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MONITOR(1)							    MONITOR(1)

NAME
       monitor - display system activity

SYNOPSIS
       monitor [ collection ] [ display ] [ data ] [ options ]

DESCRIPTION
       Monitor is a program for collecting data on system activity.  Depending
       on the options chosen this data can be displayed or saved in a file for
       later  review.	Monitor	 allows the user to select the data collection
       mode, display mode and the data to be collected.

       Live, replay and names are the currently	 supported  collection	modes.
       In  live mode the data is collected from the running system.  In replay
       mode the data is read from a file created by an earlier run of monitor.
       Names  is  a  special collection mode that prints what it can about the
       system configuration.  The other	 options,  data	 options  and  display
       modes have no effect on this option.

       The  currently  supported display modes are save, read, and screen.  In
       save mode the data is collected and written to a file.  The  format  of
       this  file is documented in the monitor(5) manual page.	In screen mode
       the data is formatted according to the data options  and	 displayed  on
       the  user's  terminal  using curses(3).	The display mode read dumps in
       textual form the contents of collected records.

   Data Options
       The currently supported data options are listed below.  All the options
       may be abbreviated to the shortest unique string.  When monitor sees an
       ambigious argument it provides a list of the matching  options  in  the
       error message.

       cache	   Buffer and namei cache statistics.

       cpu	   Time in CPU states, context switches, etc.

       tty	   TTY input and output counts.

       disk	   Disk I/O data.

       free	   Free memory measured in Kilobytes.

       fork	   Fork and vfork counts.

       page	   Paging information.

       swap	   Swap space utilization.

       users	   Number of users logged on.

       netif	   Network interface data.

       memory	   Memory utilization.

       loadave	   The load average.

       Some  data  options  cause  groups  of previous data options to be col‐
       lected.

       io     Disk, Network interfaces and tty data.

       os     CPU, fork, paging and memory statistics.

       mon    Everything.

       all    Everything.

       Some data options allow further selection on a unit basis.   These  are
       cpu, disk and netif.  The format of these options is:

	  data-option=unit[,unit]

       Examples:

	  netif=de0,dmc0
	  disk=ra0,ra2,hp0

   Screen Commands
       When  monitor  runs  in screen mode a number of commands can be used to
       control the display.

       ^L     Redraw the screen.

       r      Redraw the screen.

       q      Quit, same as Exit.

       e      Exit, same as Quit.

       p      Pause the session.

       h      Help.

       ?      Help.

       d      Dump a copy of the screen to screen.dump.	 If the -output option
	      is used the filename given will be used.

       m      Magnify a data record.

       u      Unmagnify - return to the normal display.

OPTIONS
       -help  Print a help listing.

       -magnify data-option
	      The  magnify  function  for  the	selected  data	option is used
	      instead of the normal screen function.

       -file file
	      In save mode, save the output in file.

       -output file
	      File to be used for screen dumps.

       -prompt prompt
	      Set the screen mode prompt to prompt.

       -sleep #
	      Sleep for # seconds between samples.

       -total When disk is a selected data option in screen  mode,  print  the
	      I/O totals.

       -version
	      Print the version string and exit.

       -sample
	      The first and sample data records are enabled for magnification.

DEFAULTS
       ───────────────────────────────────────────────────────────────────
       Option	    Default
       ───────────────────────────────────────────────────────────────────
       display	    screen
       collection   live
       data	    all
       prompt	    monitor>
       file	    monitor.dat
       output	    screen.dump
       sleep	    10 minutes in save, dependent on tty speed in screen.
       ───────────────────────────────────────────────────────────────────

       ────────────────────────
       Baud rate   Update time
       ────────────────────────
       > 9600	   2 seconds
	 4800	   3 seconds
	 2400	   3 seconds
	 1200	   5 seconds
	  300	   8 seconds
       ────────────────────────

FILES
       /dev/kmem, /vmunix, screen.dump, monitor.dat

       /vmunix	is  used  to  obtain  the  name	 list  of  the running kernel.
       /dev/kmem is used to collect the system performance data.

DIAGNOSTICS
       Please see chapter 5 of the Long Awaited Monitor User's Guide.

SEE ALSO
       The  sections  starting	with  ``Interpreting  system   activity''   in
       Installing  and Operating 4.2bsd.  The version of the configuration and
       tuning guide for the particular version of the operating	 system.   The
       title varies somewhat by release.

RESTRICTIONS
       The current version of monitor was not designed to run as a setuid pro‐
       gram.  It needs read access to /dev/kmem and  can  be  run  setgid  for
       group  kmem,  as long as no interesting files are given write access by
       group kmem.

BUGS
       The names support in V5 uses the V4 style device names and may generate
       the  wrong  name	 for  Wide16 SCSI devices taking full advantage of the
       feature.	 Data for the cache option collected on V4 earlier may display
       inaccurately on V5.  The same is true of cache data collected on V5 and
       displayed on V4.

								    MONITOR(1)
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