1.\" Copyright (c) 1980, 1991, 1993, 1994 2.\" The Regents of the University of California. All rights reserved. 3.\" Copyright (c) 2002 Networks Associates Technology, Inc. 4.\" All rights reserved. 5.\" 6.\" Portions of this software was developed for the FreeBSD Project by 7.\" ThinkSec AS and NAI Labs, the Security Research Division of Network 8.\" Associates, Inc. under DARPA/SPAWAR contract N66001-01-C-8035 9.\" ("CBOSS"), as part of the DARPA CHATS research program. 10.\" 11.\" Redistribution and use in source and binary forms, with or without 12.\" modification, are permitted provided that the following conditions 13.\" are met: 14.\" 1. Redistributions of source code must retain the above copyright 15.\" notice, this list of conditions and the following disclaimer. 16.\" 2. Redistributions in binary form must reproduce the above copyright 17.\" notice, this list of conditions and the following disclaimer in the 18.\" documentation and/or other materials provided with the distribution. 19.\" 3. Neither the name of the University nor the names of its contributors 20.\" may be used to endorse or promote products derived from this software 21.\" without specific prior written permission. 22.\" 23.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33.\" SUCH DAMAGE. 34.\" 35.Dd July 8, 2022 36.Dt PSTAT 8 37.Os 38.Sh NAME 39.Nm pstat , 40.Nm swapinfo 41.Nd display system data structures 42.Sh SYNOPSIS 43.Nm 44.Op Fl Tfghkmnst 45.Op Fl M Ar core Op Fl N Ar system 46.Nm swapinfo 47.Op Fl ghkm 48.Op Fl M Ar core Op Fl N Ar system 49.Sh DESCRIPTION 50The 51.Nm 52utility displays open file entry, swap space utilization, 53terminal state, and vnode data structures. 54.Pp 55If invoked as 56.Nm swapinfo 57the 58.Fl s 59option is implied, and only the 60.Fl k , m , g , 61and 62.Fl h 63options are legal. 64.Pp 65If the 66.Fl M 67option is not specified, information is obtained from 68the currently running kernel via the 69.Xr sysctl 3 70interface. 71Otherwise, information is read from the specified core file, 72using the name list from the specified kernel image (or from 73the default image). 74.Pp 75The following options are available: 76.Bl -tag -width indent 77.It Fl n 78Print devices out by major/minor instead of name. 79.It Fl h 80.Dq Human-readable 81output. 82Use unit suffixes when printing swap partition sizes: 83Byte, Kilobyte, Megabyte, Gigabyte, Terabyte and Petabyte. 84.It Fl k 85Print sizes in kilobytes, regardless of the setting of the 86.Ev BLOCKSIZE 87environment variable. 88.It Fl m 89Print sizes in megabytes, regardless of the setting of the 90.Ev BLOCKSIZE 91environment variable. 92.It Fl g 93Print sizes in gigabytes, regardless of the setting of the 94.Ev BLOCKSIZE 95environment variable. 96.It Fl T 97Print the number of used and free slots in several system tables. 98This is useful for checking to see how large system tables have become 99if the system is under heavy load. 100.It Fl f 101Print the open file table with these headings: 102.Bl -tag -width indent 103.It LOC 104The core location of this table entry. 105.It TYPE 106The type of object the file table entry points to. 107.It FLG 108Miscellaneous state variables encoded thus: 109.Pp 110.Bl -tag -width indent -compact 111.It R 112open for reading 113.It W 114open for writing 115.It A 116open for appending 117.It I 118signal pgrp when data ready 119.El 120.It CNT 121Number of processes that know this open file. 122.It MSG 123Number of messages outstanding for this file. 124.It DATA 125The location of the vnode table entry or socket structure for this file. 126.It OFFSET 127The file offset (see 128.Xr lseek 2 ) . 129.El 130.It Fl s 131Print information about swap space usage on all the 132swap areas compiled into the kernel. 133The first column is the device name of the partition. 134The next column is 135the total space available in the partition. 136The 137.Ar Used 138column indicates the total blocks used so far; the 139.Ar Available 140column indicates how much space is remaining on each partition. 141The 142.Ar Capacity 143reports the percentage of space used. 144.Pp 145If more than one partition is configured into the system, totals for all 146of the statistics will be reported in the final line of the report. 147.It Fl t 148Print table for terminals 149with these headings: 150.Bl -tag -width indent 151.It LINE 152Device name. 153.It INQ 154Number of characters that can be stored in the input queue. 155.It CAN 156Number of characters in the input queue which can be read. 157.It LIN 158Number of characters in the input queue which cannot be read yet. 159.It LOW 160Low water mark for input. 161.It OUTQ 162Number of characters that can be stored in the output queue. 163.It USE 164Number of bytes in the output queue. 165.It LOW 166Low water mark for output. 167.It COL 168Calculated column position of terminal. 169.It SESS 170Process ID of the session leader. 171.It PGID 172Process group for which this is the controlling terminal. 173.It STATE 174Miscellaneous state variables encoded thus: 175.Pp 176.Bl -tag -width indent -compact 177.It I 178init/lock-state device nodes present 179.It C 180callout device nodes present 181.It O 182opened 183.It c 184console in use 185.It G 186gone 187.It B 188busy in 189.Xr open 2 190.It Y 191send SIGIO for input events 192.It L 193next character is literal 194.It H 195high watermark reached 196.It X 197open for exclusive use 198.It S 199output stopped (ixon flow control) 200.It l 201block mode input routine in use 202.It Z 203connection lost 204.It s 205i/o being snooped 206.It b 207busy in 208.Xr read 2 209or 210.Xr write 2 211.El 212.Pp 213The 214.Ql i 215and 216.Ql o 217characters refer to the previous character, to differentiate between 218input and output. 219.El 220.It Fl M 221Extract values associated with the name list from the specified core. 222.It Fl N 223If 224.Fl M 225is also specified, 226extract the name list from the specified system instead of the default, 227which is the kernel image the system has booted from. 228.El 229.Sh ENVIRONMENT 230.Bl -tag -width BLOCKSIZE 231.It Ev BLOCKSIZE 232If the environment variable 233.Ev BLOCKSIZE 234is set, and the 235.Fl h , k , 236or 237.Fl m 238options are not specified, the block counts will be displayed in units of 239that block size. 240If 241.Ev BLOCKSIZE 242is not set, and the 243.Fl h , k , 244or 245.Fl m 246options are not specified, the block counts will be displayed in 512-byte 247blocks. 248.El 249.Sh SEE ALSO 250.Xr ps 1 , 251.Xr systat 1 , 252.Xr stat 2 , 253.Xr fs 5 , 254.Xr iostat 8 , 255.Xr vmstat 8 256.Rs 257.%T UNIX Implementation 258.%A K. Thompson 259.Re 260.Sh HISTORY 261The 262.Nm 263utility appeared in 264.Bx 4.0 . 265.Sh BUGS 266Does not understand 267.Tn NFS 268swap servers. 269