349 lines
8.1 KiB
Groff
349 lines
8.1 KiB
Groff
.\" $NetBSD: pstat.8,v 1.15 1997/06/05 06:14:16 mikel Exp $
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.\"
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.\" 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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.\" from: @(#)pstat.8 8.4 (Berkeley) 4/19/94
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.\"
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.Dd April 19, 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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.Nd display system data structures
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.Sh SYNOPSIS
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.Nm pstat
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.Oo
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.Fl T | Fl f | Fl s |
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.Fl t | Fl v
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.Oc
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.Op Fl kn
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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/kmem .
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The required namelist is taken from
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.Pa /netbsd
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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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The following options are available:
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.Bl -tag -width Ds
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.It Fl T
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Prints the number of used and free slots for open files, used vnodes, and swap
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space. It is useful for checking to see how large system tables 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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.Pp
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.Bl -tag -width indent -compact
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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 k
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Use 1K-byte blocks.
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.It Fl n
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Print devices by major/minor number rather than by name.
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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 LINE
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Physical device name.
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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 HWT
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High water mark for output.
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.It LWT
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Low water mark for output.
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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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.Pp
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.Bl -tag -width indent -compact
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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 T
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delay timeout in progress
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.It F
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outq has been flushed during DMA
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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 awaiting output
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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
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.It K
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further input blocked
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.It Y
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tty in async I/O mode
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.El
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.It SESS
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Session for which this is controlling terminal.
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.It PGID
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Current foreground process group associated with this 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 (see
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.Xr termios 4 ) ,
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.Ql tab
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for TABLDISC (see
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.Xr tb 4 ) ,
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.Ql slip
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for SLIPDISC (see
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.Xr sl 4 ) ,
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.Ql ppp
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for PPPDISC (see
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.Xr ppp 4 ) ,
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.Ql strip
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for STRIPDISC (see
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.Xr strip 4 ) .
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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 adosfs , afs , cd9660 , fdesc ,
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.Em ffs , kernfs , lfs , lofs ,
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.Em mfs , msdos , nfs , null ,
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.Em portal , procfs , umap , union ;
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.Em from
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is the filesystem 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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A list of letters representing vnode flags:
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.Pp
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.Bl -tag -width indent -compact
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.It R
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VROOT root of its file system.
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.It T
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VTEXT pure text prototype.
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.It L
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VXLOCK locked to change underlying type.
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.It W
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VXWANT process is waiting for vnode.
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.It S
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VSYSTEM vnode being used by kernel.
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.It A
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VALIASED vnode has an alias
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.It B
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VBWAIT waiting for output to complete
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.It D
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VDIROP lfs vnode involved in directory op.
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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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.Bl -tag -width indent -compact
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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 -compact
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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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.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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.Sh ENVIRONMENT VARIABLES
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.Bl -tag -width BLOCKSIZE
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.It Ev BLOCKSIZE
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If the environment variable
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.Ev BLOCKSIZE
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is set, and the
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.Fl k
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option is not specified, the block counts will be displayed in units of that
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size block.
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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 /netbsd
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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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Swap statistics are reported for all swap partitions compiled into the kernel,
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regardless of whether those partitions are being used.
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.Pp
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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 4.0BSD.
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