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 display 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:
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 running 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.
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 machine.
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 represents 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 processors on the machine when appropriate. The only exceptions are memory, 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 graph.
Upper–case options control details of the display. All graphs are
affected; there is no mechanism to affect only one graph.
Some machines do not have TLB hardware.|