Annotation of src/usr.bin/systat/systat.1, Revision 1.93
1.93 ! okan 1: .\" $OpenBSD: systat.1,v 1.92 2011/04/29 05:48:04 lum 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: .\"
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8: .\" modification, are permitted provided that the following conditions
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11: .\" notice, this list of conditions and the following disclaimer.
12: .\" 2. Redistributions in binary form must reproduce the above copyright
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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: .\"
1.93 ! okan 33: .Dd $Mdocdate: April 29 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.
1.93 ! okan 298: Each address
! 299: is displayed numerically in the format
! 300: .Dq host:port .
1.52 jmc 301: By default, network servers awaiting requests are not displayed.
1.93 ! okan 302: It is also possible to have addresses displayed symbolically,
! 303: when possible, and limit the display to a set of protocols
! 304: (the minimum unambiguous prefix may be supplied):
! 305: .Bl -tag -width Ar
! 306: .It Cm all
! 307: Toggle the displaying of server processes awaiting requests (this
! 308: is the equivalent of the
! 309: .Fl a
! 310: flag to
! 311: .Xr netstat 1 ) .
! 312: .It Cm names
! 313: Display network addresses symbolically.
! 314: .It Cm numbers
! 315: Display network addresses numerically.
! 316: .It Cm reset
! 317: Reset matching mechanisms to the default.
1.76 jmc 318: .\".It Cm show Oo
319: .\".Ar protocols \*(Ba ports \*(Ba hosts
320: .\".Oc
321: .\"Show, on the command line, the currently selected protocols,
322: .\"hosts, and ports.
323: .\"Protocols, hosts and ports which are being ignored are prefixed with a
324: .\".Ql \&! .
325: .\"If an argument is supplied to
326: .\".Cm show ,
327: .\"then only the requested information will be displayed.
1.93 ! okan 328: .It Cm tcp \*(Ba udp
! 329: Display only network connections using the indicated protocol.
! 330: .El
1.79 jasper 331: .It Ic nfsclient
1.80 jmc 332: Display statistics about NFS client activity.
1.84 jmc 333: Output resembles
1.79 jasper 334: .Cm nfsstat Fl c .
335: .It Ic nfsserver
1.80 jmc 336: Display statistics about NFS server activity.
1.84 jmc 337: Output resembles
1.79 jasper 338: .Cm nfsstat Fl s .
1.62 matthieu 339: .It Ic pf
1.64 jmc 340: Display filter information about
1.62 matthieu 341: .Xr pf 4 ,
342: similar to the output of
1.64 jmc 343: .Cm pfctl Fl s Cm info
1.62 matthieu 344: option.
1.1 deraadt 345: .It Ic pigs
1.73 jmc 346: Display those processes resident in main
1.1 deraadt 347: memory and getting the
1.73 jmc 348: largest portion of the processor.
1.1 deraadt 349: When less than 100% of the
350: processor is scheduled to user processes, the remaining time
1.13 aaron 351: is accounted to the
352: .Dq idle
353: process.
1.68 canacar 354: .It Ic pool
355: Display kernel
356: .Xr pool 9
357: statistics similar to the output of
358: .Cm vmstat Fl m .
1.69 canacar 359: Available orderings are:
1.75 canacar 360: .Ic name ,
361: .Ic requests ,
1.76 jmc 362: .Ic size ,
1.69 canacar 363: and
1.75 canacar 364: .Ic number of pages .
1.62 matthieu 365: .It Ic queues
1.64 jmc 366: Display statistics about the active
367: .Xr altq 9
368: queues, similar to the output of
1.62 matthieu 369: .Cm pfctl Fl s Cm queue .
370: .It Ic rules
1.64 jmc 371: Display pf rules statistics, similar to the output of
1.62 matthieu 372: .Cm pfctl Fl s Cm rules .
1.52 jmc 373: .It Ic sensors
1.73 jmc 374: Display the current values of available hardware sensors,
1.52 jmc 375: in a format similar to that of
376: .Xr sysctl 8 .
1.62 matthieu 377: .It Ic states
1.64 jmc 378: Display pf states statistics, similar to the output of
1.62 matthieu 379: .Cm pfctl Fl s Cm states .
1.69 canacar 380: Available orderings are:
381: .Ic none ,
382: .Ic bytes ,
383: .Ic expiry ,
384: .Ic packets ,
385: .Ic age ,
386: .Ic source address ,
387: .Ic source port ,
388: .Ic destination address ,
389: .Ic destination port ,
390: .Ic rate ,
391: and
392: .Ic peak
393: columns.
1.1 deraadt 394: .It Ic swap
1.12 aaron 395: Show information about swap space usage on all the
1.1 deraadt 396: swap areas compiled into the kernel.
397: The first column is the device name of the partition.
398: The next column is the total space available in the partition.
1.12 aaron 399: The
1.1 deraadt 400: .Ar Used
401: column indicates the total blocks used so far;
402: the graph shows the percentage of space in use on each partition.
1.8 aaron 403: If there is more than one swap partition in use,
1.1 deraadt 404: a total line is also shown.
1.8 aaron 405: Areas known to the kernel but not in use are shown as not available.
1.1 deraadt 406: .It Ic vmstat
407: Take over the entire display and show a (rather crowded) compendium
408: of statistics related to virtual memory usage, process scheduling,
1.84 jmc 409: device interrupts, system name translation caching, disk I/O, etc.
1.73 jmc 410: This view is the default.
1.1 deraadt 411: .Pp
1.86 lum 412: Below the top line are statistics on memory utilization.
1.1 deraadt 413: The first row of the table reports memory usage only among
1.8 aaron 414: active processes, that is, processes that have run in the previous
1.1 deraadt 415: twenty seconds.
416: The second row reports on memory usage of all processes.
1.47 millert 417: The first column reports on the amount of physical memory
1.1 deraadt 418: claimed by processes.
1.29 jmc 419: The second column reports the same figure for
1.47 millert 420: virtual memory, that is, the amount of memory that would be
421: needed if all processes were resident at the same time.
422: Finally, the last column shows the amount of physical memory
1.1 deraadt 423: on the free list.
424: .Pp
1.5 flipk 425: Below the memory display is a list of the average number of processes
1.13 aaron 426: (over the last refresh interval) that are runnable
427: .Pq Sq r ,
428: in disk wait other than paging
429: .Pq Sq d ,
430: sleeping
431: .Pq Sq s ,
432: and swapped out but desiring to run
433: .Pq Sq w .
1.1 deraadt 434: Below the queue length listing is a numerical listing and
435: a bar graph showing the amount of
1.40 dlg 436: interrupt (shown as
1.63 sobrado 437: .Ql \*(Ba ) ,
1.16 aaron 438: system (shown as
439: .Ql = ) ,
440: user (shown as
1.43 jmc 441: .Ql \*(Gt ) ,
1.16 aaron 442: nice (shown as
443: .Ql - ) ,
444: and idle time (shown as
1.29 jmc 445: .Ql \ \& ) .
1.1 deraadt 446: .Pp
1.12 aaron 447: To the right of the Proc display are statistics about
1.16 aaron 448: Context switches
449: .Pq Dq Csw ,
450: Traps
451: .Pq Dq Trp ,
452: Syscalls
453: .Pq Dq Sys ,
454: Interrupts
455: .Pq Dq Int ,
456: Soft interrupts
457: .Pq Dq Sof ,
458: and Faults
459: .Pq Dq Flt
1.7 deraadt 460: which have occurred during the last refresh interval.
1.5 flipk 461: .Pp
1.83 jmc 462: Below the CPU usage graph are statistics on name translations.
1.1 deraadt 463: It lists the number of names translated in the previous interval,
464: the number and percentage of the translations that were
465: handled by the system wide name translation cache, and
466: the number and percentage of the translations that were
467: handled by the per process name translation cache.
468: .Pp
1.5 flipk 469: At the bottom left is the disk usage display.
470: It reports the number of seeks, transfers, number
471: of kilobyte blocks transferred per second averaged over the
1.90 lum 472: refresh period of the display, and
1.5 flipk 473: the time spent in disk accesses.
474: .Pp
1.1 deraadt 475: Under the date in the upper right hand quadrant are statistics
476: on paging and swapping activity.
477: The first two columns report the average number of pages
478: brought in and out per second over the last refresh interval
479: due to page faults and the paging daemon.
480: The third and fourth columns report the average number of pages
481: brought in and out per second over the last refresh interval
482: due to swap requests initiated by the scheduler.
483: The first row of the display shows the average
1.8 aaron 484: number of disk transfers per second over the last refresh interval.
485: The second row of the display shows the average
1.1 deraadt 486: number of pages transferred per second over the last refresh interval.
487: .Pp
488: Running down the right hand side of the display is a breakdown
489: of the interrupts being handled by the system.
490: At the top of the list is the total interrupts per second
491: over the time interval.
492: The rest of the column breaks down the total on a device
493: by device basis.
494: Only devices that have interrupted at least once since boot time are shown.
1.83 jmc 495: .Pp
1.89 lum 496: Below the Interrupts display are
497: the average number of input and output packets per second
498: for all interfaces over the last refresh interval.
1.5 flipk 499: .Pp
500: Below the SWAPPING display and slightly to the left of the Interrupts
1.18 aaron 501: display is a list of virtual memory statistics.
502: The abbreviations are:
1.36 jmc 503: .Pp
1.38 niallo 504: .Bl -tag -compact -width "kmapentXX" -offset indent
1.21 deraadt 505: .It forks
506: process forks
507: .It fkppw
508: forks where parent waits
509: .It fksvm
510: forks where vmspace is shared
511: .It pwait
512: fault had to wait on a page
513: .It relck
514: fault relock called
515: .It rlkok
516: fault relock is successful
517: .It noram
518: faults out of ram
519: .It ndcpy
520: number of times fault clears "need copy"
521: .It fltcp
522: number of times fault promotes with copy
523: .It zfod
524: fault promotes with zerofill
1.5 flipk 525: .It cow
1.21 deraadt 526: number of times fault anon cow
527: .It fmin
528: min number of free pages
529: .It ftarg
530: target number of free pages
531: .It itarg
532: target number of inactive pages
533: .It wired
534: wired pages
1.25 deraadt 535: .It pdfre
1.21 deraadt 536: pages daemon freed since boot
537: .It pdscn
538: pages daemon scanned since boot
1.38 niallo 539: .It pzidle
540: number of zeroed pages
541: .It kmapent
542: number of kernel map entries
1.5 flipk 543: .El
544: .Pp
1.13 aaron 545: The
546: .Ql %zfod
547: value is more interesting when observed over a long
1.76 jmc 548: period, such as from boot time.
549: .\"(see the
550: .\".Cm boot
551: .\"option below).
1.35 markus 552: .El
1.74 jmc 553: .\".Pp
554: .\"The following commands are specific to the
555: .\".Ic vmstat
556: .\"and
557: .\".Ic ifstat
558: .\"views; the minimum unambiguous prefix may be supplied.
559: .\".Pp
560: .\".Bl -tag -width Ds -compact
561: .\".It Cm boot
562: .\"Display cumulative statistics since the system was booted.
563: .\".It Cm run
564: .\"Display statistics as a running total from the point this
565: .\"command is given.
566: .\".It Cm time
567: .\"Display statistics averaged over the refresh interval (the default).
568: .\".It Cm zero
569: .\"Reset running statistics to zero.
570: .\".El
571: .\".Pp
572: .\"The following commands are common to each view which shows
573: .\"information about disk drives.
574: .\"These commands are used to select a set of drives to report on,
575: .\"should a system have more drives configured
576: .\"than can normally be displayed on the screen.
577: .\".Pp
578: .\".Bl -tag -width Tx -compact
579: .\".It Cm display Op Ar drives
580: .\"Display information about the drives indicated.
581: .\"Multiple drives may be specified, separated by spaces.
582: .\".It Cm ignore Op Ar drives
583: .\"Do not display information about the drives indicated.
584: .\"Multiple drives may be specified, separated by spaces.
585: .\".El
1.1 deraadt 586: .Sh FILES
1.73 jmc 587: .Bl -tag -width "/etc/networksXXX" -compact
1.1 deraadt 588: .It Pa /etc/hosts
1.73 jmc 589: Host names.
1.1 deraadt 590: .It Pa /etc/networks
1.73 jmc 591: Network names.
1.62 matthieu 592: .It Pa /etc/pf.conf
1.73 jmc 593: .Xr pf 4
594: configuration.
1.1 deraadt 595: .It Pa /etc/services
1.73 jmc 596: Port names.
1.1 deraadt 597: .El
1.15 aaron 598: .Sh SEE ALSO
1.85 jmc 599: .Xr fstat 1 ,
1.15 aaron 600: .Xr kill 1 ,
1.37 jmc 601: .Xr netstat 1 ,
1.79 jasper 602: .Xr nfsstat 1 ,
1.15 aaron 603: .Xr ps 1 ,
604: .Xr top 1 ,
1.37 jmc 605: .Xr iostat 8 ,
1.62 matthieu 606: .Xr pfctl 8 ,
1.37 jmc 607: .Xr pstat 8 ,
608: .Xr renice 8 ,
1.48 deanna 609: .Xr sysctl 8 ,
1.37 jmc 610: .Xr vmstat 8
1.1 deraadt 611: .Sh HISTORY
612: The
1.13 aaron 613: .Nm
1.73 jmc 614: program first appeared in
1.1 deraadt 615: .Bx 4.3 .
616: .Sh BUGS
617: Certain displays presume a minimum of 80 characters per line.
618: The
619: .Ic vmstat
620: display looks out of place because it is (it was added in as
621: a separate display rather than created as a new program).
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