PSTAT(8) PSTAT(8)
NAME
pstat - print system facts
SYNOPSIS
/etc/pstat [ -acfipstuxT ] [ suboptions ] [ file ] [ namel-
ist ]
DESCRIPTION
Pstat interprets the contents of certain system tables. If
file is given, the tables are sought there, otherwise in
/dev/kmem. The required namelist is taken from namelist,
default /unix. Options are
-a Under -p, describe all process slots rather than just
active ones.
-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 (filsys(5)) must be corrected
A access time must be corrected
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
CNT Number of open file table entries for this inode.
DEV Major and minor device number of file system in which
this inode resides.
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.
-x Print the text table with these headings:
LOC The core location of this table entry.
FLAGS Miscellaneous state variables encoded thus:
T Traced through proc(4)
W text not yet written on swap device
L loading in progress
K locked
w wanted (L flag is on)
P resulted from demand-page-from-inode exec format
(see exec(2))
PSTAT(8) PSTAT(8)
DADDR Disk address in swap, measured in multiples of 512
bytes.
CADDR Head of a linked list of loaded processes using this
text segment.
SIZE Size of text segment, measured in multiples of 512
bytes.
IPTR Core location of corresponding inode.
CNT Number of processes using this text segment.
CCNT Number of processes in core using this text segment.
-p Print process table for active processes with these
headings:
LOC The core location of this table entry.
S Run state encoded thus:
0 no process
1 waiting for some event
3 runnable
4 being created
5 being terminated
6 stopped under trace
F Miscellaneous state variables, or-ed together (hex-
adecimal):
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
008000 process is demand paging data pages from its
text inode.
030000 process has warned of anomalous paging behav-
ior with vlimit(2).
040000 process is in a sleep which will timeout.
080000 a parent of this process has exited and this
process is now considered detached.
POIP number of pages currently being pushed out from this
process.
PRI Scheduling priority, see nice(2).
SIGNAL
Signals received (signals 1-32 coded in bits 0-31),
UID Real user ID.
SLP Amount of time process has been blocked.
PSTAT(8) PSTAT(8)
TIM Time resident in seconds; times over 127 coded as 127.
CPU Weighted integral of CPU time, for scheduler.
NI Nice level, see nice(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 multi-
ples of 512 bytes.
WCHAN Wait channel number of a waiting process.
LINK Link pointer in list of runnable processes.
TEXTP If text is pure, pointer to location of text table
entry.
CLKT Countdown for alarm(2) measured in seconds.
-u print information about a user process; the next argu-
ment is its address as given by oops(8). The process
must be in main memory, or the file used can be a core
image and the address 0.
-f Print the open file table with these headings:
LOC The core location of this table entry.
FLG Miscellaneous state variables encoded thus:
R open for reading
W open for writing
P pipe
CNT Number of processes that know this open file.
INO The location of the inode table entry for this file.
OFFS The file offset, see lseek(2).
-s print information about swap space usage: the number of
(1k byte) pages used and free is given as well as the number
of used pages which belong to text images.
-T prints the number of used and free slots in the several
system tables and is useful for checking to see how full
system tables have become if the system is under heavy load.
FILES
/unix namelist
/dev/kmem default source of tables
SEE ALSO
oops(8), stat(2), filsys(5)
PSTAT(8) PSTAT(8)
K. Thompson, UNIX Implementation
BUGS
This program is never up to date.