$  vmstat n

-n

Interval in seconds between reports. 

procs

Reports the following states: 

r

The number of kernel threads in the dispatch queue 

b

Blocked kernel threads waiting for resources 

w

Swapped out LWPs waiting for processing resources to finish  

memory

Reports on usage of real and virtual memory: 

swap

Available swap space 

free

Size of the free list 

page

Reports on page faults and paging activity, in units per second: 

re

Pages reclaimed 

mf

Minor and major faults 

pi

Kbytes paged in 

po

Kbytes paged out 

fr

Kbytes freed 

de

Anticipated memory needed by recently swapped-in processes 

sr

Pages scanned by page daemon (not currently in use). If sr does not equal zero, the page daemon has been running.

disk

Reports the number of disk operations per second, showing data on up to four disks 

faults

Reports the trap/interrupt rates (per second): 

in

Interrupts per second 

sy

System calls per second 

cs

CPU context switch rate 

cpu

Reports on the use of CPU time: 

us

User time 

sy

System time 

id

Idle time

$ vmstat 5
 procs    memory            page             disk      faults     cpu
r b w  swap free re  mf  pi  po  fr de sr f0 s3 -- --  in  sy  cs us sy  id
0 0 8 28312  668  0   9   2   0   1  0  0  0  1  0  0  10  61  82  1  2  97
0 0 3 31940  248  0  10  20   0  26  0 27  0  4  0  0  53 189 191  6  6  88
0 0 3 32080  288  3  19  49   6  26  0 15  0  9  0  0  75 415 277  6 15  79
0 0 3 32080  256  0  26  20   6  21  0 12  1  6  0  0 163 110 138  1  3  96
0 1 3 32060  256  3  45  52  28  61  0 27  5 12  0  0 195 191 223  7 11  82
0 0 3 32056  260  0   1   0   0   0  0  0  0  0  0  0   4  52  84  0  1  99