Brocade Network OS Administrator’s Guide v4.1.1 - Manual (Page 241)

apply actions and thresholds separately. For example, you can choose to use default threshold settings
together with a customized subset of available actions, or you can modify some of the threshold settings
and use the default action settings. You can also pause monitoring and actions by means of the pause
keyword.
For detailed information on the variables and keywords (operands) of the threshold-monitor series of
commands, refer to the Network OS Command Reference.
CPU and memory monitoring
When configuring CPU monitoring, specify a value in the 1-100 range. When the CPU usage exceeds
the limit, a threshold monitor alert is triggered. The default CPU limit is 75 percent. With respect to
memory, the limit specifies a usage limit as a percentage of available resources.
When used to configure memory or CPU threshold monitoring, the limit value must be greater than the
low limit and smaller than the high limit. The alert provided is a RASLog message, with the following
options configurable under the raslog option of the threshold-monitor cpu or the threshold-monitor
memory commands:
high-
limit Specifies an upper limit for memory usage as a percentage of available memory.
This value must be greater than the value set by limit. When memory usage
exceeds this limit, a RASLog CRITICAL message is sent. Valid values range from
range from 0 through 80 percent.
limit Specifies the baseline memory usage limit as a percentage of available resources.
When this value is exceeded, a RASLog WARNING message is sent. When the
usage returns below the value set by limit, a RASLog INFO message is sent.
Valid values range from 0 through 80 percent.
low-
limit Specifies a lower limit for memory usage as percentage of available memory. This
value must be smaller than the value set by limit. When memory usage exceeds
or falls below this limit, a RASLog INFO message is sent.
poll Specifies the polling interval in seconds. Valid values range from 0 through 3600.
retry Specifies the number of polling retries before desired action is taken. Valid values
range from 1 through 100.
NOTE
For CPU and memory thresholds, the low limit must be the lowest value and the high limit must be the
highest value.
The table below lists the factory defaults for CPU and memory thresholds.
Default values for CPU and memory threshold monitoring TABLE 39
Operand Memory CPU
low-limit 40% N/A
limit 60% 75%
high-limit 70% N/A
poll 120 seconds 120 seconds
CPU and memory monitoring
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