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CPU
The IRIX agent uses a number of utilities to gather these metrics, including:
sar. Collects information about system activity.ifconfig. Configures the parameters for network interfaces.ps. Reports on the status of processes.netstat. Reports on network status.
Each set of performance metrics is averaged between the interval at which the UIM monitoring station polls the agent (e.g. every 10 minutes).
CPU
The UIM The Uptime Infrastructure Monitor agent uses the sar utility (with the -u and -f options) to collect the metrics listed below from an IRIX system. The statistics returned by the agent are averaged for all CPUs on the system.
The amount | Amount of time that the CPU spends in user mode. |
| % Sys |
The amount | Amount of time that the kernel spends processing system calls. |
| % |
WIOThe amount | Amount of waiting time that a runable process for a device takes to perform an I/O operation. |
| Multi CPU Usage | Whether |
or not | a system with multiple CPUs is effectively balancing tasks between CPUs, or if processes are being forced off CPUs in certain circumstances. |
| Run Queue Length |
The percentage | Percentage of time that one or more services or processes are waiting to be served by the CPU. |
| Run Queue Occupancy |
The percentage | Percentage of time that one or more services or processes are waiting to be served by the CPU. |
Multi-CPU
The Uptime Infrastructure Monitor UIM agent collects the metrics listed below from IRIX systems with multiple CPUs. The CPU statistics output by the agent are an average of all the CPUs on the server.
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