Annotation of src/usr.bin/systat/systat.1, Revision 1.79
1.79 ! jasper 1: .\" $OpenBSD: systat.1,v 1.78 2008/12/17 08:21:43 canacar 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
14: .\" documentation and/or other materials provided with the distribution.
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.
18: .\"
19: .\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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31: .\" @(#)systat.1 8.2 (Berkeley) 12/30/93
32: .\"
1.79 ! jasper 33: .Dd $Mdocdate: December 17 2008 $
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
1.62 matthieu 41: .Op Fl abin
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
1.73 jmc 56: is running, the screen is divided into differing areas.
57: The top line depicts the current system load average.
58: The bottom line of the screen is reserved for
59: user input and error messages.
60: The information displayed in the rest of the screen
61: comprises a
62: .Em view ,
63: and is the main interface for
1.76 jmc 64: displaying different types of system statistics.
1.73 jmc 65: The
66: .Ic vmstat
67: view is the default.
1.77 jmc 68: .Pp
69: Certain information may be discarded when the screen size is
70: insufficient for display.
71: For example, on a machine with 10 drives the
72: .Ic iostat
73: bar graph displays only 3 drives on a 24 line terminal.
74: When a bar graph would overflow the allotted screen space it is
75: truncated and the actual value is printed
76: .Dq over top
77: of the bar.
1.76 jmc 78: .\".Pp
79: .\"Input is interpreted at two different levels.
80: .\"A
81: .\".Dq global
82: .\"command interpreter processes all keyboard input.
83: .\"If this command interpreter fails to recognize a command, the
84: .\"input line is passed to a per-display command interpreter.
85: .\"This allows each display to have certain display-specific commands.
1.1 deraadt 86: .Pp
1.16 aaron 87: The options are as follows:
1.62 matthieu 88: .Bl -tag -width Ds
1.64 jmc 89: .It Fl a
1.62 matthieu 90: Display all lines.
91: .It Fl b
1.64 jmc 92: Raw, non interactive mode.
1.62 matthieu 93: .It Fl d Ar count
94: Exit after
95: .Ar count
96: screen updates.
97: .It Fl i
98: Interactive mode.
1.34 itojun 99: .It Fl n
1.73 jmc 100: Do not try to reverse map IP addresses.
1.62 matthieu 101: .It Fl s Ar delay
1.31 jmc 102: Specifies the screen refresh time interval in seconds.
1.62 matthieu 103: This option is overridden by the final
1.64 jmc 104: .Ar delay
1.73 jmc 105: argument, if given.
1.31 jmc 106: The default interval is 5 seconds.
1.62 matthieu 107: .It Fl w Ar width
1.63 sobrado 108: Specifies the maximum width of the display.
1.62 matthieu 109: .\" XXX not sure for the above.
110: .It Ar view
1.1 deraadt 111: The
1.62 matthieu 112: .Ar view
1.2 deraadt 113: argument expects to be one of:
1.62 matthieu 114: .Ic vmstat ,
1.1 deraadt 115: .Ic pigs ,
1.62 matthieu 116: .Ic ifstat ,
1.1 deraadt 117: .Ic iostat ,
1.49 deraadt 118: .Ic sensors ,
1.1 deraadt 119: .Ic mbufs ,
1.62 matthieu 120: .Ic netstat ,
1.79 ! jasper 121: .Ic nfsclient ,
! 122: .Ic nfsserver ,
1.62 matthieu 123: .Ic swap ,
124: .Ic states ,
125: .Ic rules ,
1.68 canacar 126: .Ic queues ,
1.71 canacar 127: .Ic pf ,
128: .Ic pool ,
129: .Ic malloc ,
1.1 deraadt 130: or
1.71 canacar 131: .Ic buckets .
1.2 deraadt 132: These displays can also be requested interactively and are described in
1.1 deraadt 133: full detail below.
1.62 matthieu 134: .Ar view
1.53 jmc 135: may be abbreviated to the minimum unambiguous prefix;
136: for example,
1.50 jmc 137: .Dq io
138: for
139: .Dq iostat .
1.62 matthieu 140: .It Ar delay
1.1 deraadt 141: The
1.62 matthieu 142: .Ar delay
1.73 jmc 143: argument specifies the screen refresh time interval in seconds.
144: This is provided for backwards compatibility, and overrides any
1.31 jmc 145: interval specified with the
1.73 jmc 146: .Fl s
1.2 deraadt 147: flag.
1.31 jmc 148: The default interval is 5 seconds.
1.1 deraadt 149: .El
150: .Pp
151: Certain characters cause immediate action by
1.61 jmc 152: .Nm .
1.63 sobrado 153: These are:
1.1 deraadt 154: .Bl -tag -width Fl
155: .It Ic \&:
156: Move the cursor to the command line and interpret the input
1.16 aaron 157: line typed as a command.
158: While entering a command the
1.1 deraadt 159: current character erase, word erase, and line kill characters
160: may be used.
1.69 canacar 161: .It Ic o
162: Select the next ordering which sorts the rows according to a
1.70 jmc 163: combination of columns.
164: Available orderings depend on the view.
165: Not all views support orderings.
1.66 canacar 166: .It Ic p
167: Pause
168: .Nm .
1.59 jmc 169: .It Ic q
1.73 jmc 170: Quit
1.66 canacar 171: .Nm .
1.69 canacar 172: .It Ic r
173: Reverse the selected ordering if supported by the view.
1.66 canacar 174: .It Ic ^A \*(Ba Aq Ic Home
175: Jump to the beginning of the current view.
176: .It Ic ^B \*(Ba Aq Ic right arrow
177: Select previous view.
178: .It Ic ^E \*(Ba Aq Ic End
179: Jump to the end of the current view.
180: .It Ic ^F \*(Ba Aq Ic left arrow
181: Select the next view.
182: .It Ic ^G
183: Print the name of the current
1.73 jmc 184: view being shown and the refresh interval.
1.66 canacar 185: .It Ic ^L
186: Refresh the screen.
187: .It Ic ^N \*(Ba Aq Ic down arrow
188: Scroll current view down by one line.
189: .It Ic ^P \*(Ba Aq Ic up arrow
190: Scroll current view up by one line.
191: .It Ic ^V \*(Ba Aq Ic Page Down
192: Scroll current view down by one page.
193: .It Ic Alt-V \*(Ba Aq Ic Page Up
194: Scroll current view up by one page.
195: .It Ic ^Z
196: Suspend
1.59 jmc 197: .Nm .
1.1 deraadt 198: .El
199: .Pp
1.13 aaron 200: The following commands are interpreted by the
201: .Dq global
1.1 deraadt 202: command interpreter.
203: .Bl -tag -width Fl
204: .It Ic help
1.73 jmc 205: Print the names of the available views on the command line.
1.52 jmc 206: .It Ic quit
1.73 jmc 207: Quit
1.61 jmc 208: .Nm .
1.52 jmc 209: (This may be abbreviated to
210: .Ic q . )
1.1 deraadt 211: .It Ic stop
212: Stop refreshing the screen.
213: .It Xo
214: .Op Ic start
215: .Op Ar number
216: .Xc
1.16 aaron 217: Start (continue) refreshing the screen.
218: If a second, numeric,
1.1 deraadt 219: argument is provided it is interpreted as a refresh interval
220: (in seconds).
221: Supplying only a number will set the refresh interval to this
222: value.
223: .El
224: .Pp
1.73 jmc 225: .Ar view
1.53 jmc 226: may be abbreviated to the minimum unambiguous prefix.
1.73 jmc 227: The available views are:
1.52 jmc 228: .Bl -tag -width "netstatXXX"
1.71 canacar 229: .It Ic buckets
230: Display kernel
231: .Xr malloc 9
232: bucket statistics similar to the output of
233: .Cm vmstat Fl m .
1.52 jmc 234: .It Ic ifstat
1.73 jmc 235: Display interface statistics.
1.52 jmc 236: The
237: .Dq State
238: column has the format
239: .Sm off
240: .Xo
241: .Cm up \*(Ba dn
242: .Bq : Cm U \*(Ba D .
243: .Xc
244: .Sm on
245: .Sq up
246: and
247: .Sq dn
248: represent whether the interface is up or down.
249: .Sq U
250: and
251: .Sq D
252: represent whether the interface is connected or not;
253: in the case of
254: .Xr carp 4
255: interfaces, whether the interface is in master or backup state, respectively.
1.76 jmc 256: .\"See below for more options.
1.52 jmc 257: .It Ic iostat
1.73 jmc 258: Display statistics about disk throughput.
1.52 jmc 259: Statistics
260: on disk throughput show, for each drive, data transferred in kilobytes,
261: number of disk transactions performed, and time spent in disk accesses
1.56 otto 262: (in fractions of a second).
1.71 canacar 263: .It Ic malloc
264: Display kernel
265: .Xr malloc 9
266: type statistics similar to the output of
267: .Cm vmstat Fl m .
268: Available orderings are:
269: .Ic name ,
270: .Ic inuse ,
271: .Ic memuse ,
272: and
273: .Ic requests .
1.72 jmc 274: .It Ic mbufs
1.78 canacar 275: Display mbuf usage information from kernel pools
276: and mbuf cluster pool statistics of each network interface.
1.52 jmc 277: .It Ic netstat
1.73 jmc 278: Display network connections.
1.52 jmc 279: By default, network servers awaiting requests are not displayed.
280: Each address
281: is displayed in the format
1.76 jmc 282: .Dq host:port ,
1.52 jmc 283: with each shown symbolically, when possible.
1.76 jmc 284: .\"It is possible to have addresses displayed numerically,
285: .\"limit the display to a set of ports, hosts, and/or protocols
286: .\"(the minimum unambiguous prefix may be supplied):
287: .\".Bl -tag -width Ar
288: .\".It Cm all
289: .\"Toggle the displaying of server processes awaiting requests (this
290: .\"is the equivalent of the
291: .\".Fl a
292: .\"flag to
293: .\".Xr netstat 1 ) .
294: .\".It Cm display Op Ar items
295: .\"Display information about the connections associated with the
296: .\"specified hosts or ports.
297: .\"As for
298: .\".Ar ignore ,
299: .\".Ar items
300: .\"may be names or numbers.
301: .\".It Cm ignore Op Ar items
302: .\"Do not display information about connections associated with
303: .\"the specified hosts or ports.
304: .\"Hosts and ports may be specified
305: .\"by name
306: .\".Pf ( Dq vangogh ,
307: .\".Dq ftp ) ,
308: .\"or numerically.
309: .\"Host addresses
310: .\"use the Internet dot notation
311: .\".Pq Dq 128.32.0.9 .
312: .\"Multiple items
313: .\"may be specified with a single command by separating them with
314: .\"spaces.
315: .\".It Cm names
316: .\"Display network addresses symbolically.
317: .\".It Cm numbers
318: .\"Display network addresses numerically.
319: .\".It Cm reset
320: .\"Reset the port, host, and protocol matching mechanisms to the default
321: .\"(any protocol, port, or host).
322: .\".It Cm show Oo
323: .\".Ar protocols \*(Ba ports \*(Ba hosts
324: .\".Oc
325: .\"Show, on the command line, the currently selected protocols,
326: .\"hosts, and ports.
327: .\"Protocols, hosts and ports which are being ignored are prefixed with a
328: .\".Ql \&! .
329: .\"If an argument is supplied to
330: .\".Cm show ,
331: .\"then only the requested information will be displayed.
332: .\".It Cm tcp \*(Ba udp \*(Ba all
333: .\"Display only network connections using the indicated protocol.
334: .\".El
1.79 ! jasper 335: .It Ic nfsclient
! 336: Display statistics about the NFS client activity.
! 337: Output ressembles
! 338: .Cm nfsstat Fl c .
! 339: .It Ic nfsserver
! 340: Display statistics about the NFS server activity.
! 341: Ooutput ressembles
! 342: .Cm nfsstat Fl s .
1.62 matthieu 343: .It Ic pf
1.64 jmc 344: Display filter information about
1.62 matthieu 345: .Xr pf 4 ,
346: similar to the output of
1.64 jmc 347: .Cm pfctl Fl s Cm info
1.62 matthieu 348: option.
1.1 deraadt 349: .It Ic pigs
1.73 jmc 350: Display those processes resident in main
1.1 deraadt 351: memory and getting the
1.73 jmc 352: largest portion of the processor.
1.1 deraadt 353: When less than 100% of the
354: processor is scheduled to user processes, the remaining time
1.13 aaron 355: is accounted to the
356: .Dq idle
357: process.
1.68 canacar 358: .It Ic pool
359: Display kernel
360: .Xr pool 9
361: statistics similar to the output of
362: .Cm vmstat Fl m .
1.69 canacar 363: Available orderings are:
1.75 canacar 364: .Ic name ,
365: .Ic requests ,
1.76 jmc 366: .Ic size ,
1.69 canacar 367: and
1.75 canacar 368: .Ic number of pages .
1.62 matthieu 369: .It Ic queues
1.64 jmc 370: Display statistics about the active
371: .Xr altq 9
372: queues, similar to the output of
1.62 matthieu 373: .Cm pfctl Fl s Cm queue .
374: .It Ic rules
1.64 jmc 375: Display pf rules statistics, similar to the output of
1.62 matthieu 376: .Cm pfctl Fl s Cm rules .
1.52 jmc 377: .It Ic sensors
1.73 jmc 378: Display the current values of available hardware sensors,
1.52 jmc 379: in a format similar to that of
380: .Xr sysctl 8 .
1.62 matthieu 381: .It Ic states
1.64 jmc 382: Display pf states statistics, similar to the output of
1.62 matthieu 383: .Cm pfctl Fl s Cm states .
1.69 canacar 384: Available orderings are:
385: .Ic none ,
386: .Ic bytes ,
387: .Ic expiry ,
388: .Ic packets ,
389: .Ic age ,
390: .Ic source address ,
391: .Ic source port ,
392: .Ic destination address ,
393: .Ic destination port ,
394: .Ic rate ,
395: and
396: .Ic peak
397: columns.
1.1 deraadt 398: .It Ic swap
1.12 aaron 399: Show information about swap space usage on all the
1.1 deraadt 400: swap areas compiled into the kernel.
401: The first column is the device name of the partition.
402: The next column is the total space available in the partition.
1.12 aaron 403: The
1.1 deraadt 404: .Ar Used
405: column indicates the total blocks used so far;
406: the graph shows the percentage of space in use on each partition.
1.8 aaron 407: If there is more than one swap partition in use,
1.1 deraadt 408: a total line is also shown.
1.8 aaron 409: Areas known to the kernel but not in use are shown as not available.
1.1 deraadt 410: .It Ic vmstat
411: Take over the entire display and show a (rather crowded) compendium
412: of statistics related to virtual memory usage, process scheduling,
1.60 jmc 413: device interrupts, system name translation caching, disk I/O etc.
1.73 jmc 414: This view is the default.
1.1 deraadt 415: .Pp
416: The upper left quadrant of the screen shows the number
1.8 aaron 417: of users logged in and the load average over the last 1, 5,
418: and 15 minute intervals.
1.1 deraadt 419: Below this line are statistics on memory utilization.
420: The first row of the table reports memory usage only among
1.8 aaron 421: active processes, that is, processes that have run in the previous
1.1 deraadt 422: twenty seconds.
423: The second row reports on memory usage of all processes.
1.47 millert 424: The first column reports on the amount of physical memory
1.1 deraadt 425: claimed by processes.
1.29 jmc 426: The second column reports the same figure for
1.47 millert 427: virtual memory, that is, the amount of memory that would be
428: needed if all processes were resident at the same time.
429: Finally, the last column shows the amount of physical memory
1.1 deraadt 430: on the free list.
431: .Pp
1.5 flipk 432: Below the memory display is a list of the average number of processes
1.13 aaron 433: (over the last refresh interval) that are runnable
434: .Pq Sq r ,
435: in disk wait other than paging
436: .Pq Sq d ,
437: sleeping
438: .Pq Sq s ,
439: and swapped out but desiring to run
440: .Pq Sq w .
1.1 deraadt 441: Below the queue length listing is a numerical listing and
442: a bar graph showing the amount of
1.40 dlg 443: interrupt (shown as
1.63 sobrado 444: .Ql \*(Ba ) ,
1.16 aaron 445: system (shown as
446: .Ql = ) ,
447: user (shown as
1.43 jmc 448: .Ql \*(Gt ) ,
1.16 aaron 449: nice (shown as
450: .Ql - ) ,
451: and idle time (shown as
1.29 jmc 452: .Ql \ \& ) .
1.1 deraadt 453: .Pp
1.12 aaron 454: To the right of the Proc display are statistics about
1.16 aaron 455: Context switches
456: .Pq Dq Csw ,
457: Traps
458: .Pq Dq Trp ,
459: Syscalls
460: .Pq Dq Sys ,
461: Interrupts
462: .Pq Dq Int ,
463: Soft interrupts
464: .Pq Dq Sof ,
465: and Faults
466: .Pq Dq Flt
1.7 deraadt 467: which have occurred during the last refresh interval.
1.5 flipk 468: .Pp
469: Below the CPU Usage graph are statistics on name translations.
1.1 deraadt 470: It lists the number of names translated in the previous interval,
471: the number and percentage of the translations that were
472: handled by the system wide name translation cache, and
473: the number and percentage of the translations that were
474: handled by the per process name translation cache.
475: .Pp
1.5 flipk 476: At the bottom left is the disk usage display.
477: It reports the number of seeks, transfers, number
478: of kilobyte blocks transferred per second averaged over the
479: refresh period of the display (by default, five seconds), and
480: the time spent in disk accesses.
481: .Pp
1.1 deraadt 482: Under the date in the upper right hand quadrant are statistics
483: on paging and swapping activity.
484: The first two columns report the average number of pages
485: brought in and out per second over the last refresh interval
486: due to page faults and the paging daemon.
487: The third and fourth columns report the average number of pages
488: brought in and out per second over the last refresh interval
489: due to swap requests initiated by the scheduler.
490: The first row of the display shows the average
1.8 aaron 491: number of disk transfers per second over the last refresh interval.
492: The second row of the display shows the average
1.1 deraadt 493: number of pages transferred per second over the last refresh interval.
494: .Pp
495: Running down the right hand side of the display is a breakdown
496: of the interrupts being handled by the system.
497: At the top of the list is the total interrupts per second
498: over the time interval.
499: The rest of the column breaks down the total on a device
500: by device basis.
501: Only devices that have interrupted at least once since boot time are shown.
1.5 flipk 502: .Pp
503: Below the SWAPPING display and slightly to the left of the Interrupts
1.18 aaron 504: display is a list of virtual memory statistics.
505: The abbreviations are:
1.36 jmc 506: .Pp
1.38 niallo 507: .Bl -tag -compact -width "kmapentXX" -offset indent
1.21 deraadt 508: .It forks
509: process forks
510: .It fkppw
511: forks where parent waits
512: .It fksvm
513: forks where vmspace is shared
514: .It pwait
515: fault had to wait on a page
516: .It relck
517: fault relock called
518: .It rlkok
519: fault relock is successful
520: .It noram
521: faults out of ram
522: .It ndcpy
523: number of times fault clears "need copy"
524: .It fltcp
525: number of times fault promotes with copy
526: .It zfod
527: fault promotes with zerofill
1.5 flipk 528: .It cow
1.21 deraadt 529: number of times fault anon cow
530: .It fmin
531: min number of free pages
532: .It ftarg
533: target number of free pages
534: .It itarg
535: target number of inactive pages
536: .It wired
537: wired pages
1.25 deraadt 538: .It pdfre
1.21 deraadt 539: pages daemon freed since boot
540: .It pdscn
541: pages daemon scanned since boot
1.38 niallo 542: .It pzidle
543: number of zeroed pages
544: .It kmapent
545: number of kernel map entries
1.5 flipk 546: .El
547: .Pp
1.13 aaron 548: The
549: .Ql %zfod
550: value is more interesting when observed over a long
1.76 jmc 551: period, such as from boot time.
552: .\"(see the
553: .\".Cm boot
554: .\"option below).
1.35 markus 555: .El
1.74 jmc 556: .\".Pp
557: .\"The following commands are specific to the
558: .\".Ic vmstat
559: .\"and
560: .\".Ic ifstat
561: .\"views; the minimum unambiguous prefix may be supplied.
562: .\".Pp
563: .\".Bl -tag -width Ds -compact
564: .\".It Cm boot
565: .\"Display cumulative statistics since the system was booted.
566: .\".It Cm run
567: .\"Display statistics as a running total from the point this
568: .\"command is given.
569: .\".It Cm time
570: .\"Display statistics averaged over the refresh interval (the default).
571: .\".It Cm zero
572: .\"Reset running statistics to zero.
573: .\".El
574: .\".Pp
575: .\"The following commands are common to each view which shows
576: .\"information about disk drives.
577: .\"These commands are used to select a set of drives to report on,
578: .\"should a system have more drives configured
579: .\"than can normally be displayed on the screen.
580: .\".Pp
581: .\".Bl -tag -width Tx -compact
582: .\".It Cm display Op Ar drives
583: .\"Display information about the drives indicated.
584: .\"Multiple drives may be specified, separated by spaces.
585: .\".It Cm ignore Op Ar drives
586: .\"Do not display information about the drives indicated.
587: .\"Multiple drives may be specified, separated by spaces.
588: .\".El
1.1 deraadt 589: .Sh FILES
1.73 jmc 590: .Bl -tag -width "/etc/networksXXX" -compact
1.1 deraadt 591: .It Pa /etc/hosts
1.73 jmc 592: Host names.
1.1 deraadt 593: .It Pa /etc/networks
1.73 jmc 594: Network names.
1.62 matthieu 595: .It Pa /etc/pf.conf
1.73 jmc 596: .Xr pf 4
597: configuration.
1.1 deraadt 598: .It Pa /etc/services
1.73 jmc 599: Port names.
1.1 deraadt 600: .El
1.15 aaron 601: .Sh SEE ALSO
1.37 jmc 602: .Xt fstat 1 ,
1.15 aaron 603: .Xr kill 1 ,
1.37 jmc 604: .Xr netstat 1 ,
1.79 ! jasper 605: .Xr nfsstat 1 ,
1.15 aaron 606: .Xr ps 1 ,
607: .Xr top 1 ,
1.37 jmc 608: .Xr iostat 8 ,
1.62 matthieu 609: .Xr pfctl 8 ,
1.37 jmc 610: .Xr pstat 8 ,
611: .Xr renice 8 ,
1.48 deanna 612: .Xr sysctl 8 ,
1.37 jmc 613: .Xr vmstat 8
1.1 deraadt 614: .Sh HISTORY
615: The
1.13 aaron 616: .Nm
1.73 jmc 617: program first appeared in
1.1 deraadt 618: .Bx 4.3 .
619: .Sh BUGS
620: Certain displays presume a minimum of 80 characters per line.
621: The
622: .Ic vmstat
623: display looks out of place because it is (it was added in as
624: a separate display rather than created as a new program).
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