Network OS Administration Guide

Supporting Network OS 6.0.1a

Part Number: 53-1003768-04

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.

Table 30 Default values for CPU and memory threshold monitoring

Operand

Memory

CPU

low-limit

40%

N/A

limit

60%

75%

high-limit

70%

N/A

poll

120 seconds

120 seconds

retry

3

3