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RedHat 9 (Linux i386) - man page for gkrellm (redhat section 1)

gkrellm(1)				  User's Manual 			       gkrellm(1)

       gkrellm - The GNU Krell Monitors

       gkrellm	[  --help  ] [ -t | --theme dir ] [ -g | --geometry +x+y ] [ -wm ] [ -w | --with-
       drawn ] [ -c | --config suffix ] [ -nc ] [ -f | --force-host-config ] [ -demo  ]  [  -p	|
       --plugin plugin.so ] [ -s | --server hostname ] [ -P | --port server_port ]

       With  a	single	process,  gkrellm manages multiple stacked monitors and supports applying
       themes to match the monitors appearance to your window manager, Gtk, or any other theme.

       o   SMP CPU, Disk, Proc, and active net interface monitors with LEDs.

       o   Internet monitor that displays current and charts historical port hits.

       o   Memory and swap space usage meters and a system uptime monitor.

       o   File system meters show capacity/free space and can mount/umount.

       o   A mbox/maildir/MH/POP3/IMAP mail monitor which can launch a mail reader or remote mail
	   fetch program.

       o   Clock/calendar and hostname display.

       o   Laptop Battery monitor.

       o   CPU/motherboard  temperature/fan/voltages  display  with  warnings  and alarms.  Linux
	   requires lm_sensors modules and Windows requires MBM.

       o   Multiple monitors managed by a single process to reduce system load.

       o   A timer button that can execute PPP or ISDN logon/logoff scripts.

       o   Charts are autoscaling with configurable grid line resolution, or

       o   can be set to a fixed scale mode.

       o   Separate colors for "in" and "out" data.  The in color is used for CPU user time, disk
	   read,  forks,  and  net  receive  data.   The out color is used for CPU sys time, disk
	   write, load, and net transmit data.

       o   Commands can be configured to run when monitor labels are clicked.

       o   Data can be collected from a gkrellmd server running on a remote machine.

       o   gkrellm is plugin capable so special interest monitors can be created.

       o   Many themes are available.

       o Top frame

	      Btn 1  Press and drag to move gkrellm window

	      Btn 3  Popup menu for user config window

       o Side frames

	      Btn 2  Slide gkrellm window shut (Btn1 if -m2 option)

	      Btn 3  Popup menu for user config window

       o All charts

	      Btn 1  Toggle draw of extra info on the chart.

	      Btn 3  Brings up a chart configuration window.

       o Inet charts

	      Btn 2  Toggle between port hits per minute and hour.

       o Most panels

	      Btn 3  Opens the configuration window directly to a monitor's configuration page.

       o File System meter panels

	      Btn 1  On the label, Toggle visibility of secondary fs monitors.	On the mount but-
		     ton, run the mount/umount commands.

	      Btn 2  Toggle display of label and fs capacity scrolling display.

       o Mem and Swap meter panels

	      Btn 2  Toggle display of label and memory or swap capacity scrolling display.

       o Mailbox monitor message count button

	      Btn 1  Launch  a	mail reader program.  If options permit, also stop animations and
		     reset remote message counts.

	      Btn 2  Toggle mail check mute mode which inhibits the  sound  notify  program,  and
		     optionally inhibits all mail checking.

       o Mailbox monitor envelope decal

	      Btn 1  Force a mail check regardless of mute or timeout state.

       o Battery monitor panel

	      Btn 1  On the charging state decal toggles battery minutes left, percent level, and
		     charge rate display.

	      Btn 2  Anywhere on the panel also toggles the display.

       o Keyboard shortcuts

	      F1     popup the user config window.

		     previous theme or theme alternative.

		     next theme or theme alternative.

		     previous theme, skipping any theme alternatives.

		     next theme, skipping any theme alternatives.

       If a command has been configured to be launched for a monitor, then a button  will  appear
       when the mouse enters the panel of that monitor.  Clicking the button will launch the com-

       A right button mouse click on the side or top frames of the gkrellm window will pop  up	a
       user  configuration  window  where  you can configure all the builtin and plugin monitors.
       Chart appearance may be configured by right clicking on a chart,  and  right  clicking  on
       many  panels  will  open  the configuration window directly to the corresponding monitor's
       configuration page.

       --help Displays this manual page.

       -t, --theme dir
	      gkrellm will load all theme image files it finds in dir  and  parse  the	gkrellmrc
	      file  if	one exists.  This option overrides the loading of the last theme you con-
	      figured to be loaded in the Themes configuration window.	 Theme	changes  are  not
	      saved when gkrellm is run with this option.

       -g, --geometry +x+y
	      Makes gkrellm move to an (x,y) postition on the screen at startup.  Standard X win-
	      dow geometry position (not size) formats	are  parsed,  ie  +x+y	-x+y  +x-y  -x-y.
	      Except, negative geometry positions are not recognized (ie +-x--y ).

       -wm    Forces gkrellm to start up with window manager decorations.  The default is no dec-
	      orations because there are themed borders.

       -w, --withdrawn
	      gkrellm starts up in withdrawn mode so it can go into the Blackbox slit (and  maybe
	      WindowMaker dock).

       -c, --config suffix
	      Use  alternate  config  files  generated	by appending suffix to config file names.
	      This overrides any previous host config which may have been setup  with  the  below

       -f, --force-host-config
	      If  gkrellm  is  run  once  with this option and then the configuration or theme is
	      changed, the config files that are written will have a -hostname appended to  them.
	      Subsequent runs will detect the user_config-hostname and gkrellm_theme.cfg-hostname
	      files and use them instead of the normal configuration files (unless  the  --config
	      option  is specified).   This is a convenience for allowing remote gkrellm indepen-
	      dent config files in a shared home directory, and for the hostname to  show  up  in
	      the X title for window management.  This option has no effect in client mode.

       -s, --server hostname
	      Run  in  client mode by connecting to and collecting data from a gkrellmd server on

       -P, --port server_port
	      Use server_port for the gkrellmd server connection.

       -nc    No config mode.  The config menu is blocked so no config changes can be made.  Use-
	      ful  in certain environments, or maybe for running on a xdm(1) login screen or dur-
	      ing a screensaver mode?

       -demo  Force enabling of many monitors so themers can see everything. All config saving is

       -p, --plugin plugin.so
	      For  plugin  development,  load  the command line specified plugin so you can avoid
	      repeated install steps in the development cycle.

       The default for most charts is to automatically adjust the number of grid lines drawn  and
       the  resolution	per  grid  so  drawn data will be nicely visible.  You may change this to
       fixed grids of 1-5 and/or fixed grid resolutions in the chart configuration windows.  How-
       ever, some combination of the auto scaling modes may give best results.

       Auto number of grids:
       This  means  to scale the chart to draw as many grids as is necessary to show all the data
       on the chart without clipping.

       Auto grid resolution has two meanings:
       1) If using a fixed number of grids, it means to set the resolution per grid to the small-
       est value in a base to peak range that draws data without clipping.  The peak is the maxi-
       mum data value encountered and the base is 1/5 the peak.

       2) If using auto number of grids, it means to set the resolution per grid to a value  such
       that drawing the peak value encountered requires at least 5 grids to be drawn.

   CPU Monitor
       Data  is plotted as a percentage.  In auto number of grids mode, resolution is a fixed 20%
       per grid.  In fixed number of grids mode, grid resolution is 100% divided by the number of

   Proc Monitor
       The  krell shows process forks with a full scale value of 10 forks.  The chart has a reso-
       lution of 10 forks/sec per grid in auto number of grids mode and 50  forks/second  maximum
       on  the chart in fixed number of grids mode.  The process load resolution per grid is best
       left at 1.0 for auto number of grids, but can be set as high as 5  if  you  configure  the
       chart to have only 1 or 2 fixed grids.

   Net Monitor
       gkrellm	is  designed to display a chart for net interfaces which are up, which means they
       are listed in the routing table (however, it is possible in some cases to monitor unrouted
       interfaces).   One net interface may be linked to a timer button which can be used to con-
       nect and disconnect from an ISP.

       The timer button shows an off, standby, or on state by  a  distinctive  (color  or  shape)

       ppp    Standby  state is while the modem phone line is locked while ppp is connecting, and
	      the on state is the ppp link connected.  The phone line lock is determined  by  the
	      existence  of the modem lock file /var/lock/LCK..modem, which assumes pppd is using
	      /dev/modem.  However, if your pppd setup does not use /dev/modem, then you can con-
	      figure an alternative with:

	      ln  -s  /var/lock/LCK..ttySx   ~/.gkrellm2/LCK..modem

	      where ttySx is the tty device your modem does use.  The ppp on state is detected by
	      the existence of /var/run/pppX.pid and the time stamp of this file is the base  for
	      the on line time.

       ippp   The timer button standby state is not applicable to isdn interfaces that are always
	      routed. The on state is isdn on line while the ippp interface is	routed.   The  on
	      line timer is reset at transitions from isdn hangup state to on line state.

       For  both ppp and ippp timer button links, the panel area of the interface is always shown
       and the chart appears when the interface is routed with the phone  link	connected  or  on
       line.  The timer button Start Command must run in the background and this is automatically
       the default for many ppp logon scripts. A couple of exceptions are wvdial and  kppp  which
       need to be explicitly backgrounded:

	      wvdail &


	      kppp -c Foo &

       and the timer button Stop Command in these cases could be:

	      skill -c wvdial


	      kppp -k

       Otherwise do not append the "&" on ppp Start Command entries that background themselves.

       If  the	timer button is not linked to a net interface, then it can be used as a push on /
       push off timer

       Net monitors can have a label so that the interface can be associated with the identity of
       the  other  end	of the connection.  This is useful if you have several net connections or
       run multiple remote gkrellm programs.  It can be easier to keep track of who is	connected
       to who.

   Mem and Swap Monitor
       Here  you are reading a ratio of total used to total available.	The amount of memory used
       indicated by the memory monitor is actually a calculated "used" memory.	If you enter  the
       "free"  command,  you  will see that most of your memory is almost always used because the
       kernel uses large amounts for buffers and cache.  Since the kernel can free a lot of  this
       memory  as  user  process demand for memory goes up, a more realistic reading of memory in
       use is obtained by subtracting the buffers and cached  memory  from  the  kernel  reported
       used.   This  is  shown in the free command output in the "-/+ buffers/cache" line where a
       calculated used amount has buffers and cached memory subtracted from the  kernel  reported
       used memory, and a calculated free amount has the buffers and cached memory added in.

       While  the  memory  meter always shows the calculated "used" memory, the raw memory values
       total, shared, buffered, and cached may be optionally displayed in  the	memory	panel  by
       entering an appropriate format display string in the config.

       Units:  All memory values have units of binary megabytes (MiB).	Memory sizes have histor-
       ically been reported in these units because memory arrays on silicon have always increased
       in size by multiples of 2.  Add an address line to a memory chip and you double or quadru-
       ple (a multiplexed address) the memory size.  A binary megabyte is 2^20 or 1048576.   Con-
       trast  this with units for other stats such as disk capacities or net transfer rates where
       the proper units are decimal  megabytes	or  kilobytes.	 Disk  drive  capacities  do  not
       increase  by  powers  of  2 and manufacturers do not use binary units when reporting their
       sizes.  However, some of you may prefer to see a binary disk drive capacity  reported,  so
       it is available as an option.

   Internet Monitor
       Displays  TCP  port  connections  and  records  historical port hits on a minute or hourly
       chart.  Middle button click on an inet chart to toggle between the minute and hourly  dis-
       plays.	There  is  a strip below the minute or hour charts where marks are drawn for port
       hits in second intervals.  Each inet krell also shows port hits with a full scale range of
       5 hits.	The left button toggle of extra info displays current port connections.

       For  each  internet monitor you can specify two labeled datasets with one or two ports for
       each dataset.  There are two ports because some internet ports are related and  you  might
       want  to  group	them - for example, the standard http port is 80, but there is also a www
       web caching service on port 8080.  So it makes sense to have a http monitor which combines
       data from both ports.  A possible common configuration would be to create one inet monitor
       that monitors http hits plotted in one color and ftp hits in another.  To do  this,  setup
       in the Internet configuration tab:

	      http  80 8080    ftp  21

       Or  you	could create separate monitors for http and ftp.  Other monitors might be smtp on
       port 25 or nntp on port 119.

       If you check the "Port0 - Port1 is a range" button, then all of the ports between the  two
       entries	will  be  monitored.   Clicking the small button on the Inet panels will pop up a
       window listing the currently connected port numbers and the host that is connected to it.

       gkrellm samples TCP port activity once per second, so it is possible for port hits lasting
       less than a second to be missed.

   File System Monitor
       File system mount points can be selected to be monitored with a meter that shows the ratio
       of blocks used to total blocks available.  Mounting commands  can  be  enabled  for  mount
       points in one of two ways:

       If  a  mount  point  is in your /etc/fstab and you have mount permission then mount(8) and
       umount(8) commands can be enabled and executed for that mount point simply by checking the
       "Enable	/etc/fstab  mounting"  option.	 Mount	table entries in /etc/fstab must have the
       "user" or "owner" option set to grant this permission unless gkrellm is run as root.   For
       example, if you run gkrellm as a normal user and you want to be able to mount your floppy,
       your /etc/fstab could have either of:

	      /dev/fd0 /mnt/floppy  ext2 user,noauto,rw,exec  0  0
	      /dev/fd0 /mnt/floppy  ext2 user,defaults	0  0

       If gkrellm is run as root or if you have sudo(1) permission to run the mount(8)	commands,
       then  a	custom	mount  command	can  be  entered  into	the "mount command" entry box.	A
       umount(8) command must also be entered if you  choose  this  method.   Example  mount  and
       umount entries using sudo:

	      sudo /bin/mount -t msdos /dev/fd0 /mnt/A
	      sudo /bin/umount /mnt/A

       Notes:  the  mount point specified in a custom mount command (/mnt/A in this example) must
       be the same as entered in the "Mount Point" entry.  Also, you  should  have  the  NOPASSWD
       option set in /etc/sudoers for this.

       File  system monitors can be created as primary (always visible) or secondary which can be
       hidden and then shown when they are of interest.  For example, you might make primary file
       system monitors for root, home, or user so they will be always visible, but make secondary
       monitors for less frequently used mount points such as  floppy,	zip,  backup  partitions,
       foreign file system types, etc.	Secondary FS monitors can also be configured to always be
       visible if they are mounted by checking the "Show if mounted" option.   Using this feature
       you  can  show  the  secondary group, mount a file system, and have that FS monitor remain
       visible even when the secondary group is hidden.  A standard cdrom mount will show as 100%
       full  but  a  monitor  for  it  could  be  created  with mounting enabled just to have the
       mount/umount convenience.

       When the "Ejectable" option is selected for a file system, an  eject  button  will  appear
       when  the mouse enters the file system panel.  If you are not using /etc/fstab mounting, a
       device file to eject will also need to be entered.  Systems may	have  varying  levels  of
       support for this feature ranging from none or basic using an ioctl() to full support using
       an eject command to eject all its supported devices.   Linux and NetBSD	use  the  "eject"
       command	while  FreeBSD	uses  the  "cdcontrol"	command,  so  be  sure these commands are
       installed.  Most eject commands will also support closing a CDROM tray.	If they  do,  you
       will be able to access this function by right clicking the eject button.

   Mail Monitor
       Checks your mailboxes for unread mail. A mail reading program (MUA) can be executed with a
       left mouse click on the mail monitor panel button, and a mail notify (play a  sound)  pro-
       gram  such  as  esdplay or artsplay can be executed whenever the new mail count increases.
       The mail panel envelope decal may also be clicked to force an immediate mail check at  any

       gkrellm	is  capable of checking mail from local mailbox types mbox, MH, and maildir,  and
       from remote mailbox types POP3 and IMAP.

       POP3 and IMAP checking can use non-standard port numbers and password authentication  pro-
       tocols  APOP (for POP3 only) and CRAM-MD5 may be selected as long as your mail server sup-
       ports them.

       Before internal POP3 and IMAP checking was added, an  external  mail  fetch/check  program
       could be set up to be executed periodically to download or check remote POP3 or IMAP mail.
       This method is still available and must be used if you want gkrellm to be able to download
       remote mail to local mailboxes because the builtin checking functions cannot download.

   Battery Monitor
       This  meter  will  be  available if a battery exists and will show battery percentage life
       remaining.  A decal indicates if AC line is connected or if the battery is in use.  If the
       data  is  available,  time  remaining  may  be displayed as well as the percentage battery
       level. If the time remaining is not available or is inaccurate, the Estimate  Time  option
       may  be	selected  to  display a battery time to run or time to charge which is calculated
       based on the current battery percent level, user supplied typical  battery  times,  and	a
       default	linear	extrapolation  model.	For  charging, an exponential charge model may be

       A battery low level warning and alarm alert may be set.	If battery time is not	available
       from the OS and the estimate time mode is not set, the alert units will be battery percent
       level.  Otherwise the alert units will be battery time left in  minutes.   If  OS  battery
       time  is  not  available  and  the estimate time mode is set when an alert is created, the
       alert will have units of time  left  in	minutes  and  the  alert  will	automatically  be
       destroyed if the estimate time option is subsequently turned off.

   CPU/Motherboard Sensors - Temperature, Voltages, and Fan RPM
       For  sensor monitoring on Linux, you must have lm_sensor modules installed in your running
       kernel which is beyond the scope of this README, so  see  http://www2.lm-sensors.nu/~lm78/
       for  information.   Sensor data is read from /proc/sys/dev/sensors and there is no linking
       to the lm_sensor libraries.

       Similarly, Windows requires a MBM install: http://mbm.livewiredev.com/.

       FreeBSD and NetBSD provide builtin sensor reporting for some sensor  chips.   NetBSD  uses
       the  envsys(4) interface and sensors reading is automatically enabled if you have either a
       lm(4) or viaenv(4) chip configured in your kernel.

       Temperature and fan sensor displays may be optionally located on the CPU or Proc panels to
       save  some  vertical space while voltages are always displayed on their own panel.  If you
       set up to monitor both a temperature and a fan on a single CPU or Proc panel, they can  be
       displayed  optionally  as an alternating single display or as separate displays.  If sepa-
       rate, the fan display will replace the panel label.  The configuration for this	is  under
       the CPU and Proc config pages.

       In the Setup page for the Sensors config you also enter any correction factors and offsets
       for each of the sensors you are monitoring.  For Linux, default values  are  automatically
       provided  for many sensor chips, but if they are not correct you should review the lm_sen-
       sor documentation.  See below for an explanation of converting lm_sensor compute lines  to
       gkrellm	correction  factors  and offsets.  For Windows, MBM internally handles the sensor
       corrections and no config entries should be required.

       Note for NetBSD users:
	      The current implementation of the sensor reading under NetBSD opens /dev/sysmon and
	      never  closes it. Since that device does not support concurrent accesses, you won't
	      be able to run other apps such as envstat(8) while GKrellM is running.  This  might
	      change if this happens to be an issue.

	      The  reasons  for  this  choice  are  a) efficiency (though it might be possible to
	      open/close /dev/sysmon each time a reading  is  needed  without  major  performance
	      issue) and b) as of october 2001, there's a bug in the envsys(4) driver which some-
	      times causes deadlocks when processes  try  to  access  simultaneoulsy  /dev/sysmon
	      (see NetBSD PR#14368). A (quick and dirty) workaround for this is to monopolize the
	      driver :)

   CPU/Motherboard Temperatures
       Most modern motherboards will not require setting temperature correction factors and  off-
       sets  other  than the defaults.	However, for lm_sensors it is necessary to have a correct
       "set sensor" line in /etc/sensors.conf if the temperature sensor type is  other	than  the
       default thermistor.

       On the other hand, some motherboards may need temperature calibration by setting a correc-
       tion factor and offset for each temperature sensor because of factors such  as  variations
       in  physical  thermistor contact with the CPU.  Unfortunately, this calibration may not be
       practical or physically possible because it requires that somehow you can get a	real  CPU
       temperature reading.  So, the calibration discussion which follows should probably be con-
       sidered an academic exercise that might give you some good (or bad) ideas.

       Anyway, to do this calibration, take two real CPU temperature  readings	corresponding  to
       two  sensor reported readings.	To get the real readings, you can trust that your mother-
       board manufacturer has done this calibration and is reporting accurate temperatures in the
       bios,  or  you  can  put  a temperature probe directly on your CPU case (and here is where
       things get impractical).

       Here is a hypothetical CPU calibration procedure.  Make sure gkrellm  is  configured  with
       default factors of 1.0 and offsets of 0 and is reporting temperatures in centigrade:

       1 o    Power  on the machine and read a real temperature T1 from the bios or a temperature
	      probe.  If reading from the bios, proceed with booting the OS.  Now record a sensor
	      temperature S1 as reported by gkrellm.

       2 o    Change  the  room  temperature environment (turn off your AC or change computer fan
	      exhaust speed).  Now repeat step 1, this time recording a real temperature  T2  and
	      gkrellm reported sensor temperature S2.

       3 o    Now  you	can calculate the correction factor and offset you need to enter into the
	      Sensor configuration tab:


	      s - S1	 t - T1
	      ------  =  ------
	      S2 - S1	 T2 - T1

		       T2 - T1	   S2*T1 - S1*T2
	      t  = s * -------	+  -------------
		       S2 - S1	       S2 - S1


			T2 - T1 	       S2*T1 - S1*T2
	      factor =	-------      offset =  -------------
			S2 - S1 		  S2 - S1

   Voltage Sensor Corrections
       You need to read this section only if you think the default voltage correction factors and
       offsets	are  incorrect.   For Linux and lm_sensors this would be if gkrellm does not know
       about your particular sensor chip.  For MBM with Windows, the  default  values  should  be

       Motherboard  voltage  measurements are made by a variety of sensor chips which are capable
       of measuring a small positive voltage.  GKrellM can display these voltage values  and  can
       apply  a  correction factor, offset, and for the negative voltages of some chips (lm80), a
       level shifting reference voltage to the displayed voltage.  There are four cases  to  con-

       1 o    Low  valued  positive  voltages  may be directly connected to the input pins of the
	      sensor chip and therefore need no correction.  For  these,  the  correction  factor
	      should be 1.0 and the offset should be 0.

       2 o    Higher  valued  positive voltages will be connected to the input pins of the sensor
	      chip through a 2 resistor attenuation circuit.  For these,  the  correction  factor
	      will be a ratio of the resistor values and the offset will be 0.

       3 o    Negative	voltages  will	be  connected to the input pins of the sensor through a 2
	      resistor attenuation circuit with one of the  resistors  connected  to  a  positive
	      voltage  to  effect a voltage level shift.  For these (lm80), the correction factor
	      and offset will be ratios of the resistor values, and a reference voltage  must  be

       4 o    Some  sensor  chips  (w83782,  lm78) are designed to handle negative inputs without
	      requiring an input resistor connected to a voltage  reference.   For  these,  there
	      will be a correction factor and a possible offset.

	      For cases 2 and 3, the sensor chip input network looks like:

		  Vs o----/\/\/---o-------------o Vin
			   R1	  |
				  o--/\/\/--o Vref


	      Vs     is the motherboard voltage under measurment

	      Vin    is  the  voltage  at  the	input pin of the sensor chip and therefore is the
		     voltage reading that will need correction.

	      Vref   is a level shifting voltage reference.  For case 2, Vref is ground or  zero.
		     For case 3, Vref will be one of the positive motherboard voltages.

       The  problem  then is to compute correction factors and offsets as a function of R1 and R2
       so that GKrellM can display a computed motherboard voltage Vs as a function of a  measured
       voltage Vin.

       Since  sensor  chip input pins are high impedance, current into the pins may be assumed to
       be zero.  In that case, the current through R1 equals current through R2, and we have:

		  (Vs - Vin)/R1 = (Vin - Vref)/R2

	      Solving for Vs as a function of Vin:

		  Vs = Vin * (1 + R1/R2)  -  (R1/R2) * Vref

	      So, the correction factor is:  1 + R1/R2
		  the correction offset is:  - (R1/R2)
		  Vref is specified in the config separately from
		  the offset (for chips that need it).

       Fortunately there seems to be a standard set of resistor values used for the various  sen-
       sor chips which are documented in the lm_sensor documentation.  The GKrellM sensor correc-
       tions are similar to the compute lines you find with lm_sensors, with the difference  that
       lm_sensors  has	an expression evaluator which does not require that compute lines be sim-
       plified to the single factor and offset required by GKrellM.  But you can easily calculate
       the factor and offset.  For example, this lm_sensor compute line for a case 2 voltage:

		  compute in3 ((6.8/10)+1)*@ ,	@/((6.8/10)+1)

       yields a correction factor of ((6.8/10)+1) = 1.68 and an offset of zero.

       Note  that  the second compute line expression is not relevant in GKrellM because there is
       never any need to invert the voltage reading calculation.  Also, the compute line '@' sym-
       bol represents the Vin voltage.

       A more complicated compute line for a case 3 voltage:

		  compute in5 (160/35.7)*(@ - in0) + @, ...

	      can be rewritten:

		  compute in5 (1 + 160/35.7)*@ - (160/35.7)*in0, ...

	      so the correction factor is  (1 + 160/35.7) = 5.48
	      and the correction offset is -(160/35.7) = -4.48
	      and the voltage reference Vref is in0

       Here  is  a  table  of  correction  factors and offsets based on some typical compute line
       entries from /etc/sensors.conf:

		     Compute line		  Factor  Offset  Vref
	      lm80   in0 (24/14.7 + 1) * @	  2.633     0	    -
		     in2 (22.1/30 + 1) * @	  1.737     0	    -
		     in3 (2.8/1.9) * @		  1.474     0	    -
		     in4 (160/30.1 + 1) * @	  6.316     0	    -
		     in5 (160/35.7)*(@-in0) + @   5.482    -4.482  in0
		     in6 (36/16.2)*(@-in0) + @	  3.222    -2.222  in0

	      LM78   in3 ((6.8/10)+1)*@ 	  1.68	    0	    -
		     in4 ((28/10)+1)*@		  3.8	    0	    -
		     in5 -(210/60.4)*@		 -3.477     0	    -
		     in6 -(90.9/60.4)*@ 	 -1.505     0	    -

	      w83782 in5 (5.14 * @) - 14.91	  5.14	  -14.91    -
		     in6 (3.14 * @) -  7.71	  3.14	   -7.71    -

   Command launching
       Many monitors can be set up to launch a command when you click on the monitor label.  When
       a  command is configured for a monitor, its label is converted into a button which becomes
       visible when the mouse enters the panel or meter area of the label.

       You can use the command launching feature to run commands related to monitoring functions,
       or  you	may use it to have a convenient launch for any command.  Since gkrellm is usually
       made sticky, you can have easy access to several frequently used commands from  any  desk-
       top.   This  is	intended  to be a convenience and a way to maximize utilization of screen
       real estate and not a replacement for more full featured command launching  from  desktops
       such as Gnome or KDE or others.	Some launch ideas for some monitors could be:

	      gnomecal, evolution, or ical

       CPU:   xterm -e top or gps or gtop

       inet:  gftp or xterm -e ftpwho

       net:   mozilla, galeon, skipstone, or xterm -e slrn -C-

       And so on... Tooltips can be set up for these commands.

       The sensor and Battery monitors can have alerts configured to give warnings and alarms for
       data readings which range outside of configurable limits.  A warning or alarm consists  of
       an attention grabbing decal appearing and an optional command being executed.

       Additionally, if you have the gvoice plugin and the ViaVoice libraries from IBM installed,
       a voice alert may be configured to get your attention.

       A theme is a directory containing image files and a  gkrellmrc  configuration  file.   The
       directory should be installed as a subdirectory under your ~/.gkrellm2/themes directory or
       under  /usr/local/share/gkrellm2/themes.   Themes  for  gkrellm	can  be  downloaded  from
       http://www.muhri.net and once untarred can be selected from the Themes configuration tab.

       gkrellm	also  searches /usr/share/gkrellm2/themes for any system wide themes installed as
       part of a distribution.	Finally, a theme you simply want to check  out	can  be  untarred
       anywhere and used by running:

	      gkrellm -t path_to_theme

       If  you are interested in writing a theme, go to the Themes page at http://www.gkrellm.net
       and there you will find a Theme making reference.

       gkrellm tries to load all plugins (shared object files ending in .so)  it  finds  in  your
       plugin directory ~/.gkrellm2/plugins.  The directories /usr/local/lib/gkrellm2/plugins and
       /usr/lib/gkrellm2/plugins are also searched for plugins to install.

       Some plugins may be available only as source files and  they  will  have  to  be  compiled
       before  installation.   There  should be instructions for doing this with each plugin that
       comes in source form.

       If  you	are  interested  in   writing	a   plugin,   go   to	the   Plugins	page   at
       http://www.gkrellm.net and there you will find a Plugin programmers reference.

       When  a	local  gkrellm	runs  in client mode and connects to a remote gkrellmd server all
       builtin monitors collect their data from the server.  However, the client gkrellm  process
       is  running  on	the  local  machine, so any enabled plugins will run in the local context
       (Flynn is an exception to this since it derives its data from the  builtin  CPU	monitor).
       Also, any command launching will run commands on the local machine.

       Finally, at this time there is no support for file system mounting and mailbox checking on
       the machine where the gkrellmd server is running.

	      User gkrellm directory were are located configuration  files,  user's  plugins  and
	      user's themes.

	      User plugin directory.

	      System wide plugin directory.

	      Local plugin directory.

	      User theme directory.

	      System wide theme directory.

	      Local theme directory.

       Bill Wilson <bill@gkrellm.net>.	http://www.gkrellm.net/

       fstab(5), sudo(1), mount(8), pppd(8), umount(8)

GNU/Linux				  March 14, 2002			       gkrellm(1)

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