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pstat(8)

NAME

     pstat, swapinfo -- display system data structures

SYNOPSIS

     pstat [-Tfknst] [-M core [-N system]]
     swapinfo [-k] [-M core [-N system]]

DESCRIPTION

     The pstat utility displays open file entry, swap space utilization, ter-
     minal state, and vnode data structures.

     If invoked as swapinfo the -s option is implied, and only the -k option
     is legal.

     If the -M option is not specified, information is obtained from the cur-
     rently running kernel via the sysctl(3) interface.  Otherwise, informa-
     tion is read from the specified core file, using the name list from the
     specified kernel image (or from the default image).

     The following options are available:

     -n      Print devices out by major/minor instead of name.

     -k      Print sizes in kilobytes, regardless of the setting of the
	     BLOCKSIZE environment variable.

     -T      Print the number of used and free slots in several system tables.
	     This is useful for checking to see how large system tables have
	     become if the system is under heavy load.

     -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
		     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 vnode table entry or socket structure
		     for this file.

	     OFFSET  The file offset (see lseek(2)).

     -s      Print information about swap space usage on all the swap areas
	     compiled into the kernel.	The first column is the device name of
	     the partition.  The next column is the total space available in
	     the partition.  The Used column indicates the total blocks used
	     so far; the Available column indicates how much space is remain-

	     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.

	     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
		     c	     connection open
		     B	     busy doing output
		     A	     process is waiting for space in output queue
		     a	     process is waiting for output to complete
		     X	     open for exclusive use
		     S	     output stopped (ixon flow control)
		     m	     output stopped (carrier flow control)
		     o	     output stopped (CTS flow control)
		     d	     output stopped (DSR flow control)
		     K	     input stopped
		     Y	     send SIGIO for input events
		     D	     state for lowercase `\' work
		     E	     within a `\.../' for PRTRUB
		     L	     next character is literal
		     P	     retyping suspended input (PENDIN)
		     N	     counting tab width, ignore FLUSHO
		     l	     block mode input routine in use
		     s	     i/o being snooped
		     Z	     connection lost

	     SESS    Kernel address of the session structure.

	     PGID    Process group for which this is controlling terminal.

	     DISC    Line discipline; `term' for TTYDISC or `ntty' for NTTY-
		     DISC or `tab' for TABLDISC or `slip' for SLIPDISC or
		     `ppp' for PPPDISC.

     -M      Extract values associated with the name list from the specified
	     core.

     -N      If -M is also specified, extract the name list from the specified
	     system instead of the default, which is the kernel image the sys-
	     tem has booted from.

HISTORY

     The pstat utility appeared in 4.0BSD.

FreeBSD 5.4			 May 23, 2002			   FreeBSD 5.4

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