Mon 21 Jan 2008
procs
Information about the numbers of processes in various states.
r in run queue
b blocked for resources (i/o, paging, etc.)
w runnable or short sleeper (< 20 secs) but swapped
memory
Information about the usage of virtual and real memory. Virtual
pages (reported in units of 1024 bytes) are considered active if they belong to processes which are running or have run in the last 20 seconds.
avm active virtual pages
fre size of the free list
page
Information about page faults and paging activity. These are averaged each five seconds, and given in units per second.
flt total number of page faults
re page reclaims (simulating reference bits)
pi pages paged in
po pages paged out
fr pages freed per second
sr pages scanned by clock algorithm, per-second
disks
Disk operations per second (this field is system dependent). Typically paging will be split across the available drives. The header of the field is the first two characters of the disk name and the unit number. If more than two disk drives are configured in the system, vmstat displays only the first two drives, unless the user specifies the -n argument to increase the number of drives displayed.
faults
Trap/interrupt rate averages per second over last 5 seconds.
in device interrupts per interval (including clock interrupts)
sy system calls per interval
cs cpu context switch rate (switches/interval)
cpu
Breakdown of percentage usage of CPU time.
us user time for normal and low priority processes
sy system time
id cpu idle
