   7496    0    0    16  1096 7446 3470 70 12 10  8  0
20  0   7782    995    244   7496    0    0   300   416 9677 5978 57 16 20  8  0

Procs
r: The number of processes waiting for run time.
b: The number of processes in uninterruptible sleep.

Memory
swpd: the amount of virtual memory used.
free: the amount of idle memory.
buff: the amount of memory used as buffers.
cache: the amount of memory used as cache.
inact: the amount of inactive memory. (-a option)
active: the amount of active memory. (-a option)

Swap
si: Amount of memory swapped in from disk (/s).
so: Amount of memory swapped to disk (/s).

IO
bi: Blocks received from a block device (blocks/s).
bo: Blocks sent to a block device (blocks/s).

System
in: The number of interrupts per second, including the clock.
cs: The number of context switches per second.

CPU
These are percentages of total CPU time.
us: Time spent running non-kernel code. (user time, including nice time)
sy: Time spent running kernel code. (system time)
id: Time spent idle. Prior to Linux 2.5.41, this includes IO-wait time.
wa: Time spent waiting for IO. Prior to Linux 2.5.41, included in idle.
st: Time stolen from a virtual machine. Prior to Linux 2.6.11, unknown.

Sometimes some commands can give you not aligned output like this:

procs ———–memory———- —swap– —–io—- –system– —–cpu—–
r b swpd free buff cache si so bi bo in cs us sy id wa st
12 0 7406848 361600 215560 7777776 0 0 38 83 0 0 20 7 65 8 0
25 0 7406848 366428 215560 7778240 0 0 24 28 9946 6872 52 19 28 1 0
24 0 7406848 371024 215568 7778736 0 0 36 396 10088 5820 65 19 15 0 0
37 0 7406844 374752 215568 7779248 0 0 0 88 10317 6669 59 15 25 0 0
29 2 7406844 377488 215568 7779804 0 0 152 712 10984 6304 59 18 21 1 0

what to do?
Percona can suggest some perl based tools:

wget percona.com/get/pt-align && chmod +x  pt-align &&  \cp ./pt-align /usr/bin/al

Now:

vmstat 1 5 | al