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PSTAT(8)                    System Manager's Manual                   PSTAT(8)



NAME
       pstat - print system facts

SYNOPSIS
       /etc/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 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.

       -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 seg-
             ment.

       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 (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  com-
                      plete
             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  vad-
                      vise(2).
             020000   process  has  advised  of  sequential behavior with vad-
                      vise(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.
             100000   process  used  4.1BSD  compatibility  mode signal primi-
                      tives, 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  con-
             trolling 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 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).

       -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:
             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.
       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.

       -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 asso-
             ciated socket structure.

       -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
       ps(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 dynam-
       ically allocated.



4th Berkeley Distribution        1 April 1981                         PSTAT(8)