PSTAT(8) BSD System Manager's Manual PSTAT(8)NAME
pstat, swapinfo — display system data structures
SYNOPSISpstat [-Tfknst] [-M core] [-N system]
swapinfo [-k] [-M core] [-N system]
DESCRIPTION
Pstat displays open file entry, swap space utilization, terminal state,
and vnode data structures.
If invoked as swapinfo the -s option is implied, and only the -k option
is legal.
The following options are available:
-n Print devices out by major/minor instead of name.
-k Print sizes in kilobytes, regardless of the setting of the
BLOCKSIZE environment variable.
-T Print the number of used and free slots in several system tables.
This is useful for checking to see how large system tables have
become if the system is under heavy load.
-f Print the open file table with these headings:
LOC The core location of this table entry.
TYPE The type of object the file table entry points to.
FLG Miscellaneous state variables encoded thus:
R open for reading
W open for writing
A open for appending
S shared lock present
X exclusive lock present
I signal pgrp when data ready
CNT Number of processes that know this open file.
MSG Number of messages outstanding for this file.
DATA The location of the vnode table entry or socket structure
for this file.
OFFSET The file offset (see lseek(2)).
-s Print information about swap space usage on all the swap areas
compiled into the kernel. The first column is the device name of
the partition. The next column is the total space available in
the partition. The Used column indicates the total blocks used
so far; the Available column indicates how much space is remain‐
ing on each partition. The Capacity reports the percentage of
space used.
If more than one partition is configured into the system, totals
for all of the statistics will be reported in the final line of
the report.
If you supply the option again, as in -ss, the system will dis‐
play a breakdown of the swap bitmap/radix-tree.
-t Print table for terminals with these headings:
RAW Number of characters in raw input queue.
CAN Number of characters in canonicalized input queue.
OUT Number of characters in output queue.
MODE See tty(4).
ADDR Physical device address.
DEL Number of delimiters (newlines) in canonicalized input
queue.
COL Calculated column position of terminal.
STATE Miscellaneous state variables encoded thus:
T delay timeout in progress
W waiting for open to complete
O open
F outq has been flushed during DMA
C carrier is on
c connection open
B busy doing output
A process is waiting for space in output queue
a process is waiting for output to complete
X open for exclusive use
S output stopped (ixon flow control)
m output stopped (carrier flow control)
o output stopped (CTS flow control)
d output stopped (DSR flow control)
K input stopped
Y send SIGIO for input events
D state for lowercase ‘\’ work
E within a ‘\.../’ for PRTRUB
L next character is literal
P retyping suspended input (PENDIN)
N counting tab width, ignore FLUSHO
l block mode input routine in use
s i/o being snooped
Z connection lost
SESS Kernel address of the session structure.
PGID Process group for which this is controlling terminal.
DISC Line discipline; ‘term’ for TTYDISC or ‘ntty’ for NTTY‐
DISC or ‘tab’ for TABLDISC or ‘slip’ for SLIPDISC or
‘ppp’ for PPPDISC.
-M Extract values associated with the name list from the specified
core instead of the default /dev/kmem.
-N Extract the name list from the specified system instead of the
default /boot/kernel.
FILES
/boot/kernel
namelist
/dev/mem default source of tables
SEE ALSOps(1), systat(1), stat(2), fs(5), iostat(8), vmstat(8)
K. Thompson, UNIX Implementation.
HISTORY
The pstat command appeared in 4.0BSD.
BUGS
Does not understand NFS swap servers.
BSD September 2, 2008 BSD
