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PSTAT(8)										 PSTAT(8)

NAME
       pstat - print system facts

SYNOPSIS
       /usr/sbin/pstat -aixptufT [ suboptions ] [ system ] [ corefile ]

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
	     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 (hexadecimal):
	     0001     loaded
	     0002     the scheduler process
	     0004     locked for swap out
	     0008     swapped out
	     0010     traced
	     0020     used in tracing
	     0080     in page-wait
	     0100     prevented from swapping during fork(2)
	     0200     will restore old mask after taking signal
	     0400     exiting
	     0800     doing physical I/O (bio.c)
	     1000     process resulted from a vfork(2) which is not yet complete
	     2000     another flag for vfork(2)
	     4000     process has no virtual memory, as it is a parent in the context of vfork(2)
	     8000     process is demand paging data pages from its text inode.
	     10000    process using sequential VM patterns
	     20000    process using random VM patterns
	     100000   using old 4.1-compatible signal semantics
	     200000   process needs profiling tick
	     400000   process is scanning descriptors during select
	     1000000  process page tables have changed
       POIP  number of pages currently being pushed out from this process.
       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 multiples 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 argument 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.  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 structure 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.

4th Berkeley Distribution		November 17, 1996				 PSTAT(8)
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