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STATS(8)							      STATS(8)

       stats - display graphs of system activity

       stats [ -option ] [ machine ...	]

       Stats  displays	a rolling graph of various statistics collected by the
       operating system and updated once per second.  The  statistics  may  be
       from a remote machine or multiple machines, whose graphs will appear in
       adjacent columns.  The columns are labeled by the machine names and the
       number of processors on the machine if it is a multiprocessor.

       The  right  mouse button presents a menu to enable and disable the dis‐
       play of various statistics; by default, stats  begins  by  showing  the
       load average on the executing machine.

       The lower-case options choose the initial set to display:

       b battery
	      percentage battery life remaining.

       c context
	      number of process context switches per second.

       e ether
	      total number of packets sent and received per second.

       E etherin,out
	      number  of  packets  sent	 and received per second, displayed as
	      separate graphs.

       f fault
	      number of page faults per second.

       i intr number of interrupts per second.

       I idle system load, % time in idle, and % time in interrupts.  The last
	      two are averaged over all processors on a multiprocessor.

       l load (default)	 system	 load average.	The load is computed as a run‐
	      ning average of the number of processes ready to run, multiplied
	      by 1000.

       m mem  total  pages  of active memory.  The graph displays the fraction
	      of the machine's total memory in use.

       n etherin,out,err
	      number of packets sent and received per second, and total number
	      of errors, displayed as separate graphs.

       p tlbpurge
	      number of translation lookaside buffer flushes per second.

       s syscall
	      number of system calls per second.

       t tlbmiss
	      number of translation lookaside buffer misses per second.

       w swap number of valid pages on the swap device.	 The swap is displayed
	      as a fraction of the number of  swap  pages  configured  by  the

       8 802.11b
	      display  the  signal  strength  detected by the 802.11b wireless
	      ether card; the value is usually below 50% unless	 the  receiver
	      is in the same room as the transmitter, so a midrange value rep‐
	      resents a strong signal.

       The graphs are plotted with time on the horizontal axis.	 The  vertical
       axes  range  from 0 to 1000*sleepsecs, multiplied by the number of pro‐
       cessors on the machine when appropriate.	 The only exceptions are  mem‐
       ory,  and  swap	space, which display fractions of the total available,
       system load, which displays a number between 0 and 1000, idle and intr,
       which display percentages and the Ethernet error count, which goes from
       0 to 10..  If the value of the parameter is too large for  the  visible
       range,  its  value  is shown in decimal in the upper left corner of the

       Upper-case options control details of  the  display.   All  graphs  are
       affected; there is no mechanism to affect only one graph.

       -T sleepsecs
	      Set  the number of seconds between samples to sleepsecs (default
	      one second).  Sleepsecs may be a floating-point number.

       -S scale
	      Sets a scale factor for the displays.  A value of 2,  for	 exam‐
	      ple, means that the highest value plotted will be twice as large
	      as the default.

       -L     Plot all graphs with logarithmic y axes.	The graph  is  plotted
	      so  the  maximum value that would be displayed on a linear graph
	      is 2/3 of the way up the y axis and the total range of the graph
	      is  a  factor of 1000; thus the y origin is 1/100 of the default
	      maximum value and the top of the graph is 10 times  the  default

       -Y     If the display is large enough to show them, place value markers
	      along the y axes of the graphs.  Since one set of markers serves
	      for  all	machines across the display, the values in the markers
	      disregard scaling factors due  to	 multiple  processors  on  the
	      machines.	 On a graph for a multiprocessor, the displayed values
	      will be larger than the markers indicate.	  The  markers	appear
	      along  the right, and the markers show values appropriate to the
	      rightmost machine; this only matters for graphs such  as	memory
	      that have machine-specific maxima.



       Some machines do not have TLB hardware.

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