628 lines
17 KiB
Groff
628 lines
17 KiB
Groff
.\" Copyright (c) 1980, 1990, 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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.\" 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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.\" @(#)ps.1 8.3 (Berkeley) 4/18/94
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.\" $FreeBSD$
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.\"
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.Dd March 27, 2004
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.Dt PS 1
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.Os
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.Sh NAME
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.Nm ps
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.Nd process status
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.Sh SYNOPSIS
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.Nm
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.Op Fl aCcefHhjlmrSTuvwXxZ
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.Oo Fl G Ar gid Ns Xo
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.Op , Ns Ar gid Ns No ...
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.Xc
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.Oc
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.Op Fl M Ar core
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.Op Fl N Ar system
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.Op Fl O Ar fmt
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.Op Fl o Ar fmt
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.Oo Fl p Ar pid Ns Xo
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.Op , Ns Ar pid Ns No ...
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.Xc
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.Oc
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.Oo Fl t Ar tty Ns Xo
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.Op , Ns Ar tty Ns No ...
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.Xc
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.Oc
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.Oo Fl U Ar username Ns Xo
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.Op , Ns Ar username Ns No ...
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.Xc
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.Oc
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.Nm
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.Op Fl L
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.Sh DESCRIPTION
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The
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.Nm
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utility
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displays a header line, followed by lines containing information about
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all of your
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processes that have controlling terminals.
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.Pp
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A different set of processes can be selected for display by using any
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combination of the
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.Fl a , G , p , T , t
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and
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.Fl U
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options.
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If more than one of these options are given, then
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.Nm
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will select all processes which are matched by at least one of the
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given options.
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.Pp
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For the processes which have been selected for display,
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.Nm
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will usually display one line per process.
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The
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.Fl H
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option may result in multiple output lines (one line per thread) for
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some processes.
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By default all of these output lines are sorted first by controlling
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terminal, then by process
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.Tn ID .
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The
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.Fl m , r , u ,
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and
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.Fl v
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options will change the sort order.
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If more than one sorting option was given, then the selected processes
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will be sorted by the last sorting option which was specified.
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.Pp
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For the processes which have been selected for display, the information
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to display is selected based on a set of keywords (see the
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.Fl L
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.Fl O
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and
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.Fl o
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options).
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The default output format includes, for each process, the process'
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.Tn ID ,
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controlling terminal, cpu time (including both user and system time),
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state, and associated command.
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.Pp
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The process file system (see
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.Xr procfs 5 )
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should be mounted when
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.Nm
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is executed, otherwise not all information will be available.
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.Pp
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The options are as follows:
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.Bl -tag -width indent
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.It Fl a
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Display information about other users' processes as well as your own.
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This will skip any processes which do not have a controlling teminal,
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unless the
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.Fl x
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option is also specified.
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This can be disabled by setting the
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.Va security.bsd.see_other_uids
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sysctl to zero.
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.It Fl c
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Change the ``command'' column output to just contain the executable name,
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rather than the full command line.
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.It Fl C
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Change the way the cpu percentage is calculated by using a ``raw''
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cpu calculation that ignores ``resident'' time (this normally has
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no effect).
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.It Fl e
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Display the environment as well.
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.It Fl f
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Show commandline and environment information about swapped out processes.
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This option is honored only if the uid of the user is 0.
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.It Fl G
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Display information about processes which are running with the specified
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real group
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.Tn ID(s) .
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.It Fl H
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Show all of the
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.Em kernel visible
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threads associated with each process. Depending on the threading package that
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is in use, this may show only the process, only the kernel scheduled entities,
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or all of the process threads.
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.It Fl h
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Repeat the information header as often as necessary to guarantee one
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header per page of information.
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.It Fl j
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Print information associated with the following keywords:
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user, pid, ppid, pgid, jobc, state, tt, time and command.
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.It Fl L
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List the set of keywords available for the
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.Fl O
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and
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.Fl o
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options.
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.It Fl l
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Display information associated with the following keywords:
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uid, pid, ppid, cpu, pri, nice, vsz, rss, mwchan, state, tt, time
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and command.
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.It Fl M
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Extract values associated with the name list from the specified core
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instead of the currently running system.
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.It Fl m
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Sort by memory usage, instead of the combination of controlling
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terminal and process
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.Tn ID .
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.It Fl N
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Extract the name list from the specified system instead of the default,
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which is the kernel image the system has booted from.
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.It Fl O
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Add the information associated with the space or comma separated list
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of keywords specified, after the process
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.Tn ID ,
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in the default information
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display.
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Keywords may be appended with an equals (``='') sign and a string.
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This causes the printed header to use the specified string instead of
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the standard header.
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.It Fl o
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Display information associated with the space or comma separated
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list of keywords specified.
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Multiple keywords may also be given in the form of more than one
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.Fl o
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option.
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Keywords may be appended with an equals (``='') sign and a string.
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This causes the printed header to use the specified string instead of
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the standard header.
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.It Fl p
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Display information about processes which match the specified process
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.Tn ID(s) .
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.It Fl r
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Sort by current cpu usage, instead of the combination of controlling
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terminal and process
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.Tn ID .
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.It Fl S
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Change the way the process time is calculated by summing all exited
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children to their parent process.
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.It Fl T
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Display information about processes attached to the device associated
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with the standard input.
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.It Fl t
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Display information about processes attached to the specified terminal
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device(s).
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.It Fl U
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Display the processes belonging to the specified
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.Ar username Ns (s) .
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.It Fl u
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Display information associated with the following keywords:
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user, pid, %cpu, %mem, vsz, rss, tt, state, start, time and command.
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The
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.Fl u
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option implies the
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.Fl r
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option.
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.It Fl v
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Display information associated with the following keywords:
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pid, state, time, sl, re, pagein, vsz, rss, lim, tsiz,
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%cpu, %mem and command.
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The
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.Fl v
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option implies the
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.Fl m
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option.
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.It Fl w
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Use 132 columns to display information, instead of the default which
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is your window size.
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If the
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.Fl w
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option is specified more than once,
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.Nm
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will use as many columns as necessary without regard for your window size.
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.It Fl X
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When displaying processes matched by other options, skip any processes
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which do not have a controlling terminal.
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.It Fl x
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When displaying processes matched by other options, include processes
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which do not have a controlling terminal.
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This is the opposite of the
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.Fl X
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option.
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If both
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.Fl X
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and
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.Fl x
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are specified in the same command, then
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.Nm
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will use the one which was specified last.
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.It Fl Z
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Add label to the list of keywords for which
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.Nm
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will display information.
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.El
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.Pp
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A complete list of the available keywords are listed below.
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Some of these keywords are further specified as follows:
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.Bl -tag -width lockname
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.It %cpu
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The cpu utilization of the process; this is a decaying average over up to
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a minute of previous (real) time.
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Since the time base over which this is computed varies (since processes may
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be very young) it is possible for the sum of all
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.Tn \&%CPU
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fields to exceed 100%.
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.It %mem
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The percentage of real memory used by this process.
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.It flags
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The flags associated with the process as in
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the include file
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.In sys/proc.h :
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.Bl -column P_STOPPED_SINGLE 0x4000000
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.It Dv "P_ADVLOCK" Ta No "0x00001 Process may hold a POSIX advisory lock"
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.It Dv "P_CONTROLT" Ta No "0x00002 Has a controlling terminal"
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.It Dv "P_KTHREAD" Ta No "0x00004 Kernel thread"
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.It Dv "P_NOLOAD" Ta No "0x00008 Ignore during load avg calculations"
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.It Dv "P_PPWAIT" Ta No "0x00010 Parent is waiting for child to exec/exit"
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.It Dv "P_PROFIL" Ta No "0x00020 Has started profiling"
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.It Dv "P_STOPPROF" Ta No "0x00040 Has thread in requesting to stop prof"
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.It Dv "P_SUGID" Ta No "0x00100 Had set id privileges since last exec"
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.It Dv "P_SYSTEM" Ta No "0x00200 System proc: no sigs, stats or swapping"
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.It Dv "P_SINGLE_EXIT" Ta No "0x00400 Threads suspending should exit, not wait"
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.It Dv "P_TRACED" Ta No "0x00800 Debugged process being traced"
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.It Dv "P_WAITED" Ta No "0x01000 Someone is waiting for us"
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.It Dv "P_WEXIT" Ta No "0x02000 Working on exiting"
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.It Dv "P_EXEC" Ta No "0x04000 Process called exec"
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.It Dv "P_SA" Ta No "0x08000 Using scheduler activations"
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.It Dv "P_CONTINUED" Ta No "0x10000 Proc has continued from a stopped state"
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.It Dv "P_STOPPED_SIG" Ta No "0x20000 Stopped due to SIGSTOP/SIGTSTP"
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.It Dv "P_STOPPED_TRACE" Ta No "0x40000 Stopped because of tracing"
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.It Dv "P_STOPPED_SINGLE" Ta No "0x80000 Only one thread can continue"
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.It Dv "P_PROTECTED" Ta No "0x100000 Do not kill on memory overcommit"
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.It Dv "P_SIGEVENT" Ta No "0x200000 Process pending signals changed"
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.It Dv "P_JAILED" Ta No "0x1000000 Process is in jail"
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.It Dv "P_INEXEC" Ta No "0x4000000 Process is in execve()"
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.El
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.It label
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The MAC label of the process.
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.It lim
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The soft limit on memory used, specified via a call to
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.Xr setrlimit 2 .
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.It lstart
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The exact time the command started, using the ``%c'' format described in
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.Xr strftime 3 .
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.It lockname
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The name of the lock that the process is currently blocked on.
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If the name is invalid or unknown, then
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.Dq ???\&
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is displayed.
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.It mwchan
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The event name if the process is blocked normally, or the lock name if
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the process is blocked on a lock.
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See the wchan and lockname keywords
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for details.
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.It nice
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The process scheduling increment (see
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.Xr setpriority 2 ) .
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.It rss
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the real memory (resident set) size of the process (in 1024 byte units).
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.It start
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The time the command started.
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If the command started less than 24 hours ago, the start time is
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displayed using the ``%l:ps.1p'' format described in
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.Xr strftime 3 .
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If the command started less than 7 days ago, the start time is
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displayed using the ``%a6.15p'' format.
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Otherwise, the start time is displayed using the ``%e%b%y'' format.
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.It state
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The state is given by a sequence of characters, for example,
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.Dq Tn RWNA .
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The first character indicates the run state of the process:
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.Pp
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.Bl -tag -width indent -compact
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.It D
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Marks a process in disk (or other short term, uninterruptible) wait.
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.It I
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Marks a process that is idle (sleeping for longer than about 20 seconds).
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.It L
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Marks a process that is waiting to acquire a lock.
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.It R
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Marks a runnable process.
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.It S
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Marks a process that is sleeping for less than about 20 seconds.
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.It T
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Marks a stopped process.
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.It W
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Marks an idle interrupt thread.
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.It Z
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Marks a dead process (a ``zombie'').
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.El
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.Pp
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Additional characters after these, if any, indicate additional state
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information:
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.Pp
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.Bl -tag -width indent -compact
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.It +
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The process is in the foreground process group of its control terminal.
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.It <
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The process has raised
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.Tn CPU
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scheduling priority.
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.It E
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The process is trying to exit.
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.It J
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Marks a process which is in
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.Xr jail 2 .
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The hostname of the prison can be found in
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.Ql /proc/<pid>/status .
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.It L
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The process has pages locked in core (for example, for raw
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.Tn I/O ) .
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.It N
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The process has reduced
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.Tn CPU
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scheduling priority (see
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.Xr setpriority 2 ) .
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.It s
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The process is a session leader.
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.It V
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The process is suspended during a
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.Xr vfork 2 .
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.It W
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The process is swapped out.
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.It X
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The process is being traced or debugged.
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.El
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.It tt
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An abbreviation for the pathname of the controlling terminal, if any.
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The abbreviation consists of the three letters following
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.Pa /dev/tty ,
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or, for the console, ``con''.
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This is followed by a ``-'' if the process can no longer reach that
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controlling terminal (i.e., it has been revoked).
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.It wchan
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The event (an address in the system) on which a process waits.
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When printed numerically, the initial part of the address is
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trimmed off and the result is printed in hex, for example, 0x80324000 prints
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as 324000.
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.El
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.Pp
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When printing using the command keyword, a process that has exited and
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has a parent that has not yet waited for the process (in other words, a zombie)
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is listed as ``<defunct>'', and a process which is blocked while trying
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to exit is listed as ``<exiting>''.
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The
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.Nm
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utility
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makes an educated guess as to the file name and arguments given when the
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process was created by examining memory or the swap area.
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The method is inherently somewhat unreliable and in any event a process
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is entitled to destroy this information, so the names cannot be depended
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on too much.
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The ucomm (accounting) keyword can, however, be depended on.
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.Sh KEYWORDS
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The following is a complete list of the available keywords and their
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meanings.
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Several of them have aliases (keywords which are synonyms).
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.Pp
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.Bl -tag -width sigignore -compact
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.It %cpu
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percentage cpu usage (alias pcpu)
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.It %mem
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percentage memory usage (alias pmem)
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.It acflag
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accounting flag (alias acflg)
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.It args
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command and arguments
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.It comm
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command
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.It command
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command and arguments
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.It cpu
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short-term cpu usage factor (for scheduling)
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.It etime
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elapsed running time
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.It flags
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the process flags, in hexadecimal (alias f)
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.It inblk
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total blocks read (alias inblock)
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.It jobc
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job control count
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.It ktrace
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tracing flags
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.It label
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MAC label
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.It lim
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memoryuse limit
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.It logname
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login name of user who started the process
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.It lstart
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time started
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.It majflt
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total page faults
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.It minflt
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total page reclaims
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.It msgrcv
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total messages received (reads from pipes/sockets)
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.It msgsnd
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total messages sent (writes on pipes/sockets)
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.It lockname
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lock currently blocked on (as a symbolic name)
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.It mwchan
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wait channel or lock currently blocked on
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.It nice
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nice value (alias ni)
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.It nivcsw
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total involuntary context switches
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.It nsigs
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total signals taken (alias nsignals)
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.It nswap
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total swaps in/out
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.It nvcsw
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total voluntary context switches
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.It nwchan
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wait channel (as an address)
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.It oublk
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total blocks written (alias oublock)
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.It paddr
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swap address
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.It pagein
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pageins (same as majflt)
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.It pgid
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process group number
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.It pid
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process
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.Tn ID
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.It poip
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pageouts in progress
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.It ppid
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parent process
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.Tn ID
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.It pri
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scheduling priority
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.It re
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core residency time (in seconds; 127 = infinity)
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.It rgid
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real group
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.Tn ID
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.It rgroup
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group name (from rgid)
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.It rlink
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reverse link on run queue, or 0
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.It rss
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resident set size
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.It rtprio
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realtime priority (101 = not a realtime process)
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.It ruid
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real user
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.Tn ID
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.It ruser
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user name (from ruid)
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.It sid
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session
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.Tn ID
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.It sig
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pending signals (alias pending)
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.It sigcatch
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caught signals (alias caught)
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|
.It sigignore
|
|
ignored signals (alias ignored)
|
|
.It sigmask
|
|
blocked signals (alias blocked)
|
|
.It sl
|
|
sleep time (in seconds; 127 = infinity)
|
|
.It start
|
|
time started
|
|
.It state
|
|
symbolic process state (alias stat)
|
|
.It svgid
|
|
saved gid from a setgid executable
|
|
.It svuid
|
|
saved uid from a setuid executable
|
|
.It tdev
|
|
control terminal device number
|
|
.It time
|
|
accumulated cpu time, user + system (alias cputime)
|
|
.It tpgid
|
|
control terminal process group
|
|
.Tn ID
|
|
.\".It trss
|
|
.\"text resident set size (in Kbytes)
|
|
.It tsid
|
|
control terminal session
|
|
.Tn ID
|
|
.It tsiz
|
|
text size (in Kbytes)
|
|
.It tt
|
|
control terminal name (two letter abbreviation)
|
|
.It tty
|
|
full name of control terminal
|
|
.It uprocp
|
|
process pointer
|
|
.It ucomm
|
|
name to be used for accounting
|
|
.It uid
|
|
effective user
|
|
.Tn ID
|
|
.It upr
|
|
scheduling priority on return from system call (alias usrpri)
|
|
.It user
|
|
user name (from uid)
|
|
.It vsz
|
|
virtual size in Kbytes (alias vsize)
|
|
.It wchan
|
|
wait channel (as a symbolic name)
|
|
.It xstat
|
|
exit or stop status (valid only for stopped or zombie process)
|
|
.El
|
|
.Sh ENVIRONMENT
|
|
The following environment variables affect the execution of
|
|
.Nm :
|
|
.Bl -tag -width ".Ev COLUMNS"
|
|
.It Ev COLUMNS
|
|
If set, specifies the user's preferred output width in column positions.
|
|
By default,
|
|
.Nm
|
|
attempts to automatically determine the terminal width.
|
|
.El
|
|
.Sh FILES
|
|
.Bl -tag -width ".Pa /boot/kernel/kernel" -compact
|
|
.It Pa /dev/lomac
|
|
interface used to query the
|
|
.Xr lomac 4
|
|
KLD
|
|
.It Pa /boot/kernel/kernel
|
|
default system namelist
|
|
.It Pa /proc
|
|
the mount point of
|
|
.Xr procfs 5
|
|
.El
|
|
.Sh SEE ALSO
|
|
.Xr kill 1 ,
|
|
.Xr w 1 ,
|
|
.Xr kvm 3 ,
|
|
.Xr strftime 3 ,
|
|
.Xr lomac 4 ,
|
|
.Xr procfs 5 ,
|
|
.Xr pstat 8 ,
|
|
.Xr sysctl 8 ,
|
|
.Xr mutex 9
|
|
.Sh STANDARDS
|
|
For historical reasons,
|
|
.Nm
|
|
utility under
|
|
.Fx
|
|
supports a different set of options from what is described by
|
|
.St -p1003.2 ,
|
|
and what is supported on non-BSD operating systems.
|
|
.Sh HISTORY
|
|
The
|
|
.Nm
|
|
command appeared in
|
|
.At v4 .
|
|
.Sh BUGS
|
|
Since
|
|
.Nm
|
|
cannot run faster than the system and is run as any other scheduled
|
|
process, the information it displays can never be exact.
|
|
.Pp
|
|
The
|
|
.Nm
|
|
utility does not correctly display argument lists containing multibyte
|
|
characters.
|