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How Can I Determine Whether CPU Usages of the System and Processes Are High?
System CPU usage is within the normal range if the following conditions are met:
- The CPU usage does not exceed 80% when the system runs for a long period.
- The CPU usage does not exceed 95% in a short period and does not keep increasing.
- No high CPU usage alarm is generated.
In the following scenarios, the system may generate an alarm when the CPU usage spikes and then clear this alarm rapidly. This situation is normal and does not affect the device operation.
- The device has just been started.
- Information about all optical modules is queried at a time.
- Traffic volume increases instantly.
The service volume and processing time can affect the usage of CPU resources. CPU usage is within a normal range as long as the system CPU usage does not exceed 80% and no high CPU usage alarm is generated.
High CPU usage alarms are as follows:
- Alarm
ENTITYTRAP_1.3.6.1.4.1.2011.5.25.219.2.14.1 hwCPUUtilizationRising ENTITYTRAP/4/ENTITYCPUALARM:OID [oid] CPU utilization exceeded the pre-alarm threshold.(Index=[INTEGER], EntityPhysicalIndex=[INTEGER], PhysicalName=[OCTET], EntityThresholdType=[INTEGER], EntityThresholdValue=[INTEGER], EntityThresholdCurrent=[INTEGER], EntityTrapFaultID=[INTEGER].)