IOSTAT(1) IOSTAT(1)
NAME
iostat, load, dkstat - report I/O and CPU statistics
SYNOPSIS
iostat [ interval [ count ] ]
load [ interval [ count [ sysfile [ corefile ] ] ] ]
dkstat [ interval [ count ] ]
DESCRIPTION
Iostat periodically reports the number of characters read
and written to terminals, and, for each disk, the number of
seeks and transfers per second, and average milliseconds per
seek. It also reports the percentage of time the system has
spent in user mode, in user mode running low priority
(niced) processes, in system mode, and idling. The first
report is for all time since a reboot and each subsequent
report is for the last interval only.
Load periodically reports the number of processes ready to
run averaged over the preceding 1, 5, and 15 minutes.
Dkstat periodically reports the number of packets received
and sent over the Datakit network, together with error
reports if any occurred. The first report is for all time
since a reboot and each subsequent report is for the last
interval only.
The optional interval argument causes a report once each
interval seconds.
The optional count argument restricts the number of reports.
The optional arguments sysfile and corefile cause the named
files to be consulted instead of the defaults, `/unix' and
`/dev/kmem'.
FILES
/dev/kmem
/unix
SEE ALSO
sysmon(9.1), vmstat(8)