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| SYSTAT(1) | General Commands Manual | SYSTAT(1) |
systat —
systat |
[-aBbiNn-d
count-s
delay-w
widthview ]
[delay ] |
systat displays various system statistics in
a screen-oriented fashion using the
curses(3) screen
display library.
While systat is running, the screen is
divided into different areas. The top line displays the current number of
users, the three system load average figures over the last 1, 5, and 15 minute
intervals, and the system time. The bottom line of the screen is reserved for
user input and error messages. The information displayed in the rest of the
screen comprises a view, and is the main
interface for displaying different types of system statistics. The
vmstat view is the default.
Certain information may be discarded when the screen size is insufficient for
display. For example, on a machine with 10 drives the
iostat bar graph displays only 3 drives on
a 24 line terminal.
The options are as follows:
-a-Bcpu, where initial calculations are
useless.-b-d
count-i-N-n option.-n-s
delay-w
widthvmstat,
pigs,
ifstat,
iostat,
sensors,
mbufs,
netstat,
swap,
states,
rules,
queues,
pf,
pool,
malloc,
buckets,
nfsclient,
nfsserver, or
cpu. These displays can also be
requested interactively and are described in full detail below.
view may be abbreviated to the minimum
unambiguous prefix; for example, “io” for
“iostat”.-s flag. The default interval is 5
seconds.systat. These are:
:opsystat.qsystat.r,^A
| ⟨Home⟩^B
| ⟨right arrow⟩^E
| ⟨End⟩^F
| ⟨left arrow⟩^G^L^N
| ⟨down arrow⟩^P
| ⟨up arrow⟩^V
| ⟨Page Down⟩Alt-V
| ⟨Page Up⟩^Zsystat.helpquitsystat. (This may be abbreviated
to q.)stopstartbucketsvmstat
-m.cpuifstatup|dn
[:U|D].
‘up’ and ‘dn’ represent whether the interface
is up or down. ‘U’ and ‘D’ represent whether
the interface is connected or not; in the case of
carp(4)
interfaces, whether the interface is in master or backup state,
respectively.
The character B changes the counter view
between bytes and bits. Pressing b
displays statistics as calculated from boot time.
r changes the counters to show their
totals as calculated between display refreshes.
t changes the counters to show the
average per second over the display refresh interval; this is the
default.iostatmallocvmstat
-m. Available orderings are:
name,
inuse,
memuse, and
requests.mbufsnetstatall-a flag to
netstat(1)).namesnumbersresettcp
|
udp
|
othernfsclientnfsstat
-c.nfsservernfsstat
-s.pfpfctl
-s
info option.pigspoolvmstat
-m. Available orderings are:
name,
requests,
size, and
number of pages.
By default only the statistics of active pools are displayed but pressing
A changes the view to show all of
them.queuespfctl
-s
queue.rulespfctl
-s
rules.sensorsstatespfctl
-s
states. Available orderings are:
none,
bytes,
expiry,
packets,
age, source
address, source port,
destination address,
destination port,
rate, and
peak columns.swapvmstat|’), system
(shown as ‘=’), user (shown as
‘>’), nice (shown as
‘-’), and idle time (shown as
‘ ’).
To the right of the Proc display are statistics about Context switches
(“Csw”), Traps (“Trp”), Syscalls
(“Sys”), Interrupts (“Int”), Soft interrupts
(“Sof”), and Faults (“Flt”) which have
occurred during the last refresh interval.
Below the CPU usage graph are statistics on name translations. It lists the
number of names translated in the previous interval, the number and
percentage of the translations that were handled by the system wide name
translation cache, and the number and percentage of the translations that
were handled by the per process name translation cache.
At the bottom left is the disk usage display. It reports the number of
seeks, transfers, number of kilobyte blocks transferred per second
averaged over the refresh period of the display, and the time spent in
disk accesses.
Under the date in the upper right hand quadrant are statistics on paging and
swapping activity. The first two columns report the average number of
pages brought in and out per second over the last refresh interval due to
page faults and the paging daemon. The third and fourth columns report the
average number of pages brought in and out per second over the last
refresh interval due to swap requests initiated by the scheduler. The
first row of the display shows the average number of disk transfers per
second over the last refresh interval. The second row of the display shows
the average number of pages transferred per second over the last refresh
interval.
Running down the right hand side of the display is a breakdown of the
interrupts being handled by the system. At the top of the list is the
total interrupts per second over the time interval. The rest of the column
breaks down the total on a device by device basis. Only devices that have
interrupted at least once since boot time are shown.
Below the Interrupts display are the average number of input and output
packets per second for all interfaces over the last refresh interval.
Below the SWAPPING display and slightly to the left of the Interrupts
display is a list of virtual memory statistics. The abbreviations are:
systat program first appeared in
4.3BSD.
vmstat display looks out of place because
it is (it was added in as a separate display rather than created as a new
program).| March 12, 2015 | OpenBSD-6.0 |