Top - Extreme Networks ExtremeWare Command Reference Manual

Troubleshooting Commands

top

top
Description
Displays real-time CPU utilization information by process.
Syntax Description
This command has no arguments or variables.
Default
N/A
Usage Guidelines
Use this command to show the percentage of CPU processing devoted to each task, sampled every 30
seconds. In a healthy ExtremeWare system, only the BGTask uses significant CPU processing power.
Investigate tasks showing consistent or periodic high CPU utilization.
You can change the display by typing a character while the display is active. These single character
commands are as follows:
Table 21: TOP command display options
u Go up one screen
d Go down one screen
c Clear max utilization
% Sort tasks by CPU utilization
t Sort tasks by task id
p Sort tasks by program counter
n Sort tasks by name
s Sort tasks by task state
m Sort tasks by max CPU utilization
h Show the help screen
<space> go to next sort type
q Exit top
<esc>
<return>
Table 22 defines the tasks. Depending on your switch model and the functions it is executing, you will
see only a subset of these tasks.
1238 ExtremeWare 7.5 Command Reference Guide