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NetBSD 6.1.5 - man page for pstat (netbsd section 8)

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

NAME
     pstat -- display system data structures

SYNOPSIS
     pstat [-T | -f | -s | -t | -v] [-ghkmn] [-M core] [-N system]

DESCRIPTION
     pstat displays open file entry, swap space utilization, terminal state, and vnode data
     structures.  If corefile is given, the information is sought there, otherwise in /dev/kmem.
     The required namelist is taken from /netbsd unless system is specified.

     The following options are available:

     -T      Prints the number of used and free slots for open files, used vnodes, and swap
	     space.  This option is useful for checking to see how large system tables 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
		     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 vnode table entry or socket structure for this file.

	     USE     Number of active users of this open file.

	     IFLG    Value of internal flags.

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

     -g      The -g option uses (1024 * 1024 * 1024) byte blocks instead of the default 512 byte.

     -h      Use humanize_number(3) to display (swap) sizes.

     -k      Use 1K-byte blocks.

     -m      The -m option uses (1024 * 1024) byte blocks instead of the default 512 byte.

     -n      Print devices by major/minor number rather than by name.

     -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 remaining 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 sta-
	     tistics will be reported in the final line of the report.

     -t      Print table for terminals with these headings:

	     LINE    Physical 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.

	     HWT     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
		     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
		     K	     further input blocked
		     Y	     tty in async I/O mode
		     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
		     >	     tty used for dialout

	     SESS    Session for which this is controlling terminal.

	     PGID    Current foreground process group associated with this terminal.

	     DISC    Line discipline; 'term' for TTYDISC (see termios(4)), 'tab' for TABLDISC
		     (see tb(4)), 'slip' for SLIPDISC (see sl(4)), 'ppp' for PPPDISC (see
		     ppp(4)), 'strip' for STRIPDISC (see strip(4)), 'hdlc' for HDLCDISC.

     -v      Print the active vnodes.  Each group of vnodes corresponding to a particular
	     filesystem is preceded by a two line header.  The first line consists of the follow-
	     ing:

	     *** MOUNT fstype from on on fsflags

	     where fstype is one of adosfs, afs, cd9660, fdesc, ffs, ext2fs, kernfs, lfs, lofs,
	     mfs, msdos, nfs, null, procfs, umap, union; from is the filesystem mounted from; on
	     is the directory the filesystem is mounted on; and fsflags is a list of optional
	     flags applied to the mount (see mount(8)).  The second line is a header for the
	     individual fields, the first part of which are fixed, and the second part are
	     filesystem type specific.	The headers common to all vnodes are:

	     ADDR    Location of this vnode.

	     TYP     File type.

	     VFLAG   A list of letters representing vnode flags:

		     R	     VROOT root of its file system.
		     T	     VTEXT pure text prototype.
		     S	     VSYSTEM vnode being used by kernel.
		     I	     VISTTY vnode is a tty.
		     E	     VEXECMAP vnode has PROT_EXEC mappings.
		     L	     VXLOCK locked to change underlying type.
		     W	     VXWANT process is waiting for vnode.
		     B	     VBWAIT waiting for output to complete.
		     A	     VALIASED vnode has an alias.
		     D	     VDIROP lfs vnode involved in directory op.
		     Y	     VLAYER vnode is on layer filesystem.
		     O	     VONWORKLST vnode is on syncer work-list.

	     USE     The number of references to this vnode.

	     HOLD    The number of I/O buffers held by this vnode.

	     TAG     The type of underlying data.

	     NPAGE   The number of pages in this vnode.

	     FILEID  The vnode fileid.	In the case of ffs or ext2fs this is the inode number.

	     IFLAG   Miscellaneous filesystem specific state variables encoded thus:

		     For ffs, lfs or ext2fs:
			     A	     access time must be corrected
			     C	     changed time must be corrected
			     U	     update time (fs(5)) must be corrected
			     M	     contains modifications
			     a	     has been accessed
			     R	     has a rename in progress
			     S	     shared lock applied
			     E	     exclusive lock applied
			     c	     is being cleaned (LFS)
			     D	     directory operation in progress (LFS)
			     s	     blocks to be freed in free count

		     For nfs:
			     W	     waiting for I/O buffer flush to complete
			     P	     I/O buffers being flushed
			     M	     locally modified data exists
			     E	     an earlier write failed
			     A	     special file accessed
			     U	     special file updated
			     C	     special file times changed

	     SIZ/RDEV
		     Number of bytes in an ordinary file, or major and minor device of special
		     file.

ENVIRONMENT
     BLOCKSIZE	If the environment variable BLOCKSIZE is set, and the -k option is not specified,
		the block counts will be displayed in units of that size block.

FILES
     /netbsd	   namelist
     /dev/kmem	   default source of tables

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

     K. Thompson, UNIX Implementation.

HISTORY
     The pstat command appeared in 4.0BSD.

BUGS
     Swap statistics are reported for all swap partitions compiled into the kernel, regardless of
     whether those partitions are being used.

     Does not understand NFS swap servers.

BSD					 December 5, 2009				      BSD


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