Annotation of src/usr.bin/systat/systat.1, Revision 1.95
1.95 ! jmc 1: .\" $OpenBSD: systat.1,v 1.94 2012/08/17 01:44:57 okan 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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22: .\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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31: .\" @(#)systat.1 8.2 (Berkeley) 12/30/93
32: .\"
1.95 ! jmc 33: .Dd $Mdocdate: August 17 2012 $
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
1.94 okan 112: Specifies the maximum width of the output in raw, non-interactive mode.
1.62 matthieu 113: .It Ar view
1.1 deraadt 114: The
1.62 matthieu 115: .Ar view
1.2 deraadt 116: argument expects to be one of:
1.62 matthieu 117: .Ic vmstat ,
1.1 deraadt 118: .Ic pigs ,
1.62 matthieu 119: .Ic ifstat ,
1.1 deraadt 120: .Ic iostat ,
1.49 deraadt 121: .Ic sensors ,
1.1 deraadt 122: .Ic mbufs ,
1.62 matthieu 123: .Ic netstat ,
124: .Ic swap ,
125: .Ic states ,
126: .Ic rules ,
1.68 canacar 127: .Ic queues ,
1.71 canacar 128: .Ic pf ,
129: .Ic pool ,
130: .Ic malloc ,
1.80 jmc 131: .Ic buckets ,
132: .Ic nfsclient ,
1.1 deraadt 133: or
1.80 jmc 134: .Ic nfsserver .
1.2 deraadt 135: These displays can also be requested interactively and are described in
1.1 deraadt 136: full detail below.
1.62 matthieu 137: .Ar view
1.53 jmc 138: may be abbreviated to the minimum unambiguous prefix;
139: for example,
1.50 jmc 140: .Dq io
141: for
142: .Dq iostat .
1.62 matthieu 143: .It Ar delay
1.1 deraadt 144: The
1.62 matthieu 145: .Ar delay
1.73 jmc 146: argument specifies the screen refresh time interval in seconds.
147: This is provided for backwards compatibility, and overrides any
1.31 jmc 148: interval specified with the
1.73 jmc 149: .Fl s
1.2 deraadt 150: flag.
1.31 jmc 151: The default interval is 5 seconds.
1.1 deraadt 152: .El
153: .Pp
154: Certain characters cause immediate action by
1.61 jmc 155: .Nm .
1.63 sobrado 156: These are:
1.1 deraadt 157: .Bl -tag -width Fl
158: .It Ic \&:
159: Move the cursor to the command line and interpret the input
1.16 aaron 160: line typed as a command.
161: While entering a command the
1.1 deraadt 162: current character erase, word erase, and line kill characters
163: may be used.
1.69 canacar 164: .It Ic o
165: Select the next ordering which sorts the rows according to a
1.70 jmc 166: combination of columns.
167: Available orderings depend on the view.
168: Not all views support orderings.
1.66 canacar 169: .It Ic p
170: Pause
171: .Nm .
1.59 jmc 172: .It Ic q
1.73 jmc 173: Quit
1.66 canacar 174: .Nm .
1.69 canacar 175: .It Ic r
176: Reverse the selected ordering if supported by the view.
1.91 mpf 177: .It Ic \&,
178: Print numbers with thousand separators, where applicable.
1.66 canacar 179: .It Ic ^A \*(Ba Aq Ic Home
180: Jump to the beginning of the current view.
181: .It Ic ^B \*(Ba Aq Ic right arrow
1.84 jmc 182: Select the previous view.
1.66 canacar 183: .It Ic ^E \*(Ba Aq Ic End
184: Jump to the end of the current view.
185: .It Ic ^F \*(Ba Aq Ic left arrow
186: Select the next view.
187: .It Ic ^G
188: Print the name of the current
1.73 jmc 189: view being shown and the refresh interval.
1.66 canacar 190: .It Ic ^L
191: Refresh the screen.
192: .It Ic ^N \*(Ba Aq Ic down arrow
193: Scroll current view down by one line.
194: .It Ic ^P \*(Ba Aq Ic up arrow
195: Scroll current view up by one line.
196: .It Ic ^V \*(Ba Aq Ic Page Down
197: Scroll current view down by one page.
198: .It Ic Alt-V \*(Ba Aq Ic Page Up
199: Scroll current view up by one page.
200: .It Ic ^Z
201: Suspend
1.59 jmc 202: .Nm .
1.1 deraadt 203: .El
204: .Pp
1.13 aaron 205: The following commands are interpreted by the
206: .Dq global
1.1 deraadt 207: command interpreter.
208: .Bl -tag -width Fl
209: .It Ic help
1.73 jmc 210: Print the names of the available views on the command line.
1.52 jmc 211: .It Ic quit
1.73 jmc 212: Quit
1.61 jmc 213: .Nm .
1.52 jmc 214: (This may be abbreviated to
215: .Ic q . )
1.1 deraadt 216: .It Ic stop
217: Stop refreshing the screen.
218: .It Xo
219: .Op Ic start
220: .Op Ar number
221: .Xc
1.16 aaron 222: Start (continue) refreshing the screen.
223: If a second, numeric,
1.1 deraadt 224: argument is provided it is interpreted as a refresh interval
225: (in seconds).
226: Supplying only a number will set the refresh interval to this
227: value.
228: .El
229: .Pp
1.73 jmc 230: .Ar view
1.53 jmc 231: may be abbreviated to the minimum unambiguous prefix.
1.73 jmc 232: The available views are:
1.52 jmc 233: .Bl -tag -width "netstatXXX"
1.71 canacar 234: .It Ic buckets
235: Display kernel
236: .Xr malloc 9
237: bucket statistics similar to the output of
238: .Cm vmstat Fl m .
1.52 jmc 239: .It Ic ifstat
1.73 jmc 240: Display interface statistics.
1.52 jmc 241: The
242: .Dq State
243: column has the format
244: .Sm off
245: .Xo
246: .Cm up \*(Ba dn
247: .Bq : Cm U \*(Ba D .
248: .Xc
249: .Sm on
250: .Sq up
251: and
252: .Sq dn
253: represent whether the interface is up or down.
254: .Sq U
255: and
256: .Sq D
257: represent whether the interface is connected or not;
258: in the case of
259: .Xr carp 4
260: interfaces, whether the interface is in master or backup state, respectively.
1.92 lum 261: .Pp
1.91 mpf 262: The character
263: .Ic B
264: changes the counter view between bytes and bits.
1.92 lum 265: Pressing
266: .Ic b
267: displays statistics as calculated from boot time.
268: .Ic r
269: changes the counters to show their totals as calculated
270: between display refreshes.
271: .Ic t
272: changes the counters to show the average per second over
273: the display refresh interval;
274: this is the default.
1.52 jmc 275: .It Ic iostat
1.73 jmc 276: Display statistics about disk throughput.
1.52 jmc 277: Statistics
278: on disk throughput show, for each drive, data transferred in kilobytes,
279: number of disk transactions performed, and time spent in disk accesses
1.56 otto 280: (in fractions of a second).
1.71 canacar 281: .It Ic malloc
282: Display kernel
283: .Xr malloc 9
284: type statistics similar to the output of
285: .Cm vmstat Fl m .
286: Available orderings are:
287: .Ic name ,
288: .Ic inuse ,
289: .Ic memuse ,
290: and
291: .Ic requests .
1.72 jmc 292: .It Ic mbufs
1.78 canacar 293: Display mbuf usage information from kernel pools
294: and mbuf cluster pool statistics of each network interface.
1.52 jmc 295: .It Ic netstat
1.73 jmc 296: Display network connections.
1.93 okan 297: Each address
298: is displayed numerically in the format
299: .Dq host:port .
1.52 jmc 300: By default, network servers awaiting requests are not displayed.
1.93 okan 301: It is also possible to have addresses displayed symbolically,
302: when possible, and limit the display to a set of protocols
303: (the minimum unambiguous prefix may be supplied):
304: .Bl -tag -width Ar
305: .It Cm all
306: Toggle the displaying of server processes awaiting requests (this
307: is the equivalent of the
308: .Fl a
309: flag to
310: .Xr netstat 1 ) .
311: .It Cm names
312: Display network addresses symbolically.
313: .It Cm numbers
314: Display network addresses numerically.
315: .It Cm reset
316: Reset matching mechanisms to the default.
1.76 jmc 317: .\".It Cm show Oo
318: .\".Ar protocols \*(Ba ports \*(Ba hosts
319: .\".Oc
320: .\"Show, on the command line, the currently selected protocols,
321: .\"hosts, and ports.
322: .\"Protocols, hosts and ports which are being ignored are prefixed with a
323: .\".Ql \&! .
324: .\"If an argument is supplied to
325: .\".Cm show ,
326: .\"then only the requested information will be displayed.
1.93 okan 327: .It Cm tcp \*(Ba udp
328: Display only network connections using the indicated protocol.
329: .El
1.79 jasper 330: .It Ic nfsclient
1.80 jmc 331: Display statistics about NFS client activity.
1.84 jmc 332: Output resembles
1.79 jasper 333: .Cm nfsstat Fl c .
334: .It Ic nfsserver
1.80 jmc 335: Display statistics about NFS server activity.
1.84 jmc 336: Output resembles
1.79 jasper 337: .Cm nfsstat Fl s .
1.62 matthieu 338: .It Ic pf
1.64 jmc 339: Display filter information about
1.62 matthieu 340: .Xr pf 4 ,
341: similar to the output of
1.64 jmc 342: .Cm pfctl Fl s Cm info
1.62 matthieu 343: option.
1.1 deraadt 344: .It Ic pigs
1.73 jmc 345: Display those processes resident in main
1.1 deraadt 346: memory and getting the
1.73 jmc 347: largest portion of the processor.
1.1 deraadt 348: When less than 100% of the
349: processor is scheduled to user processes, the remaining time
1.13 aaron 350: is accounted to the
351: .Dq idle
352: process.
1.68 canacar 353: .It Ic pool
354: Display kernel
355: .Xr pool 9
356: statistics similar to the output of
357: .Cm vmstat Fl m .
1.69 canacar 358: Available orderings are:
1.75 canacar 359: .Ic name ,
360: .Ic requests ,
1.76 jmc 361: .Ic size ,
1.69 canacar 362: and
1.75 canacar 363: .Ic number of pages .
1.62 matthieu 364: .It Ic queues
1.64 jmc 365: Display statistics about the active
366: .Xr altq 9
367: queues, similar to the output of
1.62 matthieu 368: .Cm pfctl Fl s Cm queue .
369: .It Ic rules
1.64 jmc 370: Display pf rules statistics, similar to the output of
1.62 matthieu 371: .Cm pfctl Fl s Cm rules .
1.52 jmc 372: .It Ic sensors
1.73 jmc 373: Display the current values of available hardware sensors,
1.52 jmc 374: in a format similar to that of
375: .Xr sysctl 8 .
1.62 matthieu 376: .It Ic states
1.64 jmc 377: Display pf states statistics, similar to the output of
1.62 matthieu 378: .Cm pfctl Fl s Cm states .
1.69 canacar 379: Available orderings are:
380: .Ic none ,
381: .Ic bytes ,
382: .Ic expiry ,
383: .Ic packets ,
384: .Ic age ,
385: .Ic source address ,
386: .Ic source port ,
387: .Ic destination address ,
388: .Ic destination port ,
389: .Ic rate ,
390: and
391: .Ic peak
392: columns.
1.1 deraadt 393: .It Ic swap
1.12 aaron 394: Show information about swap space usage on all the
1.1 deraadt 395: swap areas compiled into the kernel.
396: The first column is the device name of the partition.
397: The next column is the total space available in the partition.
1.12 aaron 398: The
1.1 deraadt 399: .Ar Used
400: column indicates the total blocks used so far;
401: the graph shows the percentage of space in use on each partition.
1.8 aaron 402: If there is more than one swap partition in use,
1.1 deraadt 403: a total line is also shown.
1.8 aaron 404: Areas known to the kernel but not in use are shown as not available.
1.1 deraadt 405: .It Ic vmstat
406: Take over the entire display and show a (rather crowded) compendium
407: of statistics related to virtual memory usage, process scheduling,
1.84 jmc 408: device interrupts, system name translation caching, disk I/O, etc.
1.73 jmc 409: This view is the default.
1.1 deraadt 410: .Pp
1.86 lum 411: Below the top line are statistics on memory utilization.
1.1 deraadt 412: The first row of the table reports memory usage only among
1.8 aaron 413: active processes, that is, processes that have run in the previous
1.1 deraadt 414: twenty seconds.
415: The second row reports on memory usage of all processes.
1.47 millert 416: The first column reports on the amount of physical memory
1.1 deraadt 417: claimed by processes.
1.29 jmc 418: The second column reports the same figure for
1.47 millert 419: virtual memory, that is, the amount of memory that would be
420: needed if all processes were resident at the same time.
421: Finally, the last column shows the amount of physical memory
1.1 deraadt 422: on the free list.
423: .Pp
1.5 flipk 424: Below the memory display is a list of the average number of processes
1.13 aaron 425: (over the last refresh interval) that are runnable
426: .Pq Sq r ,
427: in disk wait other than paging
428: .Pq Sq d ,
429: sleeping
430: .Pq Sq s ,
431: and swapped out but desiring to run
432: .Pq Sq w .
1.1 deraadt 433: Below the queue length listing is a numerical listing and
434: a bar graph showing the amount of
1.40 dlg 435: interrupt (shown as
1.63 sobrado 436: .Ql \*(Ba ) ,
1.16 aaron 437: system (shown as
438: .Ql = ) ,
439: user (shown as
1.43 jmc 440: .Ql \*(Gt ) ,
1.16 aaron 441: nice (shown as
442: .Ql - ) ,
443: and idle time (shown as
1.29 jmc 444: .Ql \ \& ) .
1.1 deraadt 445: .Pp
1.12 aaron 446: To the right of the Proc display are statistics about
1.16 aaron 447: Context switches
448: .Pq Dq Csw ,
449: Traps
450: .Pq Dq Trp ,
451: Syscalls
452: .Pq Dq Sys ,
453: Interrupts
454: .Pq Dq Int ,
455: Soft interrupts
456: .Pq Dq Sof ,
457: and Faults
458: .Pq Dq Flt
1.7 deraadt 459: which have occurred during the last refresh interval.
1.5 flipk 460: .Pp
1.83 jmc 461: Below the CPU usage graph are statistics on name translations.
1.1 deraadt 462: It lists the number of names translated in the previous interval,
463: the number and percentage of the translations that were
464: handled by the system wide name translation cache, and
465: the number and percentage of the translations that were
466: handled by the per process name translation cache.
467: .Pp
1.5 flipk 468: At the bottom left is the disk usage display.
469: It reports the number of seeks, transfers, number
470: of kilobyte blocks transferred per second averaged over the
1.90 lum 471: refresh period of the display, and
1.5 flipk 472: the time spent in disk accesses.
473: .Pp
1.1 deraadt 474: Under the date in the upper right hand quadrant are statistics
475: on paging and swapping activity.
476: The first two columns report the average number of pages
477: brought in and out per second over the last refresh interval
478: due to page faults and the paging daemon.
479: The third and fourth columns report the average number of pages
480: brought in and out per second over the last refresh interval
481: due to swap requests initiated by the scheduler.
482: The first row of the display shows the average
1.8 aaron 483: number of disk transfers per second over the last refresh interval.
484: The second row of the display shows the average
1.1 deraadt 485: number of pages transferred per second over the last refresh interval.
486: .Pp
487: Running down the right hand side of the display is a breakdown
488: of the interrupts being handled by the system.
489: At the top of the list is the total interrupts per second
490: over the time interval.
491: The rest of the column breaks down the total on a device
492: by device basis.
493: Only devices that have interrupted at least once since boot time are shown.
1.83 jmc 494: .Pp
1.89 lum 495: Below the Interrupts display are
496: the average number of input and output packets per second
497: for all interfaces over the last refresh interval.
1.5 flipk 498: .Pp
499: Below the SWAPPING display and slightly to the left of the Interrupts
1.18 aaron 500: display is a list of virtual memory statistics.
501: The abbreviations are:
1.36 jmc 502: .Pp
1.38 niallo 503: .Bl -tag -compact -width "kmapentXX" -offset indent
1.21 deraadt 504: .It forks
505: process forks
506: .It fkppw
507: forks where parent waits
508: .It fksvm
509: forks where vmspace is shared
510: .It pwait
511: fault had to wait on a page
512: .It relck
513: fault relock called
514: .It rlkok
515: fault relock is successful
516: .It noram
517: faults out of ram
518: .It ndcpy
519: number of times fault clears "need copy"
520: .It fltcp
521: number of times fault promotes with copy
522: .It zfod
523: fault promotes with zerofill
1.5 flipk 524: .It cow
1.21 deraadt 525: number of times fault anon cow
526: .It fmin
527: min number of free pages
528: .It ftarg
529: target number of free pages
530: .It itarg
531: target number of inactive pages
532: .It wired
533: wired pages
1.25 deraadt 534: .It pdfre
1.21 deraadt 535: pages daemon freed since boot
536: .It pdscn
537: pages daemon scanned since boot
1.38 niallo 538: .It pzidle
539: number of zeroed pages
540: .It kmapent
541: number of kernel map entries
1.5 flipk 542: .El
1.35 markus 543: .El
1.74 jmc 544: .\".Pp
545: .\"The following commands are specific to the
546: .\".Ic vmstat
547: .\"and
548: .\".Ic ifstat
549: .\"views; the minimum unambiguous prefix may be supplied.
550: .\".Pp
551: .\".Bl -tag -width Ds -compact
552: .\".It Cm boot
553: .\"Display cumulative statistics since the system was booted.
554: .\".It Cm run
555: .\"Display statistics as a running total from the point this
556: .\"command is given.
557: .\".It Cm time
558: .\"Display statistics averaged over the refresh interval (the default).
559: .\".It Cm zero
560: .\"Reset running statistics to zero.
561: .\".El
562: .\".Pp
563: .\"The following commands are common to each view which shows
564: .\"information about disk drives.
565: .\"These commands are used to select a set of drives to report on,
566: .\"should a system have more drives configured
567: .\"than can normally be displayed on the screen.
568: .\".Pp
569: .\".Bl -tag -width Tx -compact
570: .\".It Cm display Op Ar drives
571: .\"Display information about the drives indicated.
572: .\"Multiple drives may be specified, separated by spaces.
573: .\".It Cm ignore Op Ar drives
574: .\"Do not display information about the drives indicated.
575: .\"Multiple drives may be specified, separated by spaces.
576: .\".El
1.1 deraadt 577: .Sh FILES
1.73 jmc 578: .Bl -tag -width "/etc/networksXXX" -compact
1.1 deraadt 579: .It Pa /etc/hosts
1.73 jmc 580: Host names.
1.1 deraadt 581: .It Pa /etc/networks
1.73 jmc 582: Network names.
1.62 matthieu 583: .It Pa /etc/pf.conf
1.73 jmc 584: .Xr pf 4
585: configuration.
1.1 deraadt 586: .It Pa /etc/services
1.73 jmc 587: Port names.
1.1 deraadt 588: .El
1.15 aaron 589: .Sh SEE ALSO
1.85 jmc 590: .Xr fstat 1 ,
1.15 aaron 591: .Xr kill 1 ,
1.37 jmc 592: .Xr netstat 1 ,
1.79 jasper 593: .Xr nfsstat 1 ,
1.15 aaron 594: .Xr ps 1 ,
595: .Xr top 1 ,
1.37 jmc 596: .Xr iostat 8 ,
1.62 matthieu 597: .Xr pfctl 8 ,
1.37 jmc 598: .Xr pstat 8 ,
599: .Xr renice 8 ,
1.48 deanna 600: .Xr sysctl 8 ,
1.37 jmc 601: .Xr vmstat 8
1.1 deraadt 602: .Sh HISTORY
603: The
1.13 aaron 604: .Nm
1.73 jmc 605: program first appeared in
1.1 deraadt 606: .Bx 4.3 .
607: .Sh BUGS
608: Certain displays presume a minimum of 80 characters per line.
609: The
610: .Ic vmstat
611: display looks out of place because it is (it was added in as
612: a separate display rather than created as a new program).
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