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LEARN ABOUT PLAN9

sysmon

SYSMON(8)						      System Manager's Manual							 SYSMON(8)

NAME

       sysmon, stats - display graphs of system activity

SYNOPSIS

       sysmon [ machine [ -option ] ]

       stats [ -option ]

DESCRIPTION

       Sysmon  displays  a rolling graph of various statistics collected by the operating system.  The statistics may be from a remote machine.  A
       sample value is taken once per second. The number in the top left corner of the graph gives the peak value for the duration of  the  graph.
       Lines  across  the  graph represent 75%, 50%, and 25% of the peak value.  Clicking a mouse button anywhere in the window cycles through the
       list of parameters to monitor; an option letter sets the initial choice.  The option letters and parameters are:

       [m] mem
	      total pages of active memory.  The memory is displayed as a fraction of the machine's total memory.

       [e] ether
	      number of packets sent and received 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
	      machine.

       [c] contxt
	      number of process context switches per second.

       [i] intr
	      number of interrupts per second.

       [f] fault
	      number of memory faults per second.

       [t] tlbmiss
	      number of translation look-aside buffer misses per second.

       [p] tlbpurge
	      number of translation lookaside buffer flushes per second.

       [l] load
	      system  load  average.  The load is computed as a running average of the number of processes ready to run multiplied by 1000 to give
	      some precision.

       The stats program is invoked by sysmon to display the graph.

FILES

       /net/*/[0-n]/stats
       #c/sysstat

SOURCE

       /rc/bin/sysmon
       /sys/src/cmd/stats.c

BUGS

       Some machines do not have TLB hardware.

																	 SYSMON(8)