eG Monitoring

Measures reported by OraZFSCPUUtlTest A CPU may be a core on a socket or a hardware thread. For example, a system may have four sockets of quad-core CPUs, meaning there are 16 CPUs available to the appliance. The utilization shown by this statistic is the average across all CPUs. The appliance CPUs can reach 100% utilization, which may or may not be a problem. For some performance tests the appliance is deliberately driven to 100% CPU utilization to measure it at peak performance. CPU utilization represents the time spent processing CPU instructions in user and kernel code, that are not part of the idle thread. Instruction time includes stall cycles on the memory bus, so high utilization can be caused by the I/O movement of data. This test monitors and reports the maximum utilization of CPU and checks for bottlenecks. This helps the administrator identify the tasks/ applications that are consuming too much of CPU resources and take necessary steps to minimize such tasks. Outputs of the test: One set of results for the Oracle ZFS Storage System being monitored. The measures made by this test are as follows:
Measurement | Description | Measurement Unit | Interpretation
--- | --- | --- | ---
cpuUtilValue | Indicates the current CPU utilization while eG agent collects measures from the storage device. | Percent |
averageCPUUtil | Indicates the average CPU utilization during the last measurement period. | Percent | A value close to 100% is a cause of concern, as it could indicate excessive usage of the storage device. If this condition is left unchecked, it can cause the overall performance of the device to significantly deteriorate and badly impact user-experience with the appliance.
maximumCPUUtil | Indicates the maximum CPU utilization during the last measurement period. | Percent | Compare the value of this measure across users to know which user is using the maximum CPU and is probably causing a CPU contention on the system.
utilByCPUIDMax | Indicates the maximum CPU utilization by CPU ID. | Percent | The detailed diagnosis of this measure lists the CPU IDs which had utilized the CPU to the maximum and when it had happened.
utilByAppNameMax | Indicates the maximum CPU utilization by Application. | Percent | The detailed diagnosis of this measure lists the applications which had utilized the CPU to the maximum and when it had happened.
utilByCPUModeMax | Indicates the maximum CPU utilization by Mode (User mode, Kernel mode) | Percent | The detailed diagnosis of this measure lists the mode (User mode, Kernel mode) which had utilized the CPU to the maximum and when it had happened.
utilByPIDMax | Indicates the maximum CPU utilization by Process ID. | Percent | The detailed diagnosis of this measure lists the PIDs which had utilized the CPU to the maximum and when it had happened.
utilByUserMax | Indicates the maximum CPU utilization by User. | Percent | The detailed diagnosis of this measure lists the users which had utilized the CPU to the maximum and when it had happened.