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

     pstat, swapinfo -- display system data structures

     pstat [-Tfhknst] [-M core [-N system]]
     swapinfo [-hk] [-M core [-N system]]

     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.

     -h      ``Human-readable'' output.  Use unit suffixes when printing swap
             partition sizes: Byte, Kilobyte, Megabyte, Gigabyte, Terabyte and

     -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-
             ing on each partition.  The Capacity reports the percentage of
             space used.

             If more than one partition is configured into the system, totals
             for all of the statistics will be reported in the final line of
             the report.

     -t      Print table for terminals with these headings:

             LINE    Device name.

             RAW     Number of characters in raw input queue.

             CAN     Number of characters in canonicalized input queue.

             OUT     Number of characters in output queue.

             IHIWT   High water mark for input.

             ILOWT   Low water mark for input.

             OHWT    High water mark for output.

             LWT     Low water mark for output.

             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 the controlling terminal.

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

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

     -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.

     ps(1), systat(1), stat(2), fs(5), iostat(8), vmstat(8)

     K. Thompson, UNIX Implementation.

     The pstat utility appeared in 4.0BSD.

     Does not understand NFS swap servers.

FreeBSD 6.2                     March 21, 2005                     FreeBSD 6.2


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