4.4BSD/usr/share/man/cat1/pstat.0
PSTAT(8) BSD System Manager's Manual PSTAT(8)
NNAAMMEE
ppssttaatt - display system data structures
SSYYNNOOPPSSIISS
ppssttaatt [--TTffnnssttvv] [--MM _c_o_r_e] [--NN _s_y_s_t_e_m]
DDEESSCCRRIIPPTTIIOONN
PPssttaatt displays open file entry, swap space utilization, terminal state,
and vnode data structures. If _c_o_r_e_f_i_l_e is given, the information is
sought there, otherwise in _/_d_e_v_/_k_m_e_m. The required namelist is taken from
_/_v_m_u_n_i_x unless _s_y_s_t_e_m is specified. The --nn option specifies that devices
should be printed out by major/minor number rather than by name.
Options are
--TT Prints the number of used and free slots in the several system
tables and is useful for checking to see how large system tables
have become if the system is under heavy load.
--ff 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)).
--ss 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 _U_s_e_d column indicates the total blocks used
so far; the _A_v_a_i_l_a_b_l_e column indicates how much space is remain-
ing on each partition. The _C_a_p_a_c_i_t_y 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.
--tt 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 putput 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
B busy doing output
A process is awaiting output
X open for exclusive use
S output stopped
H hangup on close
PGRP Process group for which this is controlling terminal.
DISC Line discipline; blank is old tty OTTYDISC or `new tty'
for NTTYDISC or `net' for NETLDISC (see bk(4)).
--vv Print the active vnodes. Each group of vnodes coresponding to a
particular filesystem is preceded by a two line header. The
first line consists of the following:
*** MOUNT _f_s_t_y_p_e _f_r_o_m on _o_n _f_s_f_l_a_g_s
where _f_s_t_y_p_e is one of _u_f_s, _n_f_s, _m_f_s, _o_r _p_c; _f_r_o_m is the filesys-
tem is mounted from; _o_n is the directory the filesystem is mount-
ed on; and _f_s_f_l_a_g_s is a list of optional flags applied to the
mount (see mount(8)). the first part of which are fixed, and the
second part are filesystem type specific. The headers common to
all vnodes are:
ADDR Location of this vnode.
TYP File type.
VFLAG
A list of letters representing vnode flags:
R - VROOT
T - VTEXT
L - VXLOCK
W - VXWANT
E - VEXLOCK
S - VSHLOCK
T - VLWAIT
A - VALIASED
B - VBWAIT
LOC The core location of this table entry.
FLAGS Miscellaneous state variables encoded thus:
L locked
U update time (fs(5)) must be corrected
A access time must be corrected
W wanted by another process (L flag is on)
C changed time must be corrected
S shared lock applied
E exclusive lock applied
Z someone waiting for a lock
M contains modifications
R has a rename in progress
CNT Number of open file table entries for this inode.
DEV Major and minor device number of file system in which
this inode resides.
RDC Reference count of shared locks on the inode.
WRC Reference count of exclusive locks on the inode (this may
be > 1 if, for example, a file descriptor is inherited
across a fork).
INO I-number within the device.
MODE Mode bits, see chmod(2).
NLK Number of links to this inode.
UID User ID of owner.
SIZ/DEV
Number of bytes in an ordinary file, or major and minor
device of special file.
FFIILLEESS
/vmunix namelist
/dev/kmem default source of tables
SSEEEE AALLSSOO
iostat(1), ps(1), systat(1), vmstat(1), stat(2), fs(5),
BBUUGGSS
Swap statistics are reported for all swap partitions compiled into the
kernel, regardless of whether those partitions are being used.
Does not understand NFS swap servers.
HHIISSTTOORRYY
The ppssttaatt command appeared in 4.0BSD.
4th Berkeley Distribution June 6, 1993 4