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414 lines
8.4 KiB
Groff
414 lines
8.4 KiB
Groff
.\" Copyright (c) 1980, 1991, 1993, 1994
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.\" The Regents of the University of California. All rights reserved.
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.\"
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.\" Redistribution and use in source and binary forms, with or without
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.\" modification, are permitted provided that the following conditions
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.\" are met:
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.\" 1. Redistributions of source code must retain the above copyright
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.\" notice, this list of conditions and the following disclaimer.
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.\" 2. Redistributions in binary form must reproduce the above copyright
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.\" notice, this list of conditions and the following disclaimer in the
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.\" documentation and/or other materials provided with the distribution.
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.\" 3. All advertising materials mentioning features or use of this software
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.\" must display the following acknowledgement:
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.\" This product includes software developed by the University of
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.\" California, Berkeley and its contributors.
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.\" 4. Neither the name of the University nor the names of its contributors
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.\" may be used to endorse or promote products derived from this software
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.\" without specific prior written permission.
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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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.\" SUCH DAMAGE.
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.\"
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.\" @(#)pstat.8 8.5 (Berkeley) 5/13/94
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.\" $FreeBSD$
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.\"
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.Dd May 13, 1994
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.Dt PSTAT 8
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.Os BSD 4
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.Sh NAME
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.Nm pstat ,
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.Nm swapinfo
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.Nd display system data structures
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.Sh SYNOPSIS
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.Nm
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.Op Fl Tfiknstv
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.Op Fl M Ar core
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.Op Fl N Ar system
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.Pp
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.Nm swapinfo
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.Op Fl k
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.Op Fl M Ar core
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.Op Fl N Ar system
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.Sh DESCRIPTION
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.Nm Pstat
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displays open file entry, swap space utilization,
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terminal state, and vnode data structures.
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If
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.Ar corefile
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is given, the information is sought there, otherwise
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in
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.Pa /dev/mem .
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The required namelist is taken from
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.Pa /kernel
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unless
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.Ar system
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is specified.
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.Pp
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If invoked as
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.Nm swapinfo
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the
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.Fl s
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option is implied, and only the
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.Fl k
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option is legal.
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.Pp
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The following options are available:
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.Bl -tag -width indent
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.It Fl n
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Print devices out by major/minor instead of name.
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.It Fl k
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Print sizes in kilobytes, regardless of the setting of the
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.Ev BLOCKSIZE
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environment variable.
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.It Fl T
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Print the number of used and free slots in the several system tables
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and is useful for checking to see how large system tables have become
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if the system is under heavy load.
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.It Fl f
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Print the open file table with these headings:
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.Bl -tag -width indent
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.It LOC
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The core location of this table entry.
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.It TYPE
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The type of object the file table entry points to.
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.It FLG
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Miscellaneous state variables encoded thus:
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.Bl -tag -width indent
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.It R
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open for reading
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.It W
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open for writing
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.It A
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open for appending
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.It S
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shared lock present
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.It X
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exclusive lock present
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.It I
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signal pgrp when data ready
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.El
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.It CNT
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Number of processes that know this open file.
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.It MSG
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Number of messages outstanding for this file.
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.It DATA
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The location of the vnode table entry or socket structure for this file.
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.It OFFSET
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The file offset (see
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.Xr lseek 2 ) .
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.El
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.It Fl s
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Print information about swap space usage on all the
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swap areas compiled into the kernel.
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The first column is the device name of the partition. The next column is
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the total space available in the partition. The
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.Ar Used
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column indicates the total blocks used so far; the
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.Ar Available
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column indicates how much space is remaining on each partition.
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The
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.Ar Capacity
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reports the percentage of space used.
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.Pp
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If more than one partition is configured into the system, totals for all
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of the statistics will be reported in the final line of the report.
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.Pp
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If you supply the option again, as in
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.Fl ss ,
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the system will display a breakdown of the swap bitmap/radix-tree.
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.It Fl t
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Print table for terminals
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with these headings:
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.Bl -tag -width indent
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.It RAW
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Number of characters in raw input queue.
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.It CAN
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Number of characters in canonicalized input queue.
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.It OUT
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Number of characters in output queue.
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.It MODE
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See
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.Xr tty 4 .
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.It ADDR
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Physical device address.
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.It DEL
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Number of delimiters (newlines) in canonicalized input queue.
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.It COL
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Calculated column position of terminal.
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.It STATE
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Miscellaneous state variables encoded thus:
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.Bl -tag -width indent
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.It T
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delay timeout in progress
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.It W
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waiting for open to complete
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.It O
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open
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.It F
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outq has been flushed during DMA
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.It C
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carrier is on
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.It c
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connection open
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.It B
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busy doing output
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.It A
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process is waiting for space in output queue
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.It a
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process is waiting for output to complete
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.It X
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open for exclusive use
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.It S
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output stopped (ixon flow control)
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.It m
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output stopped (carrier flow control)
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.It o
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output stopped (CTS flow control)
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.It d
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output stopped (DSR flow control)
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.It K
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input stopped
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.It Y
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send SIGIO for input events
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.It D
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state for lowercase
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.Ql \e
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work
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.It E
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within a
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.Ql \e.../
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for PRTRUB
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.It L
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next character is literal
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.It P
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retyping suspended input (PENDIN)
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.It N
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counting tab width, ignore FLUSHO
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.It l
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block mode input routine in use
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.It s
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i/o being snooped
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.It Z
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connection lost
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.El
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.It SESS
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Kernel address of the session structure.
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.It PGID
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Process group for which this is controlling terminal.
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.It DISC
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Line discipline;
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.Ql term
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for
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TTYDISC
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or
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.Ql ntty
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for
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NTTYDISC
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or
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.Ql tab
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for
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TABLDISC
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or
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.Ql slip
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for
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SLIPDISC
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or
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.Ql ppp
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for
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PPPDISC.
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.El
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.It Fl v
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Print the active vnodes. Each group of vnodes corresponding
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to a particular filesystem is preceded by a two line header. The
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first line consists of the following:
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.Pp
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.Bd -filled -offset indent
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.No *** MOUNT Em fstype from
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on
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.Em on fsflags
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.Ed
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.Pp
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where
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.Em fstype
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is one of
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.Em ufs , nfs , mfs , or pc ;
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.Em from
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is the filesystem is mounted from;
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.Em on
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is the directory
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the filesystem is mounted on; and
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.Em fsflags
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is a list
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of optional flags applied to the mount (see
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.Xr mount 8 ) .
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The second line is a header for the individual fields,
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the first part of which are fixed, and the second part are filesystem
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type specific. The headers common to all vnodes are:
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.Bl -tag -width indent
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.It ADDR
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Location of this vnode.
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.It TYP
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File type.
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.It VFLAG
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.Pp
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A list of letters representing vnode flags:
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.Bl -tag -width indent
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.It R
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\- VROOT
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.It T
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\- VTEXT
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.It S
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\- VSYSTEM
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.It t
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\- VISTTY
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.It L
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\- VXLOCK
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.It W
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\- VXWANT
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.It B
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\- VBWAIT
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.It V
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\- VOBJBUF
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.It C
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\- VCOPYONWRITE
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.It a
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\- VAGE
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.It l
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\- VOLOCK
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.It w
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\- VOWANT
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.It D
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\- VDOOMED
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.It F
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\- VFREE
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.It O
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\- VONWORKLST
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.It M
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\- VMOUNT
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.El
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.Pp
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.It USE
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The number of references to this vnode.
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.It HOLD
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The number of I/O buffers held by this vnode.
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.It FILEID
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The vnode fileid.
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In the case of
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.Em ufs
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this is the inode number.
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.It IFLAG
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Miscellaneous filesystem specific state variables encoded thus:
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.Bl -tag -width indent
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.It "For ufs:"
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.Pp
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.Bl -tag -width indent
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.It L
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locked
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.It U
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update time
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.Pq Xr fs 5
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must be corrected
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.It A
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access time must be corrected
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.It C
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changed time must be corrected
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.It U
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modification time most be corrected
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.It M
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contains modifications
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.It R
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has a rename in progress
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.It S
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shared lock applied
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.It E
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exclusive lock applied
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.It H
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inode is on hash list
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.It L
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modified, but don't write key
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.El
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.It "For nfs:"
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.Bl -tag -width indent
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.It W
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waiting for I/O buffer flush to complete
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.It P
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I/O buffers being flushed
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.It M
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locally modified data exists
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.It E
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an earlier write failed
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.It X
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non-cacheable lease (nqnfs)
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.It O
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write lease (nqnfs)
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.It G
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lease was evicted (nqnfs)
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.It A
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special file accessed
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.It U
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special file updated
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.It C
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special file times changed
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.It L
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node is locked
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.It w
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someone wants to lock
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.El
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.El
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.It SIZ/RDEV
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Number of bytes in an ordinary file, or
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major and minor device of special file.
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.El
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.It Fl i
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Same as
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.Fl v ,
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present for backwards-compatibility.
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.El
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.Sh FILES
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.Bl -tag -width /dev/memxxx -compact
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.It Pa /kernel
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namelist
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.It Pa /dev/mem
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default source of tables
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.El
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.Sh SEE ALSO
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.Xr ps 1 ,
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.Xr systat 1 ,
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.Xr stat 2 ,
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.Xr fs 5 ,
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.Xr iostat 8 ,
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.Xr vmstat 8
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.Rs
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.%T UNIX Implementation
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.%A K. Thompson
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.Re
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.Sh BUGS
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Does not understand
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.Tn NFS
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swap servers.
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.Sh HISTORY
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The
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.Nm
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command appeared in
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.Bx 4.0 .
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