469 lines
9.5 KiB
Groff
469 lines
9.5 KiB
Groff
.\"-
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.\" Copyright (c) 2007-2009 Robert N. M. Watson
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.\" 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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.\"
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.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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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.\" $FreeBSD$
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.\"
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.Dd October 27, 2013
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.Dt PROCSTAT 1
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.Os
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.Sh NAME
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.Nm procstat
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.Nd get detailed process information
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.Sh SYNOPSIS
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.Nm
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.Op Fl h
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.Op Fl n
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.Op Fl C
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.Op Fl w Ar interval
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.Op Fl b | c | e | f | i | j | k | l | s | t | v | x
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.Op Fl a | Ar pid | Ar core ...
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.Sh DESCRIPTION
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The
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.Nm
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utility displays detailed information about the processes identified by the
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.Ar pid
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arguments, or if the
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.Fl a
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flag is used, all processes.
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It can also display information extracted from a process core file, if
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the core file is specified as the argument.
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.Pp
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By default, basic process statistics are printed; one of the following
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options may be specified in order to select more detailed process information
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for printing:
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.Bl -tag -width indent
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.It Fl b
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Display binary information for the process.
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.It Fl c
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Display command line arguments for the process.
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.It Fl e
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Display environment variables for the process.
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.It Fl f
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Display file descriptor information for the process.
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.It Fl i
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Display signal pending and disposition information for the process.
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.It Fl j
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Display signal pending and blocked information for the process threads.
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.It Fl k
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Display the stacks of kernel threads in the process, excluding stacks of
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threads currently running on a CPU and threads with stacks swapped to disk.
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If the flag is repeated, function offsets as well as function names are
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printed.
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.It Fl l
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Display resource limits for the process.
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.It Fl s
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Display security credential information for the process.
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.It Fl t
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Display thread information for the process.
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.It Fl v
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Display virtual memory mappings for the process.
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.It Fl x
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Display ELF auxiliary vector for the process.
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.El
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.Pp
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All options generate output in the format of a table, the first field of
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which is the process ID to which the row of information corresponds.
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The
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.Fl h
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flag may be used to suppress table headers.
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.Pp
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The
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.Fl w
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flag may be used to specify a wait interval at which to repeat the printing
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of the requested process information.
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If the
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.Fl w
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flag is not specified, the output will not repeat.
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.Pp
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The
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.Fl C
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flag requests the printing of additional capability information in the file
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descriptor view.
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.Pp
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Some information, such as VM and file descriptor information, is available
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only to the owner of a process or the superuser.
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.Ss Binary Information
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Display the process ID, command, and path to the process binary:
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.Pp
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.Bl -tag -width indent -compact
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.It PID
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process ID
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.It COMM
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command
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.It OSREL
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osreldate for process binary
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.It PATH
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path to process binary (if available)
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.El
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.Ss Command Line Arguments
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Display the process ID, command, and command line arguments:
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.Pp
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.Bl -tag -width indent -compact
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.It PID
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process ID
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.It COMM
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command
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.It ARGS
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command line arguments (if available)
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.El
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.Ss File Descriptors
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Display detailed information about each file descriptor referenced by a
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process, including the process ID, command, file descriptor number, and
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per-file descriptor object information, such as object type and file system
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path.
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By default, the following information will be printed:
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.Pp
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.Bl -tag -width indent -compact
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.It PID
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process ID
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.It COMM
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command
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.It FD
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file descriptor number or cwd/root/jail
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.It T
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file descriptor type
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.It V
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vnode type
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.It FLAGS
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file descriptor flags
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.It REF
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file descriptor reference count
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.It OFFSET
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file descriptor offset
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.It PRO
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network protocol
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.It NAME
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file path or socket addresses (if available)
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.El
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.Pp
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The following file descriptor types may be displayed:
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.Pp
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.Bl -tag -width X -compact
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.It c
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crypto
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.It e
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POSIX semaphore
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.It f
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fifo
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.It h
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shared memory
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.It k
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kqueue
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.It m
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message queue
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.It p
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pipe
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.It s
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socket
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.It t
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pseudo-terminal master
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.It v
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vnode
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.El
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.Pp
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The following vnode types may be displayed:
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.Pp
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.Bl -tag -width X -compact
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.It -
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not a vnode
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.It b
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block device
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.It c
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character device
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.It d
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directory
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.It f
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fifo
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.It l
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symbolic link
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.It r
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regular file
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.It s
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socket
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.It x
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revoked device
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.El
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.Pp
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The following file descriptor flags may be displayed:
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.Pp
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.Bl -tag -width X -compact
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.It r
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read
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.It w
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write
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.It a
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append
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.It s
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async
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.It f
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fsync
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.It n
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non-blocking
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.It d
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direct I/O
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.It l
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lock held
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.El
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.Pp
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If the
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.Fl C
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flag is specified, the vnode type, reference count, and offset fields will be
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omitted, and a new capabilities field will be included listing capabilities,
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as described in
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.Xr cap_rights_limit 2 ,
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present for each capability descriptor.
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.Ss Signal Disposition Information
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Display signal pending and disposition for a process:
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.Pp
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.Bl -tag -width ident -compact
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.It PID
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process ID
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.It COMM
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command
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.It SIG
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signal name
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.It FLAGS
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process signal disposition details, three symbols
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.Bl -tag -width X -compact
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.It P
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if signal is pending in the global process queue, - otherwise
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.It I
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if signal delivery disposition is SIGIGN, - otherwise
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.It C
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if signal delivery is to catch it, - otherwise
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.El
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.El
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.Pp
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If
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.Fl n
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switch is given, the signal numbers are shown instead of signal names.
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.Ss Thread Signal Information
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Display signal pending and blocked for a process threads:
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.Pp
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.Bl -tag -width ident -compact
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.It PID
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process ID
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.It COMM
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command
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.It TID
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thread ID
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.It SIG
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signal name
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.It FLAGS
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thread signal delivery status, two symbols
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.Bl -tag -width X -compact
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.It P
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if signal is pending for the thread, - otherwise
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.It B
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if signal is blocked in the thread signal mask, - if not blocked
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.El
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.El
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.Pp
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The
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.Fl n
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switch has the same effect as for the
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.Fl i
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switch, the signals numbers are shown instead of signal names.
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.Ss Kernel Thread Stacks
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Display kernel thread stacks for a process, allowing further interpretation
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of thread wait channels.
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If the
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.Fl k
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flag is repeated, function offsets, not just function names, are printed.
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.Pp
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This feature requires
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.Cd "options STACK"
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or
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.Cd "options DDB"
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to be compiled into the kernel.
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.Pp
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.Bl -tag -width indent -compact
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.It PID
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process ID
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.It TID
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thread ID
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.It COMM
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command
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.It TDNAME
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thread name
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.It KSTACK
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kernel thread call stack
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.El
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.Ss Security Credentials
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Display process credential information:
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.Pp
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.Bl -tag -width indent -compact
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.It PID
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process ID
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.It COMM
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command
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.It EUID
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effective user ID
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.It RUID
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real user ID
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.It SVUID
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saved user ID
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.It EGID
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effective group ID
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.It RGID
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real group ID
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.It SVGID
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saved group ID
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.It UMASK
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file creation mode mask
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.It FLAGS
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credential flags
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.It GROUPS
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group set
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.El
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.Pp
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The following credential flags may be displayed:
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.Pp
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.Bl -tag -width X -compact
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.It C
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capability mode
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.El
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.Ss Thread Information
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Display per-thread information, including process ID, per-thread ID, name,
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CPU, and execution state:
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.Pp
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.Bl -tag -width indent -compact
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.It PID
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process ID
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.It TID
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thread ID
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.It COMM
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command
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.It TDNAME
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thread name
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.It CPU
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current or most recent CPU run on
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.It PRI
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thread priority
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.It STATE
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thread state
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.It WCHAN
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thread wait channel
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.El
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.Ss Virtual Memory Mappings
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Display process virtual memory mappings, including addresses, mapping
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meta-data, and mapped object information:
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.Pp
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.Bl -tag -width indent -compact
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.It PID
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process ID
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.It START
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starting address of mapping
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.It END
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ending address of mapping
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.It PRT
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protection flags
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.It RES
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resident pages
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.It PRES
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private resident pages
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.It REF
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reference count
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.It SHD
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shadow page count
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.It FL
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mapping flags
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.It TP
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VM object type
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.El
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.Pp
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The following protection flags may be displayed:
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.Pp
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.Bl -tag -width X -compact
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.It r
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read
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.It w
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write
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.It x
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execute
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.El
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.Pp
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The following VM object types may be displayed:
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.Pp
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.Bl -tag -width XX -compact
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.It --
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none
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.It dd
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dead
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.It df
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default
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.It dv
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device
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.It ph
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physical
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.It sg
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scatter/gather
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.It sw
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swap
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.It vn
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vnode
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.El
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.Pp
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The following mapping flags may be displayed:
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.Pp
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.Bl -tag -width X -compact
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.It C
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copy-on-write
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.It N
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needs copy
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.It S
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one or more superpage mappings are used
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.It D
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grows down (top-down stack)
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.It U
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grows up (bottom-up stack)
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.El
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.Sh EXIT STATUS
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.Ex -std
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.Sh SEE ALSO
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.Xr fstat 1 ,
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.Xr ps 1 ,
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.Xr sockstat 1 ,
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.Xr cap_enter 2 ,
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.Xr cap_rights_limit 2 ,
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.Xr ddb 4 ,
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.Xr stack 9
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.Sh AUTHORS
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.An Robert N M Watson
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.Sh BUGS
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Some field values may include spaces, which limits the extent to which the
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output of
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.Nm
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may be mechanically parsed.
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.Pp
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The display of open file or memory mapping pathnames is implemented using the
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kernel's name cache.
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If a file system does not use the name cache, or the path to a file is not in
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the cache, a path will not be displayed.
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.Pp
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.Nm
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currently supports extracting data only from a live kernel, and not from
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kernel crash dumps.
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