1130b656e5
This will make a number of things easier in the future, as well as (finally!) avoiding the Id-smashing problem which has plagued developers for so long. Boy, I'm glad we're not using sup anymore. This update would have been insane otherwise.
380 lines
8.0 KiB
Groff
380 lines
8.0 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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.\" @(#)pstat.8 8.4 (Berkeley) 4/19/94
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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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.\" From: @(#)pstat.8 8.4 (Berkeley) 4/19/94
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.\" $FreeBSD$
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.\"
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.Dd October 7, 1995
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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 pstat
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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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.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/kmem .
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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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Options are
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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 BLOCKSIZE
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environment variable.
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.It Fl T
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Prints 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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.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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.Df I
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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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.De
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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 L
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\- VXLOCK
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.It W
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\- VXWANT
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.It E
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\- VEXLOCK
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.It S
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\- VSHLOCK
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.It T
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\- VLWAIT
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.It A
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\- VALIASED
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.It B
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\- VBWAIT
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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 W
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wanted by another process (L flag is on)
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.It C
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changed time must be corrected
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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 Z
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someone waiting for a lock
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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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.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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.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/kmemxxx -compact
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.It Pa /kernel
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namelist
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.It Pa /dev/kmem
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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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.Rt Tn UNIX Rt Implementation ,
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.Ra K. Thompson
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.Re
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.Sh BUGS
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Does not understand NFS swap servers.
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.Sh HISTORY
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The
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.Nm pstat
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command appeared in
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.Bx 4.0 .
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