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RCS file: /cvsrepo/anoncvs/cvs/src/usr.bin/vmstat/vmstat.8,v
retrieving revision 1.7
retrieving revision 1.8
diff -c -r1.7 -r1.8
*** src/usr.bin/vmstat/vmstat.8	1997/01/01 18:57:12	1.7
--- src/usr.bin/vmstat/vmstat.8	1998/01/03 12:14:37	1.8
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*** 1,4 ****
! .\"	$OpenBSD: vmstat.8,v 1.7 1997/01/01 18:57:12 kstailey Exp $
  .\"	$NetBSD: vmstat.8,v 1.12 1996/05/10 23:19:30 thorpej Exp $
  .\"
  .\" Copyright (c) 1986, 1993
--- 1,4 ----
! .\"	$OpenBSD: vmstat.8,v 1.8 1998/01/03 12:14:37 deraadt Exp $
  .\"	$NetBSD: vmstat.8,v 1.12 1996/05/10 23:19:30 thorpej Exp $
  .\"
  .\" Copyright (c) 1986, 1993
***************
*** 34,210 ****
  .\"
  .\"	@(#)vmstat.8	8.1 (Berkeley) 6/6/93
  .\"
! .TH VMSTAT 8 "June 6, 1993"
! .UC 4
! .SH NAME
! vmstat \- report virtual memory statistics
! .SH SYNOPSIS
! .nf
! .ft B
! vmstat [ \-fimst ] [ \-c count ] [ \-M core ] [ \-N system ]
! .ti +5
! [ \-w wait ] [ disks ]
! .ft R
! .fi
! .SH DESCRIPTION
! .I Vmstat
  reports certain kernel statistics kept about process, virtual memory,
  disk, trap and cpu activity.
! .PP
  The options are as follows:
! .TP
! \-c
  Repeat the display
! .I count
  times.
  The first display is for the time since a reboot and each subsequent report
  is for the time period since the last display.
  If no
! .I wait
  interval is specified, the default is 1 second.
! .TP
! \-f
  Report on the number
! .IR fork (2) ,
! .IR vfork (2)
  and
! .IR rfork (2)
  system calls since system startup, and the number of pages of virtual memory
  involved in each.
! .TP
! \-i
  Report on the number of interrupts taken by each device since system
  startup.
! .TP
! \-M
  Extract values associated with the name list from the specified core 
! instead of the default ``/dev/mem''.
! .TP
! \-N
  Extract the name list from the specified system instead of the default
! ``/bsd''.
! .TP
! \-m
  Report on the usage of kernel dynamic memory listed first by size of
  allocation and then by type of usage.
! .TP
! \-s
  Display the contents of the
! .I sum
  structure, giving the total number of several kinds of paging related
  events which have occurred since system startup.
! .TP
! \-t
  Report on the number of page in and page reclaims since system startup,
  and the amount of time required by each.
! .TP
! \-w
  Pause
! .I wait
  seconds between each display.
  If no repeat
! .I count
  is specified, the default is infinity.
! .PP
  By default,
! .I vmstat
! displays the following information:
! .PP
! .TP
! procs
  Information about the numbers of processes in various states.
! .sp
! .RS
! .nf
! r	in run queue
! b	blocked for resources (i/o, paging, etc.)
! w	runnable or short sleeper (< 20 secs) but swapped
! .fi
! .RE
! .TP
! memory
! Information about the usage of virtual and real memory.
! Virtual pages (reported in units of 1024 bytes) are considered active if
! they belong to processes which are running or have run in the last 20
! seconds.
! .sp
! .RS
! .nf
! avm	active virtual pages
! fre	size of the free list
! .fi
! .RE
! .TP
! page
  Information about page faults and paging activity.
  These are averaged each five seconds, and given in units per second.
! .sp
! .RS
! .nf
! re	page reclaims (simulating reference bits)
! at	pages attached (found in free list)
! pi	pages paged in
! po	pages paged out
! fr	pages freed per second
! de	anticipated short term memory shortfall
! sr	pages scanned by clock algorithm, per-second
! .fi
! .RE
! .TP
! disks
  Disk transfers per second.
  Typically paging will be split across the available drives.
  The header of the field is the first character of the disk name and
  the unit number.
  If more than four disk drives are configured in the system,
! .I vmstat
  displays only the first four drives.
  To force
! .I vmstat
  to display specific drives, their names may be supplied on the command line.
! .TP
! faults
  Trap/interrupt rate averages per second over last 5 seconds.
! .sp
! .RS
! .nf
! in	device interrupts per interval (including clock interrupts)
! sy	system calls per interval
! cs	cpu context switch rate (switches/interval)
! .fi
! .RE
! .TP
! cpu
  Breakdown of percentage usage of CPU time.
! .sp
! .RS
! .nf
! us	user time for normal and low priority processes
! sy	system time
! id	cpu idle
! .fi
! .RE
! .SH EXAMPLES
  The command ``vmstat -w 5'' will print what the system is doing every five
  seconds; this is a good choice of printing interval since this is how often
  some of the statistics are sampled in the system.
  Others vary every second and running the output for a while will make it
  apparent which are recomputed every second.
! .SH FILES
! .ta \w'/dev/mem  'u
! /bsd	default kernel namelist
! .br
! /dev/mem	default memory file
! .SH SEE ALSO
! .IR fstat (1),
! .IR netstat (1),
! .IR nfsstat (1),
! .IR ps (1),
! .IR systat (1),
! .IR iostat (8),
! .IR pstat (8)
  .sp
  The sections starting with ``Interpreting system activity'' in
! .IR "Installing and Operating 4.3BSD" .
! .SH BUGS
! The \-c and \-w options are only available with the default output.
--- 34,225 ----
  .\"
  .\"	@(#)vmstat.8	8.1 (Berkeley) 6/6/93
  .\"
! .Dd June 6, 1993
! .Dt VMSTAT 8
! .Os
! .Sh NAME
! .Nm vmstat
! .Nd report virtual memory statistics
! .Sh SYNOPSIS
! .Nm vmstat
! .Op Fl fimst
! .Nm vmstat
! .Op Fl c Ar count
! .Op Fl M Ar count
! .Op Fl N Ar system
! .Op Fl w Ar wait
! .Op disks
! .Sh DESCRIPTION
! .Nm vmstat
  reports certain kernel statistics kept about process, virtual memory,
  disk, trap and cpu activity.
! .Pp
  The options are as follows:
! .Bl -tag -width "blah"
! .It Fl c Ar count
  Repeat the display
! .Ar count
  times.
  The first display is for the time since a reboot and each subsequent report
  is for the time period since the last display.
  If no
! .Ar wait
  interval is specified, the default is 1 second.
! .It Fl f
  Report on the number
! .Xr fork 2 ,
! .Xr vfork 2 ,
  and
! .Xr rfork 2
  system calls since system startup, and the number of pages of virtual memory
  involved in each.
! .It Fl i
  Report on the number of interrupts taken by each device since system
  startup.
! .It Fl M Ar core
  Extract values associated with the name list from the specified core 
! instead of the default
! .Pa /dev/mem .
! .It Fl N Ar system
  Extract the name list from the specified system instead of the default
! .Pa /bsd .
! .It Fl m
  Report on the usage of kernel dynamic memory listed first by size of
  allocation and then by type of usage.
! .It Fl s
  Display the contents of the
! .Ar sum
  structure, giving the total number of several kinds of paging related
  events which have occurred since system startup.
! .It Fl t
  Report on the number of page in and page reclaims since system startup,
  and the amount of time required by each.
! .It Fl w Ar wait
  Pause
! .Ar wait
  seconds between each display.
  If no repeat
! .Ar count
  is specified, the default is infinity.
! .El
! .Pp
  By default,
! .Nm vmstat
! displays the following information just once:
! .Pp
! .Bl -tag -width "whatever"
! .It procs
  Information about the numbers of processes in various states.
! .Pp
! .Bl -inset -width xxxxxx -compact
! .It Ar r
! in run queue
! .It Ar b
! blocked for resources (i/o, paging, etc.)
! .It Ar w
! runnable or short sleeper (< 20 secs) but swapped
! .El
! .Pp
! .It Ar memory
! Information about the usage of virtual and real memory.  Virtual pages
! (reported in units of 1024 bytes) are considered active if they belong
! to processes which are running or have run in the last 20 seconds.
! .Pp
! .Bl -inset -width xxxxxx -compact
! .It Ar avm
! active virtual pages
! .It Ar fre
! size of the free list
! .El
! .Pp
! .It Ar page
  Information about page faults and paging activity.
  These are averaged each five seconds, and given in units per second.
! .Pp
! .Bl -inset -width xxxxxx -compact
! .It Ar re
! page reclaims (simulating reference bits)
! .It Ar at
! pages attached (found in free list)
! .It Ar pi
! pages paged in
! .It Ar po
! pages paged out
! .It Ar fr
! pages freed per second
! .It Ar de
! anticipated short term memory shortfall
! .It Ar sr
! pages scanned by clock algorithm, per-second
! .El
! .Pp
! .It Ar disks
  Disk transfers per second.
  Typically paging will be split across the available drives.
  The header of the field is the first character of the disk name and
  the unit number.
  If more than four disk drives are configured in the system,
! .Nm vmstat
  displays only the first four drives.
  To force
! .Nm vmstat
  to display specific drives, their names may be supplied on the command line.
! .Pp
! .It Ar faults
  Trap/interrupt rate averages per second over last 5 seconds.
! .Pp
! .Bl -inset -width xxxxxx -compact
! .It Ar in
! device interrupts per interval (including clock interrupts)
! .It Ar sy
! system calls per interval
! .It Ar cs
! cpu context switch rate (switches/interval)
! .El
! .Pp
! .It Ar cpu
  Breakdown of percentage usage of CPU time.
! .Pp
! .Bl -inset -width xxxxxx -compact
! .It Ar us
! user time for normal and low priority processes
! .It Ar sy
! system time
! .It Ar id
! cpu idle
! .El
! .El
! .Pp
! .Sh EXAMPLES
  The command ``vmstat -w 5'' will print what the system is doing every five
  seconds; this is a good choice of printing interval since this is how often
  some of the statistics are sampled in the system.
  Others vary every second and running the output for a while will make it
  apparent which are recomputed every second.
! .Sh FILES
! .Bl -tag -width /etc/networks -compact
! .It Pa /bsd
! Default kernel namelist
! .It Pa /dev/mem
! Default memory file
! .El
! .Pp
! .Sh SEE ALSO
! .Xr fstat 1 ,
! .Xr netstat 1 ,
! .Xr nfsstat 1 ,
! .Xr ps 1 ,
! .Xr systat 1 ,
! .Xr iostat 8 ,
! .Xr pstat 8
  .sp
  The sections starting with ``Interpreting system activity'' in
! .Xr "Installing and Operating 4.3BSD" .
! .Sh BUGS
! The
! .Fl c
! and
! .Fl w
! options are only available with the default output.
! .Pp
! This manual page lacks an incredible amount of detail.