2.11BSD#431 - /usr/man/cat8/pstat.0

PSTAT(8)	    UNIX Programmer's Manual		 PSTAT(8)


NAME
     pstat - print system facts

SYNOPSIS
     /usr/sbin/pstat -aixptufT [ suboptions ] [ system ] [ core-
     file ]

DESCRIPTION
     Pstat interprets the contents of certain system tables.  If
     corefile is given, the tables are sought there, otherwise in
     /dev/kmem. The required namelist is taken from /vmunix
     unless system is specified.  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 (fs(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
	   S	shared lock applied
	   E	exclusive lock applied
	   Z	someone waiting for a 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.

     -x    Print the text table with these headings:

     LOC   The core location of this table entry.
     FLAGS Miscellaneous state variables encoded thus:
	   T	ptrace(2) in effect
	   W	text not yet written on swap device
	   L	loading in progress


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PSTAT(8)	    UNIX Programmer's Manual		 PSTAT(8)


	   K	locked
	   w	wanted (L flag is on)
	   P	resulted from demand-page-from-inode exec format
		(see execve(2))

     DADDR Disk address in swap, measured in multiples of 512
	   bytes.

     CADDR Head of a linked list of loaded processes using this
	   text segment.

     RSS   Size of resident text, measured in multiples of 512
	   bytes.

     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.

     FORW  Forward link in free list.

     BACK  Backward link in free list.

     -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 (by signal or  under trace)
     F	   Miscellaneous state variables, or'ed together (hexade-
	   cimal):
	   0001     loaded
	   0002     system process (swapper)
	   0004     locked for swap out
	   0008     swap save area
	   0010     traced
	   0020     used in tracing
	   0040     user settable lock in core
	   0100     process resulted from vfork(2)
	   0200     parent in vfork, waiting for child
	   0400     parent has released child in vfork
	   1000     detached inherited by init
	   2000     no SIGCHLD signal to parent


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PSTAT(8)	    UNIX Programmer's Manual		 PSTAT(8)


	   4000     selecting; wakeup/waiting danger
     PRI   Scheduling priority, see setpriority(2).
     SIG   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.
     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.

     -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 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)).

     -u    print information about a user process; the next


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PSTAT(8)	    UNIX Programmer's Manual		 PSTAT(8)


	   argument is its address as given by ps(1).  The pro-
	   cess must be in main memory, or the file used can be a
	   core image and the address 0.  Only the fields located
	   in the first page cluster can be located succesfully
	   if the process is in main memory.

     -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 inode table entry or socket struc-
	   ture for this file.
     OFFSET
	   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
     /vmunix	namelist
     /dev/kmem	default source of tables

SEE ALSO
     iostat(1), ps(1), systat(1), vmstat(1), stat(2), fs(5),
     K. Thompson, UNIX Implementation

BUGS
     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.


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