H3C S5830V2 Command Reference Manual page 244

slot slot-number: Specifies an IRF member device by its member ID or a PEX by its virtual slot
number. If you do not specify this option, the command displays the historical CPU usage statistics
for the master device.
cpu cpu-number: Displays the historical CPU usage statistics. The cpu-number argument must be 0.
Usage guidelines
After CPU usage monitoring is enabled, the system regularly samples CPU usage and saves the
samples to the history record buffer. This command displays the most recent 60 samples in a
coordinate system as follows:
•
The vertical axis represents the CPU usage. If a statistic is not a multiple of the usage step, it is
rounded up or down to the closest multiple of the usage step. For example, if the CPU usage
step is 5%, the statistic 53% is rounded up to 55%, and the statistic 52% is rounded down to
50%.
•
The horizontal axis represents the time.
•
Consecutive pound signs (#) indicate the CPU usage at a specific time. The value on the
vertical axis for the topmost pound sign at a specific time represents the CPU usage at that
time.
Examples
# Display the historical CPU usage statistics for the entire system.
<Sysname> display cpu-usage history
100%|
95%|
90%|
85%|
80%|
75%|
70%|
65%|
60%|
55%|
50%|
45%|
40%|
35%|
30%|
25%|
20%|
15%|
10%|
5%|
------------------------------------------------------------
The output shows the historical CPU usage statistics for the entire system (with the name SYSTEM)
in the last 60 minutes.
•
12 minutes ago: Approximately 5%.
•
13 minutes ago: Approximately 10%.
•
14 minutes ago: Approximately 15%.
•
15 minutes ago: Approximately 10%.
#
### #
########
10 20
cpu-usage (Slot 1 CPU 0) last 60 minutes (SYSTEM)
30 40
232
50 60 (minutes)