SYSMON(8) 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 col-
lected 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. Click-
ing 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.
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