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Diff for /src/usr.bin/vmstat/vmstat.8 between version 1.32 and 1.33

version 1.32, 2005/06/23 14:32:48 version 1.33, 2005/06/29 00:38:18
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 .Op Fl M Ar core  .Op Fl M Ar core
 .Op Fl N Ar system  .Op Fl N Ar system
 .Op Fl w Ar wait  .Op Fl w Ar wait
 .Op Ar disks  .Op Ar disk ...
 .Sh DESCRIPTION  .Sh DESCRIPTION
 .Nm  .Nm
 reports certain kernel statistics kept about process, virtual memory,  reports certain kernel statistics kept about process, virtual memory,
 disk, trap and CPU activity.  disk, trap, and CPU activity.
   The default behavior is to print a one-line summary of these statistics.
   The
   .Fl c
   and
   .Fl w
   flags may be used to continually report summaries.
 .Pp  .Pp
 The options are as follows:  The options are as follows:
 .Bl -tag -width Ds  .Bl -tag -width Ds
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 .It Fl f  .It Fl f
 Report on the number of  Report on the number of
 .Xr fork 2 ,  .Xr fork 2 ,
 .Xr rfork 2  .Xr rfork 2 ,
 and  and
 .Xr vfork 2  .Xr vfork 2
 system calls as well as kernel thread creations since system startup,  system calls as well as kernel thread creations since system startup,
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 Extract the name list from the specified system instead of the running kernel.  Extract the name list from the specified system instead of the running kernel.
 .It Fl s  .It Fl s
 Display the contents of the  Display the contents of the
 .Ar sum  .Va uvmexp
 structure, giving the total number of several kinds of paging related  structure (see
   .Xr uvm 9 ) ,
   giving the total number of several kinds of paging related
 events which have occurred since system startup.  events which have occurred since system startup.
 .It Fl t  .It Fl t
 Report on the number of page in and page reclaims since system startup,  Report on the number of page in and page reclaims since system startup,
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 By default,  By default,
 .Nm  .Nm
 displays the following information just once:  displays the following information just once:
 .Bl -tag -width "whatever"  .Bl -tag -width Ds
 .It Ar procs  .It Li procs
 Information about the numbers of processes in various states.  Information about the numbers of processes in various states.
 .Pp  .Pp
 .Bl -inset -width xxxxxx -compact  .Bl -tag -width 4n -compact
 .It Ar r  .It Li r
 in run queue  in run queue
 .It Ar b  .It Li b
 blocked for resources (i/o, paging, etc.)  blocked for resources (I/O, paging, etc.)
 .It Ar w  .It Li w
 runnable or short sleeper (< 20 secs) but swapped  runnable or short sleeper (< 20 secs) but swapped
 .El  .El
 .Pp  .It Li memory
 .It Ar memory  
 Information about the usage of virtual and real memory.  Information about the usage of virtual and real memory.
 Virtual pages  Virtual pages
 (reported in units of 1024 bytes) are considered active if they belong  (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.  to processes which are running or have run in the last 20 seconds.
 .Pp  .Pp
 .Bl -inset -width xxxxxx -compact  .Bl -tag -width 4n -compact
 .It Ar avm  .It Li avm
 active virtual pages  active virtual pages
 .It Ar fre  .It Li fre
 size of the free list  size of the free list
 .El  .El
 .Pp  .It Li page
 .It Ar page  
 Information about page faults and paging activity.  Information about page faults and paging activity.
 These are averaged each five seconds, and given in units per second.  These are averaged each five seconds, and given in units per second.
 .Pp  .Pp
 .Bl -tag -width flt -compact  .Bl -tag -width 4n -compact
 .It Ar flt  .It Li flt
 page faults  page faults
 .It Ar re  .It Li re
 page reclaims (simulating reference bits)  page reclaims (simulating reference bits)
 .It Ar at  .It Li at
 pages attached (found in free list)  pages attached (found in free list)
 .It Ar pi  .It Li pi
 pages paged in  pages paged in
 .It Ar po  .It Li po
 pages paged out  pages paged out
 .It Ar fr  .It Li fr
 pages freed  pages freed
 .It Ar sr  .It Li sr
 pages scanned by clock algorithm  pages scanned by clock algorithm
 .El  .El
 .Pp  .It Li disks
 .It Ar disks  
 Disk transfers per second.  Disk transfers per second.
 Typically paging will be split across the available drives.  Typically paging will be split across the available drives.
 The header of the field is the first character of the disk name and  The header of the field is the first character of the disk name and
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 To force  To force
 .Nm  .Nm
 to display specific drives, their names may be supplied on the command line.  to display specific drives, their names may be supplied on the command line.
 .Pp  .It Li traps
 .It Ar traps  
 Trap/interrupt rate averages per second over last 5 seconds.  Trap/interrupt rate averages per second over last 5 seconds.
 .Pp  .Pp
 .Bl -inset -width xxxxxx -compact  .Bl -tag -width 4n -compact
 .It Ar int  .It Li int
 device interrupts per interval (including clock interrupts)  device interrupts per interval (including clock interrupts)
 .It Ar sys  .It Li sys
 system calls per interval  system calls per interval
 .It Ar cs  .It Li cs
 \ \&CPU context switch rate (switches/interval)  CPU context switch rate (switches/interval)
 .El  .El
 .Pp  .It Li cpu
 .It Ar cpu  
 Breakdown of percentage usage of CPU time.  Breakdown of percentage usage of CPU time.
 .Pp  .Pp
 .Bl -inset -width xxxxxx -compact  .Bl -tag -width 4n -compact
 .It Ar us  .It Li us
 user time for normal and low priority processes  user time for normal and low priority processes
 .It Ar sy  .It Li sy
 system time  system time
 .It Ar id  .It Li id
 CPU idle  CPU idle
 .El  .El
 .El  .El
   .Sh FILES
   .Bl -tag -width Pa -compact
   .It Pa /bsd
   default kernel image
   .It Pa /dev/kmem
   default memory file
   .El
 .Sh EXAMPLES  .Sh EXAMPLES
 The command  The command
 .Ic vmstat -w 5  .Ic vmstat -w 5
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 .Xr ps 1 ,  .Xr ps 1 ,
 .Xr systat 1 ,  .Xr systat 1 ,
 .Xr iostat 8 ,  .Xr iostat 8 ,
 .Xr pstat 8  .Xr pstat 8 ,
 .Pp  .Xr uvm 9
 The sections starting with  
 .Dq Interpreting system activity  
 in  
 .%T "Installing and Operating 4.3BSD" .  
 .Sh BUGS  .Sh BUGS
 The  The
 .Fl c  .Fl c
Legend:
Removed from v.1.32  
changed lines
  Added in v.1.33