Administrator Guide

Server Performance metrics and workflows
6 Telemetry Streaming with iDRAC9 Server -Telemetry Performance Reports | ID 457
2 Server Performance metrics and workflows
This section describes the telemetry performance reports, metrics, and workflows to derive useful insights.
2.1 System Usage report metrics
The Compute Usage Per Second (CUPS) report is available on Intel-based server platforms. CUPS report
enables real-time performance monitoring data for CPU, memory, I/O, and system utilization. It is
independent of the operating system that is installed at the servers and does not consume CPU resources.
Sensors in the server store the CPU, memory, and I/O resource utilization values as CUPS. The iDRAC
monitors this CUPS index for overall system utilization and monitors instantaneous utilization index values of
CPU, memory, and I/O. For AMD systems, the System Usage report will only contain CPU Usage metrics.
The metrics for System Usage reports are listed below:
• CPU Usage - The combined CPU utilization of all the CPU cores in the system. Utilization is based
on time that is spent in active state compared to time spent in inactive state.
• I/O Usage – Each root port in the PCIe root complex has a counter that measures the traffic from or
directed to the root port. These counters are combined to measure traffic for all PCIe segments
derived from the package. This aggregate number is measure of I/O bandwidth utilization for the
system.
• Memory Usage - There are individual counters to measure memory traffic occurring at each memory
channel or memory controller instance. These counters are combined to measure the cumulative
memory traffic across all the memory channels on the system. This number is a measure of memory
bandwidth consumption and not the capacity of the system memory.
• Aggregate Usage - This value is calculated by combining CPU, memory, and I/O indexes
considering the load factor of each resource. The load factor depends on the nature of workload on
the system.
Note regarding a change in the name of this report metric:
Dell EMC iDRAC firmware version 4.40.00.00 modifies the naming schema within Telemetry
Reporting. Compute Usage Per Second (CUPS) terminology is Intel-specific terminology. With the addition of
AMD processor support within this report, CUPS report metrics will now be identified as System Usage report
metrics.
Previous Report Schema (iDRAC9 4.00.00.00 - 4.32.10.00):
CUPS {
CPUUsage,
MemoryUsage,
IOUsage,
SystemUsage
}
New Report Schema (iDRAC9 4.40.00.00 - Later):
SystemUsage {
CPUUsage,
MemoryUsage,
IOUsage,
AggregateUsage
}