Item | Description | Evaluation |
|---|---|---|
CPU usage rate (User, System) | Allows CPU usage rates to be ascertained and compared. | Check deviations and peaks in CPU usage rates. If the CPU usage rate consistently exceeds 80%, a CPU bottleneck may be degrading performance, or such a problem may be about to occur. It is necessary to consider taking measures such as increasing or upgrading the CPUs, adjusting the application execution schedule, or relocating some applications to a different server. Warning level: CPU usage rate > 80 % |
CPU queue length | Allows the number of CPU queue requests to be ascertained and compared. | If the number of CPU queue requests is consistently high, increasing the number of CPUs may be more effective than upgrading the CPU. Conversely, if the CPU usage rate is high when there are no queue requests, it indicates that the CPU performance is not enough to handle single processes, so a processor upgrade is recommended. Warning level: CPU queue length > 2 |
