PSTAT(8) COMMAND REFERENCE PSTAT(8)
NAME
pstat - print system facts
SYNOPSIS
/etc/pstat -fisTtx -p[a] [ -u ubase ] [ system ]
[ corefile ]
DESCRIPTION
Pstat interprets the contents of certain system tables. If
corefile is given, the tables are sought there, otherwise in
/dev/kmem. Kernel symbols are taken from the cvt table (see
cvt(4)) unless system is specified. If system is given,
kernel symbols are obtained from the namelist in system.
OPTIONS
-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
CNT Number of processes that know this open file.
INO The location of the inode table entry for this
file.
OFFS/SOCK
The file offset (see lseek(2)), or the core
address of the associated socket structure.
-i Print the inode table with the these headings:
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
Printed 4/6/89 1
PSTAT(8) COMMAND REFERENCE PSTAT(8)
M file system is mounted here
W wanted by another process (L flag is on)
T contains a text file
C changed time must be corrected
S shared lock applied
E exclusive lock applied
Z someone waiting for an exclusive lock
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.
-p[a]
Print process table for active processes with the
following headings. If a is specified all processes,
rather than just active ones, are described.
LOC The core location of this table entry.
S Run state encoded thus:
0 no process
1 waiting for some event
3 runnable
Printed 4/6/89 2
PSTAT(8) COMMAND REFERENCE PSTAT(8)
4 being created
5 being terminated
6 stopped under trace
F Miscellaneous state variables, or-ed together
(hexadecimal):
000001 loaded
000002 the scheduler process
000004 locked for swap out
000008 swapped out
000010 traced
000020 used in tracing
000080 in page-wait
000100 prevented from swapping during fork(2)
000200 gathering pages for raw i/o
000400 exiting
001000 process resulted from a vfork(2) which
is not yet complete
002000 another flag for vfork(2)
004000 process has no virtual memory, as it
is a parent in the context of vfork(2)
008000 process is demand paging data pages
from its text inode.
010000 process has advised of anomalous
behavior with vadvise.
020000 process has advised of sequential
behavior with vadvise.
040000 process is in a sleep which will
timeout.
080000 a parent of this process has exited
and this process is now considered
detached.
Printed 4/6/89 3
PSTAT(8) COMMAND REFERENCE PSTAT(8)
100000 process used 4.1BSD compatibility mode
signal primitives, no system calls
will restart.
200000 process is owed a profiling tick.
POIP number of pages currently being pushed out from
this process.
PRI Scheduling priority, see setpriority(2).
SIGNAL
Signals received (signals 1-32 coded in bits 0-
31),
UID Real user ID.
SLP Amount of time process has been blocked.
TIM Time resident in seconds; times over 127 coded
as 127.
CPU Weighted integral of CPU time, for scheduler.
NI Nice level, see setpriority(2).
PGRP Process number of root of process group (the
opener of the controlling terminal).
PID The process ID number.
PPID The process ID of parent process.
ADDR If in core, the page frame number of the first
page of the `u-area' of the process. If swapped
out, the position in the swap area measured in
multiples of 512 bytes.
RSS Resident set size - the number of physical page
frames allocated to this process.
SRSS RSS at last swap (0 if never swapped).
SIZE Virtual size of process image (data+stack) in
multiples of 512 bytes.
WCHAN
Wait channel number of a waiting process.
LINK Link pointer in list of runnable processes.
TEXTP
Printed 4/6/89 4
PSTAT(8) COMMAND REFERENCE PSTAT(8)
If text is pure, pointer to location of text
table entry.
CLKT Countdown for real interval timer, setitimer(2)
measured in clock ticks (10 milliseconds).
-s This option is not supported.
-T Print the number of used and free slots in the several
system tables. This option is useful for checking to see
how full system tables have become if the system is under
heavy load.
-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.
STAT Miscellaneous state variables encoded thus:
W waiting for open to complete
O open
S has special (output) start routine
C carrier is on
B busy doing output
A process is awaiting output
X open for exclusive use
H hangup on close
PGRP Process group for which this is controlling
terminal.
Printed 4/6/89 5
PSTAT(8) COMMAND REFERENCE PSTAT(8)
DISC Line discipline; blank is old tty OTTYDISC or
``ntty'' for NTTYDISC or ``net'' for NETLDISC
(see bk(4)).
-uubase
Print information about a user process; ubase is its
address as given by ps(1). The process must be in main
memory, or the file used can be a core image and the
address 0.
-x This option is not supported.
FILES
/dev/cvt default source for kernel symbols
/dev/kmem default source of tables
RETURN VALUE
[NO_ERRS] Command completed without error.
[USAGE] Incorrect command line syntax. Execution
terminated.
[NP_ERR] An error occurred that was not a system
error. Execution terminated.
CAVEATS
It would be very useful if the system recorded "maximum
occupancy" on the tables reported by -T; even more useful if
these tables were dynamically allocated.
Things can change while pstat is running; the picture it
gives is only a close approximation of reality. For
instance, pstat may produce false error messages if it
cannot find a particular file or if a data structure it is
looking at changes underneath it.
SEE ALSO
ps(1), stat(2), cvt(4), and fs(5).
Printed 4/6/89 6
%%index%%
na:264,78;
sy:342,394;
de:736,567;
op:1303,1159;2798,1591;4725,1750;6811,1721;8868,1557;10761,487;
fi:11248,179;
rv:11427,382;
ca:11809,666;
se:12475,162;
%%index%%000000000188