Annotation of src/usr.bin/systat/systat.1, Revision 1.71
1.71 ! canacar 1: .\" $OpenBSD: systat.1,v 1.70 2008/11/02 08:49:59 jmc 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
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1.1 deraadt 16: .\" may be used to endorse or promote products derived from this software
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31: .\" @(#)systat.1 8.2 (Berkeley) 12/30/93
32: .\"
1.69 canacar 33: .Dd $Mdocdate: November 2 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
1.1 deraadt 49: displays various system statistics in a screen oriented fashion
50: using the curses screen display library,
51: .Xr curses 3 .
52: .Pp
53: While
1.13 aaron 54: .Nm
1.1 deraadt 55: is running the screen is usually divided into two windows (an exception
1.16 aaron 56: is the vmstat display which uses the entire screen).
57: The upper window depicts the current system load average.
58: The information displayed in the lower window may vary, depending on
59: user commands.
60: The last line on the screen is reserved for user
1.1 deraadt 61: input and error messages.
62: .Pp
63: By default
1.13 aaron 64: .Nm
1.1 deraadt 65: displays the processes getting the largest percentage of the processor
1.16 aaron 66: in the lower window.
1.60 jmc 67: Other displays include swap space usage, disk I/O
1.1 deraadt 68: statistics (a la
1.13 aaron 69: .Xr iostat 8 ) ,
1.1 deraadt 70: virtual memory statistics (a la
1.13 aaron 71: .Xr vmstat 8 ) ,
72: network
73: .Dq mbuf
74: utilization, and network connections (a la
75: .Xr netstat 1 ) .
1.1 deraadt 76: .Pp
77: Input is interpreted at two different levels.
1.13 aaron 78: A
79: .Dq global
80: command interpreter processes all keyboard input.
1.1 deraadt 81: If this command interpreter fails to recognize a command, the
1.16 aaron 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
1.64 jmc 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.
1.34 itojun 97: .It Fl n
98: Do not try to reverse-map IP address.
1.62 matthieu 99: .It Fl s Ar delay
1.31 jmc 100: Specifies the screen refresh time interval in seconds.
1.62 matthieu 101: This option is overridden by the final
1.64 jmc 102: .Ar delay
1.62 matthieu 103: argument if given.
1.31 jmc 104: The default interval is 5 seconds.
1.62 matthieu 105: .It Fl w Ar width
1.63 sobrado 106: Specifies the maximum width of the display.
1.62 matthieu 107: .\" XXX not sure for the above.
108: .It Ar view
1.1 deraadt 109: The
1.62 matthieu 110: .Ar view
1.2 deraadt 111: argument expects to be one of:
1.62 matthieu 112: .Ic vmstat ,
1.1 deraadt 113: .Ic pigs ,
1.62 matthieu 114: .Ic ifstat ,
1.1 deraadt 115: .Ic iostat ,
1.49 deraadt 116: .Ic sensors ,
1.1 deraadt 117: .Ic mbufs ,
1.62 matthieu 118: .Ic netstat ,
119: .Ic swap ,
120: .Ic states ,
121: .Ic rules ,
1.68 canacar 122: .Ic queues ,
1.71 ! canacar 123: .Ic pf ,
! 124: .Ic pool ,
! 125: .Ic malloc ,
1.1 deraadt 126: or
1.71 ! canacar 127: .Ic buckets .
1.2 deraadt 128: These displays can also be requested interactively and are described in
1.1 deraadt 129: full detail below.
1.62 matthieu 130: .Ar view
1.53 jmc 131: may be abbreviated to the minimum unambiguous prefix;
132: for example,
1.50 jmc 133: .Dq io
134: for
135: .Dq iostat .
1.62 matthieu 136: .It Ar delay
1.1 deraadt 137: The
1.62 matthieu 138: .Ar delay
1.16 aaron 139: specifies the screen refresh time interval in seconds.
140: This is provided for backwards compatibility, and overrides the
1.31 jmc 141: .Ar wait
142: interval specified with the
1.2 deraadt 143: .Fl w
144: flag.
1.31 jmc 145: The default interval is 5 seconds.
1.1 deraadt 146: .El
147: .Pp
148: Certain characters cause immediate action by
1.61 jmc 149: .Nm .
1.63 sobrado 150: These are:
1.1 deraadt 151: .Bl -tag -width Fl
152: .It Ic \&:
153: Move the cursor to the command line and interpret the input
1.16 aaron 154: line typed as a command.
155: While entering a command the
1.1 deraadt 156: current character erase, word erase, and line kill characters
157: may be used.
1.69 canacar 158: .It Ic o
159: Select the next ordering which sorts the rows according to a
1.70 jmc 160: combination of columns.
161: Available orderings depend on the view.
162: Not all views support orderings.
1.66 canacar 163: .It Ic p
164: Pause
165: .Nm .
1.59 jmc 166: .It Ic q
167: Exit
1.66 canacar 168: .Nm .
1.69 canacar 169: .It Ic r
170: Reverse the selected ordering if supported by the view.
1.66 canacar 171: .It Ic ^A \*(Ba Aq Ic Home
172: Jump to the beginning of the current view.
173: .It Ic ^B \*(Ba Aq Ic right arrow
174: Select previous view.
175: .It Ic ^E \*(Ba Aq Ic End
176: Jump to the end of the current view.
177: .It Ic ^F \*(Ba Aq Ic left arrow
178: Select the next view.
179: .It Ic ^G
180: Print the name of the current
181: .Dq display
182: being shown in
183: the lower window and the refresh interval.
184: .It Ic ^L
185: Refresh the screen.
186: .It Ic ^N \*(Ba Aq Ic down arrow
187: Scroll current view down by one line.
188: .It Ic ^P \*(Ba Aq Ic up arrow
189: Scroll current view up by one line.
190: .It Ic ^V \*(Ba Aq Ic Page Down
191: Scroll current view down by one page.
192: .It Ic Alt-V \*(Ba Aq Ic Page Up
193: Scroll current view up by one page.
194: .It Ic ^Z
195: Suspend
1.59 jmc 196: .Nm .
1.1 deraadt 197: .El
198: .Pp
1.13 aaron 199: The following commands are interpreted by the
200: .Dq global
1.1 deraadt 201: command interpreter.
202: .Bl -tag -width Fl
203: .It Ic help
204: Print the names of the available displays on the command line.
205: .It Ic load
206: Print the load average over the past 1, 5, and 15 minutes
207: on the command line.
1.52 jmc 208: .It Ic quit
209: Exit
1.61 jmc 210: .Nm .
1.52 jmc 211: (This may be abbreviated to
212: .Ic q . )
1.1 deraadt 213: .It Ic stop
214: Stop refreshing the screen.
215: .It Xo
216: .Op Ic start
217: .Op Ar number
218: .Xc
1.16 aaron 219: Start (continue) refreshing the screen.
220: If a second, numeric,
1.1 deraadt 221: argument is provided it is interpreted as a refresh interval
222: (in seconds).
223: Supplying only a number will set the refresh interval to this
224: value.
225: .El
226: .Pp
1.53 jmc 227: Again,
228: .Ar display
229: may be abbreviated to the minimum unambiguous prefix.
1.1 deraadt 230: The available displays are:
1.52 jmc 231: .Bl -tag -width "netstatXXX"
1.71 ! canacar 232: .It Ic buckets
! 233: Display kernel
! 234: .Xr malloc 9
! 235: bucket statistics similar to the output of
! 236: .Cm vmstat Fl m .
1.52 jmc 237: .It Ic ifstat
238: Display, in the lower window, interface statistics.
239: The
240: .Dq State
241: column has the format
242: .Sm off
243: .Xo
244: .Cm up \*(Ba dn
245: .Bq : Cm U \*(Ba D .
246: .Xc
247: .Sm on
248: .Sq up
249: and
250: .Sq dn
251: represent whether the interface is up or down.
252: .Sq U
253: and
254: .Sq D
255: represent whether the interface is connected or not;
256: in the case of
257: .Xr carp 4
258: interfaces, whether the interface is in master or backup state, respectively.
259: See below for more options.
260: .It Ic iostat
261: Display, in the lower window, statistics about disk throughput.
262: Statistics
263: on disk throughput show, for each drive, data transferred in kilobytes,
264: number of disk transactions performed, and time spent in disk accesses
1.56 otto 265: (in fractions of a second).
1.52 jmc 266: .It Ic mbufs
267: Display, in the lower window, the number of mbufs allocated
268: for particular uses, i.e., data, socket structures, etc.
1.71 ! canacar 269: .It Ic malloc
! 270: Display kernel
! 271: .Xr malloc 9
! 272: type statistics similar to the output of
! 273: .Cm vmstat Fl m .
! 274: Available orderings are:
! 275: .Ic name ,
! 276: .Ic inuse ,
! 277: .Ic memuse ,
! 278: and
! 279: .Ic requests .
1.52 jmc 280: .It Ic netstat
281: Display, in the lower window, network connections.
282: By default, network servers awaiting requests are not displayed.
283: Each address
284: is displayed in the format
285: .Dq host.port ,
286: with each shown symbolically, when possible.
287: It is possible to have addresses displayed numerically,
288: limit the display to a set of ports, hosts, and/or protocols
289: (the minimum unambiguous prefix may be supplied):
290: .Bl -tag -width Ar
291: .It Cm all
292: Toggle the displaying of server processes awaiting requests (this
293: is the equivalent of the
294: .Fl a
295: flag to
296: .Xr netstat 1 ) .
297: .It Cm display Op Ar items
298: Display information about the connections associated with the
299: specified hosts or ports.
300: As for
301: .Ar ignore ,
302: .Ar items
303: may be names or numbers.
304: .It Cm ignore Op Ar items
305: Do not display information about connections associated with
306: the specified hosts or ports.
307: Hosts and ports may be specified
308: by name
309: .Pf ( Dq vangogh ,
310: .Dq ftp ) ,
311: or numerically.
312: Host addresses
313: use the Internet dot notation
314: .Pq Dq 128.32.0.9 .
315: Multiple items
316: may be specified with a single command by separating them with
317: spaces.
318: .It Cm names
319: Display network addresses symbolically.
320: .It Cm numbers
321: Display network addresses numerically.
322: .It Cm reset
323: Reset the port, host, and protocol matching mechanisms to the default
324: (any protocol, port, or host).
1.63 sobrado 325: .It Cm show Oo
326: .Ar protocols \*(Ba ports \*(Ba hosts
327: .Oc
1.52 jmc 328: Show, on the command line, the currently selected protocols,
329: hosts, and ports.
1.55 moritz 330: Protocols, hosts and ports which are being ignored are prefixed with a
1.52 jmc 331: .Ql \&! .
1.55 moritz 332: If an argument is supplied to
1.52 jmc 333: .Cm show ,
334: then only the requested information will be displayed.
1.55 moritz 335: .It Cm tcp \*(Ba udp \*(Ba all
336: Display only network connections using the indicated protocol.
1.52 jmc 337: .El
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
345: Display, in the lower window, those processes resident in main
346: memory and getting the
347: largest portion of the processor (the default display).
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:
359: .Ic name
360: and
361: .Ic requests .
1.62 matthieu 362: .It Ic queues
1.64 jmc 363: Display statistics about the active
364: .Xr altq 9
365: queues, similar to the output of
1.62 matthieu 366: .Cm pfctl Fl s Cm queue .
367: .It Ic rules
1.64 jmc 368: Display pf rules statistics, similar to the output of
1.62 matthieu 369: .Cm pfctl Fl s Cm rules .
1.52 jmc 370: .It Ic sensors
371: Display, in the lower window,
372: the current values of available hardware sensors,
373: in a format similar to that of
374: .Xr sysctl 8 .
1.62 matthieu 375: .It Ic states
1.64 jmc 376: Display pf states statistics, similar to the output of
1.62 matthieu 377: .Cm pfctl Fl s Cm states .
1.69 canacar 378: Available orderings are:
379: .Ic none ,
380: .Ic bytes ,
381: .Ic expiry ,
382: .Ic packets ,
383: .Ic age ,
384: .Ic source address ,
385: .Ic source port ,
386: .Ic destination address ,
387: .Ic destination port ,
388: .Ic rate ,
389: and
390: .Ic peak
391: columns.
1.1 deraadt 392: .It Ic swap
1.12 aaron 393: Show information about swap space usage on all the
1.1 deraadt 394: swap areas compiled into the kernel.
395: The first column is the device name of the partition.
396: The next column is the total space available in the partition.
1.12 aaron 397: The
1.1 deraadt 398: .Ar Used
399: column indicates the total blocks used so far;
400: the graph shows the percentage of space in use on each partition.
1.8 aaron 401: If there is more than one swap partition in use,
1.1 deraadt 402: a total line is also shown.
1.8 aaron 403: Areas known to the kernel but not in use are shown as not available.
1.1 deraadt 404: .It Ic vmstat
405: Take over the entire display and show a (rather crowded) compendium
406: of statistics related to virtual memory usage, process scheduling,
1.60 jmc 407: device interrupts, system name translation caching, disk I/O etc.
1.1 deraadt 408: .Pp
409: The upper left quadrant of the screen shows the number
1.8 aaron 410: of users logged in and the load average over the last 1, 5,
411: and 15 minute intervals.
1.1 deraadt 412: Below this line are statistics on memory utilization.
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
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
472: refresh period of the display (by default, five seconds), and
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.
1.5 flipk 495: .Pp
496: Below the SWAPPING display and slightly to the left of the Interrupts
1.18 aaron 497: display is a list of virtual memory statistics.
498: The abbreviations are:
1.36 jmc 499: .Pp
1.38 niallo 500: .Bl -tag -compact -width "kmapentXX" -offset indent
1.21 deraadt 501: .It forks
502: process forks
503: .It fkppw
504: forks where parent waits
505: .It fksvm
506: forks where vmspace is shared
507: .It pwait
508: fault had to wait on a page
509: .It relck
510: fault relock called
511: .It rlkok
512: fault relock is successful
513: .It noram
514: faults out of ram
515: .It ndcpy
516: number of times fault clears "need copy"
517: .It fltcp
518: number of times fault promotes with copy
519: .It zfod
520: fault promotes with zerofill
1.5 flipk 521: .It cow
1.21 deraadt 522: number of times fault anon cow
523: .It fmin
524: min number of free pages
525: .It ftarg
526: target number of free pages
527: .It itarg
528: target number of inactive pages
529: .It wired
530: wired pages
1.25 deraadt 531: .It pdfre
1.21 deraadt 532: pages daemon freed since boot
533: .It pdscn
534: pages daemon scanned since boot
1.38 niallo 535: .It pzidle
536: number of zeroed pages
537: .It kmapent
538: number of kernel map entries
1.5 flipk 539: .El
540: .Pp
1.13 aaron 541: The
542: .Ql %zfod
543: value is more interesting when observed over a long
1.5 flipk 544: period, such as from boot time (see the
545: .Cm boot
546: option below).
1.35 markus 547: .El
548: .Pp
549: The following commands are specific to the
550: .Ic vmstat
551: and
552: .Ic ifstat
553: displays; the minimum unambiguous prefix may be supplied.
554: .Pp
555: .Bl -tag -width Ds -compact
556: .It Cm boot
557: Display cumulative statistics since the system was booted.
558: .It Cm run
559: Display statistics as a running total from the point this
560: command is given.
561: .It Cm time
562: Display statistics averaged over the refresh interval (the default).
563: .It Cm zero
564: Reset running statistics to zero.
1.1 deraadt 565: .El
566: .Pp
567: Certain information may be discarded when the screen size is
1.16 aaron 568: insufficient for display.
569: For example, on a machine with 10 drives the
1.1 deraadt 570: .Ic iostat
1.16 aaron 571: bar graph displays only 3 drives on a 24 line terminal.
572: When a bar graph would overflow the allotted screen space it is
573: truncated and the actual value is printed
574: .Dq over top
575: of the bar.
1.1 deraadt 576: .Pp
577: The following commands are common to each display which shows
1.16 aaron 578: information about disk drives.
579: These commands are used to
1.1 deraadt 580: select a set of drives to report on, should your system have
581: more drives configured than can normally be displayed on the
582: screen.
583: .Pp
584: .Bl -tag -width Tx -compact
1.54 jmc 585: .It Cm display Op Ar drives
586: Display information about the drives indicated.
587: Multiple drives may be specified, separated by spaces.
1.1 deraadt 588: .It Cm ignore Op Ar drives
1.16 aaron 589: Do not display information about the drives indicated.
590: Multiple drives may be specified, separated by spaces.
1.1 deraadt 591: .El
592: .Sh FILES
593: .Bl -tag -width /etc/networks -compact
594: .It Pa /etc/hosts
1.22 miod 595: host names
1.1 deraadt 596: .It Pa /etc/networks
1.22 miod 597: network names
1.62 matthieu 598: .It Pa /etc/pf.conf
599: pf and altq configuration
1.1 deraadt 600: .It Pa /etc/services
1.22 miod 601: port names
1.1 deraadt 602: .El
1.15 aaron 603: .Sh SEE ALSO
1.37 jmc 604: .Xt fstat 1 ,
1.15 aaron 605: .Xr kill 1 ,
1.37 jmc 606: .Xr netstat 1 ,
1.15 aaron 607: .Xr ps 1 ,
608: .Xr top 1 ,
1.37 jmc 609: .Xr iostat 8 ,
1.62 matthieu 610: .Xr pfctl 8 ,
1.37 jmc 611: .Xr pstat 8 ,
612: .Xr renice 8 ,
1.48 deanna 613: .Xr sysctl 8 ,
1.37 jmc 614: .Xr vmstat 8
1.1 deraadt 615: .Sh HISTORY
616: The
1.13 aaron 617: .Nm
1.1 deraadt 618: program appeared in
619: .Bx 4.3 .
620: .Sh BUGS
621: Certain displays presume a minimum of 80 characters per line.
622: The
623: .Ic vmstat
624: display looks out of place because it is (it was added in as
625: a separate display rather than created as a new program).