Annotation of src/usr.bin/systat/systat.1, Revision 1.92
1.92 ! lum 1: .\" $OpenBSD: systat.1,v 1.91 2011/04/05 07:35:32 mpf Exp $
1.2 deraadt 2: .\" $NetBSD: systat.1,v 1.6 1996/05/10 23:16:39 thorpej Exp $
1.1 deraadt 3: .\"
4: .\" Copyright (c) 1985, 1990, 1993
5: .\" The Regents of the University of California. All rights reserved.
6: .\"
7: .\" Redistribution and use in source and binary forms, with or without
8: .\" modification, are permitted provided that the following conditions
9: .\" are met:
10: .\" 1. Redistributions of source code must retain the above copyright
11: .\" notice, this list of conditions and the following disclaimer.
12: .\" 2. Redistributions in binary form must reproduce the above copyright
13: .\" notice, this list of conditions and the following disclaimer in the
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1.28 millert 15: .\" 3. Neither the name of the University nor the names of its contributors
1.1 deraadt 16: .\" may be used to endorse or promote products derived from this software
17: .\" without specific prior written permission.
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31: .\" @(#)systat.1 8.2 (Berkeley) 12/30/93
32: .\"
1.92 ! lum 33: .Dd $Mdocdate: April 5 2011 $
1.1 deraadt 34: .Dt SYSTAT 1
1.12 aaron 35: .Os
1.1 deraadt 36: .Sh NAME
37: .Nm systat
1.41 jmc 38: .Nd display system statistics
1.1 deraadt 39: .Sh SYNOPSIS
40: .Nm systat
1.82 sobrado 41: .Op Fl abiNn
1.62 matthieu 42: .Op Fl d Ar count
43: .Op Fl s Ar delay
44: .Op Fl w Ar width
45: .Op Ar view
46: .Op Ar delay
1.1 deraadt 47: .Sh DESCRIPTION
1.13 aaron 48: .Nm
1.73 jmc 49: displays various system statistics in a screen-oriented fashion
50: using the
51: .Xr curses 3
52: screen display library.
1.1 deraadt 53: .Pp
54: While
1.13 aaron 55: .Nm
1.86 lum 56: is running, the screen is divided into different areas.
57: The top line displays the current number of users, the
58: three system load average figures over the last 1, 5, and
59: 15 minute intervals, and the system time.
1.73 jmc 60: The bottom line of the screen is reserved for
61: user input and error messages.
62: The information displayed in the rest of the screen
63: comprises a
64: .Em view ,
65: and is the main interface for
1.76 jmc 66: displaying different types of system statistics.
1.73 jmc 67: The
68: .Ic vmstat
69: view is the default.
1.77 jmc 70: .Pp
71: Certain information may be discarded when the screen size is
72: insufficient for display.
73: For example, on a machine with 10 drives the
74: .Ic iostat
75: bar graph displays only 3 drives on a 24 line terminal.
1.76 jmc 76: .\".Pp
77: .\"Input is interpreted at two different levels.
78: .\"A
79: .\".Dq global
80: .\"command interpreter processes all keyboard input.
81: .\"If this command interpreter fails to recognize a command, the
82: .\"input line is passed to a per-display command interpreter.
83: .\"This allows each display to have certain display-specific commands.
1.1 deraadt 84: .Pp
1.16 aaron 85: The options are as follows:
1.62 matthieu 86: .Bl -tag -width Ds
1.64 jmc 87: .It Fl a
1.62 matthieu 88: Display all lines.
89: .It Fl b
1.88 lum 90: Raw, non-interactive mode.
1.62 matthieu 91: .It Fl d Ar count
92: Exit after
93: .Ar count
94: screen updates.
95: .It Fl i
96: Interactive mode.
1.81 sthen 97: .It Fl N
98: Resolve network addresses to names.
99: This is the opposite of the
100: .Fl n
101: option.
1.34 itojun 102: .It Fl n
1.73 jmc 103: Do not try to reverse map IP addresses.
1.81 sthen 104: This is the default.
1.62 matthieu 105: .It Fl s Ar delay
1.31 jmc 106: Specifies the screen refresh time interval in seconds.
1.62 matthieu 107: This option is overridden by the final
1.64 jmc 108: .Ar delay
1.73 jmc 109: argument, if given.
1.31 jmc 110: The default interval is 5 seconds.
1.62 matthieu 111: .It Fl w Ar width
1.63 sobrado 112: Specifies the maximum width of the display.
1.62 matthieu 113: .\" XXX not sure for the above.
114: .It Ar view
1.1 deraadt 115: The
1.62 matthieu 116: .Ar view
1.2 deraadt 117: argument expects to be one of:
1.62 matthieu 118: .Ic vmstat ,
1.1 deraadt 119: .Ic pigs ,
1.62 matthieu 120: .Ic ifstat ,
1.1 deraadt 121: .Ic iostat ,
1.49 deraadt 122: .Ic sensors ,
1.1 deraadt 123: .Ic mbufs ,
1.62 matthieu 124: .Ic netstat ,
125: .Ic swap ,
126: .Ic states ,
127: .Ic rules ,
1.68 canacar 128: .Ic queues ,
1.71 canacar 129: .Ic pf ,
130: .Ic pool ,
131: .Ic malloc ,
1.80 jmc 132: .Ic buckets ,
133: .Ic nfsclient ,
1.1 deraadt 134: or
1.80 jmc 135: .Ic nfsserver .
1.2 deraadt 136: These displays can also be requested interactively and are described in
1.1 deraadt 137: full detail below.
1.62 matthieu 138: .Ar view
1.53 jmc 139: may be abbreviated to the minimum unambiguous prefix;
140: for example,
1.50 jmc 141: .Dq io
142: for
143: .Dq iostat .
1.62 matthieu 144: .It Ar delay
1.1 deraadt 145: The
1.62 matthieu 146: .Ar delay
1.73 jmc 147: argument specifies the screen refresh time interval in seconds.
148: This is provided for backwards compatibility, and overrides any
1.31 jmc 149: interval specified with the
1.73 jmc 150: .Fl s
1.2 deraadt 151: flag.
1.31 jmc 152: The default interval is 5 seconds.
1.1 deraadt 153: .El
154: .Pp
155: Certain characters cause immediate action by
1.61 jmc 156: .Nm .
1.63 sobrado 157: These are:
1.1 deraadt 158: .Bl -tag -width Fl
159: .It Ic \&:
160: Move the cursor to the command line and interpret the input
1.16 aaron 161: line typed as a command.
162: While entering a command the
1.1 deraadt 163: current character erase, word erase, and line kill characters
164: may be used.
1.69 canacar 165: .It Ic o
166: Select the next ordering which sorts the rows according to a
1.70 jmc 167: combination of columns.
168: Available orderings depend on the view.
169: Not all views support orderings.
1.66 canacar 170: .It Ic p
171: Pause
172: .Nm .
1.59 jmc 173: .It Ic q
1.73 jmc 174: Quit
1.66 canacar 175: .Nm .
1.69 canacar 176: .It Ic r
177: Reverse the selected ordering if supported by the view.
1.91 mpf 178: .It Ic \&,
179: Print numbers with thousand separators, where applicable.
1.66 canacar 180: .It Ic ^A \*(Ba Aq Ic Home
181: Jump to the beginning of the current view.
182: .It Ic ^B \*(Ba Aq Ic right arrow
1.84 jmc 183: Select the previous view.
1.66 canacar 184: .It Ic ^E \*(Ba Aq Ic End
185: Jump to the end of the current view.
186: .It Ic ^F \*(Ba Aq Ic left arrow
187: Select the next view.
188: .It Ic ^G
189: Print the name of the current
1.73 jmc 190: view being shown and the refresh interval.
1.66 canacar 191: .It Ic ^L
192: Refresh the screen.
193: .It Ic ^N \*(Ba Aq Ic down arrow
194: Scroll current view down by one line.
195: .It Ic ^P \*(Ba Aq Ic up arrow
196: Scroll current view up by one line.
197: .It Ic ^V \*(Ba Aq Ic Page Down
198: Scroll current view down by one page.
199: .It Ic Alt-V \*(Ba Aq Ic Page Up
200: Scroll current view up by one page.
201: .It Ic ^Z
202: Suspend
1.59 jmc 203: .Nm .
1.1 deraadt 204: .El
205: .Pp
1.13 aaron 206: The following commands are interpreted by the
207: .Dq global
1.1 deraadt 208: command interpreter.
209: .Bl -tag -width Fl
210: .It Ic help
1.73 jmc 211: Print the names of the available views on the command line.
1.52 jmc 212: .It Ic quit
1.73 jmc 213: Quit
1.61 jmc 214: .Nm .
1.52 jmc 215: (This may be abbreviated to
216: .Ic q . )
1.1 deraadt 217: .It Ic stop
218: Stop refreshing the screen.
219: .It Xo
220: .Op Ic start
221: .Op Ar number
222: .Xc
1.16 aaron 223: Start (continue) refreshing the screen.
224: If a second, numeric,
1.1 deraadt 225: argument is provided it is interpreted as a refresh interval
226: (in seconds).
227: Supplying only a number will set the refresh interval to this
228: value.
229: .El
230: .Pp
1.73 jmc 231: .Ar view
1.53 jmc 232: may be abbreviated to the minimum unambiguous prefix.
1.73 jmc 233: The available views are:
1.52 jmc 234: .Bl -tag -width "netstatXXX"
1.71 canacar 235: .It Ic buckets
236: Display kernel
237: .Xr malloc 9
238: bucket statistics similar to the output of
239: .Cm vmstat Fl m .
1.52 jmc 240: .It Ic ifstat
1.73 jmc 241: Display interface statistics.
1.52 jmc 242: The
243: .Dq State
244: column has the format
245: .Sm off
246: .Xo
247: .Cm up \*(Ba dn
248: .Bq : Cm U \*(Ba D .
249: .Xc
250: .Sm on
251: .Sq up
252: and
253: .Sq dn
254: represent whether the interface is up or down.
255: .Sq U
256: and
257: .Sq D
258: represent whether the interface is connected or not;
259: in the case of
260: .Xr carp 4
261: interfaces, whether the interface is in master or backup state, respectively.
1.92 ! lum 262: .Pp
1.91 mpf 263: The character
264: .Ic B
265: changes the counter view between bytes and bits.
1.92 ! lum 266: Pressing
! 267: .Ic b
! 268: displays statistics as calculated from boot time.
! 269: .Ic r
! 270: changes the counters to show their totals as calculated
! 271: between display refreshes.
! 272: .Ic t
! 273: changes the counters to show the average per second over
! 274: the display refresh interval;
! 275: this is the default.
1.52 jmc 276: .It Ic iostat
1.73 jmc 277: Display statistics about disk throughput.
1.52 jmc 278: Statistics
279: on disk throughput show, for each drive, data transferred in kilobytes,
280: number of disk transactions performed, and time spent in disk accesses
1.56 otto 281: (in fractions of a second).
1.71 canacar 282: .It Ic malloc
283: Display kernel
284: .Xr malloc 9
285: type statistics similar to the output of
286: .Cm vmstat Fl m .
287: Available orderings are:
288: .Ic name ,
289: .Ic inuse ,
290: .Ic memuse ,
291: and
292: .Ic requests .
1.72 jmc 293: .It Ic mbufs
1.78 canacar 294: Display mbuf usage information from kernel pools
295: and mbuf cluster pool statistics of each network interface.
1.52 jmc 296: .It Ic netstat
1.73 jmc 297: Display network connections.
1.52 jmc 298: By default, network servers awaiting requests are not displayed.
299: Each address
300: is displayed in the format
1.76 jmc 301: .Dq host:port ,
1.52 jmc 302: with each shown symbolically, when possible.
1.76 jmc 303: .\"It is possible to have addresses displayed numerically,
304: .\"limit the display to a set of ports, hosts, and/or protocols
305: .\"(the minimum unambiguous prefix may be supplied):
306: .\".Bl -tag -width Ar
307: .\".It Cm all
308: .\"Toggle the displaying of server processes awaiting requests (this
309: .\"is the equivalent of the
310: .\".Fl a
311: .\"flag to
312: .\".Xr netstat 1 ) .
313: .\".It Cm display Op Ar items
314: .\"Display information about the connections associated with the
315: .\"specified hosts or ports.
316: .\"As for
317: .\".Ar ignore ,
318: .\".Ar items
319: .\"may be names or numbers.
320: .\".It Cm ignore Op Ar items
321: .\"Do not display information about connections associated with
322: .\"the specified hosts or ports.
323: .\"Hosts and ports may be specified
324: .\"by name
325: .\".Pf ( Dq vangogh ,
326: .\".Dq ftp ) ,
327: .\"or numerically.
328: .\"Host addresses
329: .\"use the Internet dot notation
330: .\".Pq Dq 128.32.0.9 .
331: .\"Multiple items
332: .\"may be specified with a single command by separating them with
333: .\"spaces.
334: .\".It Cm names
335: .\"Display network addresses symbolically.
336: .\".It Cm numbers
337: .\"Display network addresses numerically.
338: .\".It Cm reset
339: .\"Reset the port, host, and protocol matching mechanisms to the default
340: .\"(any protocol, port, or host).
341: .\".It Cm show Oo
342: .\".Ar protocols \*(Ba ports \*(Ba hosts
343: .\".Oc
344: .\"Show, on the command line, the currently selected protocols,
345: .\"hosts, and ports.
346: .\"Protocols, hosts and ports which are being ignored are prefixed with a
347: .\".Ql \&! .
348: .\"If an argument is supplied to
349: .\".Cm show ,
350: .\"then only the requested information will be displayed.
351: .\".It Cm tcp \*(Ba udp \*(Ba all
352: .\"Display only network connections using the indicated protocol.
353: .\".El
1.79 jasper 354: .It Ic nfsclient
1.80 jmc 355: Display statistics about NFS client activity.
1.84 jmc 356: Output resembles
1.79 jasper 357: .Cm nfsstat Fl c .
358: .It Ic nfsserver
1.80 jmc 359: Display statistics about NFS server activity.
1.84 jmc 360: Output resembles
1.79 jasper 361: .Cm nfsstat Fl s .
1.62 matthieu 362: .It Ic pf
1.64 jmc 363: Display filter information about
1.62 matthieu 364: .Xr pf 4 ,
365: similar to the output of
1.64 jmc 366: .Cm pfctl Fl s Cm info
1.62 matthieu 367: option.
1.1 deraadt 368: .It Ic pigs
1.73 jmc 369: Display those processes resident in main
1.1 deraadt 370: memory and getting the
1.73 jmc 371: largest portion of the processor.
1.1 deraadt 372: When less than 100% of the
373: processor is scheduled to user processes, the remaining time
1.13 aaron 374: is accounted to the
375: .Dq idle
376: process.
1.68 canacar 377: .It Ic pool
378: Display kernel
379: .Xr pool 9
380: statistics similar to the output of
381: .Cm vmstat Fl m .
1.69 canacar 382: Available orderings are:
1.75 canacar 383: .Ic name ,
384: .Ic requests ,
1.76 jmc 385: .Ic size ,
1.69 canacar 386: and
1.75 canacar 387: .Ic number of pages .
1.62 matthieu 388: .It Ic queues
1.64 jmc 389: Display statistics about the active
390: .Xr altq 9
391: queues, similar to the output of
1.62 matthieu 392: .Cm pfctl Fl s Cm queue .
393: .It Ic rules
1.64 jmc 394: Display pf rules statistics, similar to the output of
1.62 matthieu 395: .Cm pfctl Fl s Cm rules .
1.52 jmc 396: .It Ic sensors
1.73 jmc 397: Display the current values of available hardware sensors,
1.52 jmc 398: in a format similar to that of
399: .Xr sysctl 8 .
1.62 matthieu 400: .It Ic states
1.64 jmc 401: Display pf states statistics, similar to the output of
1.62 matthieu 402: .Cm pfctl Fl s Cm states .
1.69 canacar 403: Available orderings are:
404: .Ic none ,
405: .Ic bytes ,
406: .Ic expiry ,
407: .Ic packets ,
408: .Ic age ,
409: .Ic source address ,
410: .Ic source port ,
411: .Ic destination address ,
412: .Ic destination port ,
413: .Ic rate ,
414: and
415: .Ic peak
416: columns.
1.1 deraadt 417: .It Ic swap
1.12 aaron 418: Show information about swap space usage on all the
1.1 deraadt 419: swap areas compiled into the kernel.
420: The first column is the device name of the partition.
421: The next column is the total space available in the partition.
1.12 aaron 422: The
1.1 deraadt 423: .Ar Used
424: column indicates the total blocks used so far;
425: the graph shows the percentage of space in use on each partition.
1.8 aaron 426: If there is more than one swap partition in use,
1.1 deraadt 427: a total line is also shown.
1.8 aaron 428: Areas known to the kernel but not in use are shown as not available.
1.1 deraadt 429: .It Ic vmstat
430: Take over the entire display and show a (rather crowded) compendium
431: of statistics related to virtual memory usage, process scheduling,
1.84 jmc 432: device interrupts, system name translation caching, disk I/O, etc.
1.73 jmc 433: This view is the default.
1.1 deraadt 434: .Pp
1.86 lum 435: Below the top line are statistics on memory utilization.
1.1 deraadt 436: The first row of the table reports memory usage only among
1.8 aaron 437: active processes, that is, processes that have run in the previous
1.1 deraadt 438: twenty seconds.
439: The second row reports on memory usage of all processes.
1.47 millert 440: The first column reports on the amount of physical memory
1.1 deraadt 441: claimed by processes.
1.29 jmc 442: The second column reports the same figure for
1.47 millert 443: virtual memory, that is, the amount of memory that would be
444: needed if all processes were resident at the same time.
445: Finally, the last column shows the amount of physical memory
1.1 deraadt 446: on the free list.
447: .Pp
1.5 flipk 448: Below the memory display is a list of the average number of processes
1.13 aaron 449: (over the last refresh interval) that are runnable
450: .Pq Sq r ,
451: in disk wait other than paging
452: .Pq Sq d ,
453: sleeping
454: .Pq Sq s ,
455: and swapped out but desiring to run
456: .Pq Sq w .
1.1 deraadt 457: Below the queue length listing is a numerical listing and
458: a bar graph showing the amount of
1.40 dlg 459: interrupt (shown as
1.63 sobrado 460: .Ql \*(Ba ) ,
1.16 aaron 461: system (shown as
462: .Ql = ) ,
463: user (shown as
1.43 jmc 464: .Ql \*(Gt ) ,
1.16 aaron 465: nice (shown as
466: .Ql - ) ,
467: and idle time (shown as
1.29 jmc 468: .Ql \ \& ) .
1.1 deraadt 469: .Pp
1.12 aaron 470: To the right of the Proc display are statistics about
1.16 aaron 471: Context switches
472: .Pq Dq Csw ,
473: Traps
474: .Pq Dq Trp ,
475: Syscalls
476: .Pq Dq Sys ,
477: Interrupts
478: .Pq Dq Int ,
479: Soft interrupts
480: .Pq Dq Sof ,
481: and Faults
482: .Pq Dq Flt
1.7 deraadt 483: which have occurred during the last refresh interval.
1.5 flipk 484: .Pp
1.83 jmc 485: Below the CPU usage graph are statistics on name translations.
1.1 deraadt 486: It lists the number of names translated in the previous interval,
487: the number and percentage of the translations that were
488: handled by the system wide name translation cache, and
489: the number and percentage of the translations that were
490: handled by the per process name translation cache.
491: .Pp
1.5 flipk 492: At the bottom left is the disk usage display.
493: It reports the number of seeks, transfers, number
494: of kilobyte blocks transferred per second averaged over the
1.90 lum 495: refresh period of the display, and
1.5 flipk 496: the time spent in disk accesses.
497: .Pp
1.1 deraadt 498: Under the date in the upper right hand quadrant are statistics
499: on paging and swapping activity.
500: The first two columns report the average number of pages
501: brought in and out per second over the last refresh interval
502: due to page faults and the paging daemon.
503: The third and fourth columns report the average number of pages
504: brought in and out per second over the last refresh interval
505: due to swap requests initiated by the scheduler.
506: The first row of the display shows the average
1.8 aaron 507: number of disk transfers per second over the last refresh interval.
508: The second row of the display shows the average
1.1 deraadt 509: number of pages transferred per second over the last refresh interval.
510: .Pp
511: Running down the right hand side of the display is a breakdown
512: of the interrupts being handled by the system.
513: At the top of the list is the total interrupts per second
514: over the time interval.
515: The rest of the column breaks down the total on a device
516: by device basis.
517: Only devices that have interrupted at least once since boot time are shown.
1.83 jmc 518: .Pp
1.89 lum 519: Below the Interrupts display are
520: the average number of input and output packets per second
521: for all interfaces over the last refresh interval.
1.5 flipk 522: .Pp
523: Below the SWAPPING display and slightly to the left of the Interrupts
1.18 aaron 524: display is a list of virtual memory statistics.
525: The abbreviations are:
1.36 jmc 526: .Pp
1.38 niallo 527: .Bl -tag -compact -width "kmapentXX" -offset indent
1.21 deraadt 528: .It forks
529: process forks
530: .It fkppw
531: forks where parent waits
532: .It fksvm
533: forks where vmspace is shared
534: .It pwait
535: fault had to wait on a page
536: .It relck
537: fault relock called
538: .It rlkok
539: fault relock is successful
540: .It noram
541: faults out of ram
542: .It ndcpy
543: number of times fault clears "need copy"
544: .It fltcp
545: number of times fault promotes with copy
546: .It zfod
547: fault promotes with zerofill
1.5 flipk 548: .It cow
1.21 deraadt 549: number of times fault anon cow
550: .It fmin
551: min number of free pages
552: .It ftarg
553: target number of free pages
554: .It itarg
555: target number of inactive pages
556: .It wired
557: wired pages
1.25 deraadt 558: .It pdfre
1.21 deraadt 559: pages daemon freed since boot
560: .It pdscn
561: pages daemon scanned since boot
1.38 niallo 562: .It pzidle
563: number of zeroed pages
564: .It kmapent
565: number of kernel map entries
1.5 flipk 566: .El
567: .Pp
1.13 aaron 568: The
569: .Ql %zfod
570: value is more interesting when observed over a long
1.76 jmc 571: period, such as from boot time.
572: .\"(see the
573: .\".Cm boot
574: .\"option below).
1.35 markus 575: .El
1.74 jmc 576: .\".Pp
577: .\"The following commands are specific to the
578: .\".Ic vmstat
579: .\"and
580: .\".Ic ifstat
581: .\"views; the minimum unambiguous prefix may be supplied.
582: .\".Pp
583: .\".Bl -tag -width Ds -compact
584: .\".It Cm boot
585: .\"Display cumulative statistics since the system was booted.
586: .\".It Cm run
587: .\"Display statistics as a running total from the point this
588: .\"command is given.
589: .\".It Cm time
590: .\"Display statistics averaged over the refresh interval (the default).
591: .\".It Cm zero
592: .\"Reset running statistics to zero.
593: .\".El
594: .\".Pp
595: .\"The following commands are common to each view which shows
596: .\"information about disk drives.
597: .\"These commands are used to select a set of drives to report on,
598: .\"should a system have more drives configured
599: .\"than can normally be displayed on the screen.
600: .\".Pp
601: .\".Bl -tag -width Tx -compact
602: .\".It Cm display Op Ar drives
603: .\"Display information about the drives indicated.
604: .\"Multiple drives may be specified, separated by spaces.
605: .\".It Cm ignore Op Ar drives
606: .\"Do not display information about the drives indicated.
607: .\"Multiple drives may be specified, separated by spaces.
608: .\".El
1.1 deraadt 609: .Sh FILES
1.73 jmc 610: .Bl -tag -width "/etc/networksXXX" -compact
1.1 deraadt 611: .It Pa /etc/hosts
1.73 jmc 612: Host names.
1.1 deraadt 613: .It Pa /etc/networks
1.73 jmc 614: Network names.
1.62 matthieu 615: .It Pa /etc/pf.conf
1.73 jmc 616: .Xr pf 4
617: configuration.
1.1 deraadt 618: .It Pa /etc/services
1.73 jmc 619: Port names.
1.1 deraadt 620: .El
1.15 aaron 621: .Sh SEE ALSO
1.85 jmc 622: .Xr fstat 1 ,
1.15 aaron 623: .Xr kill 1 ,
1.37 jmc 624: .Xr netstat 1 ,
1.79 jasper 625: .Xr nfsstat 1 ,
1.15 aaron 626: .Xr ps 1 ,
627: .Xr top 1 ,
1.37 jmc 628: .Xr iostat 8 ,
1.62 matthieu 629: .Xr pfctl 8 ,
1.37 jmc 630: .Xr pstat 8 ,
631: .Xr renice 8 ,
1.48 deanna 632: .Xr sysctl 8 ,
1.37 jmc 633: .Xr vmstat 8
1.1 deraadt 634: .Sh HISTORY
635: The
1.13 aaron 636: .Nm
1.73 jmc 637: program first appeared in
1.1 deraadt 638: .Bx 4.3 .
639: .Sh BUGS
640: Certain displays presume a minimum of 80 characters per line.
641: The
642: .Ic vmstat
643: display looks out of place because it is (it was added in as
644: a separate display rather than created as a new program).
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