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Chapter 5. Visualizing power monitoring metrics

Important

Power monitoring is a Technology Preview feature only. Technology Preview features are not supported with Red Hat production service level agreements (SLAs) and might not be functionally complete. Red Hat does not recommend using them in production. These features provide early access to upcoming product features, enabling customers to test functionality and provide feedback during the development process.

For more information about the support scope of Red Hat Technology Preview features, see Technology Preview Features Support Scope.

You can visualize power monitoring metrics in the OpenShift Container Platform web console by accessing power monitoring dashboards or by exploring Metrics under the Observe tab.

5.1. Power monitoring dashboards overview

There are two types of power monitoring dashboards. Both provide different levels of details around power consumption metrics for a single cluster:

Power Monitoring / Overview dashboard

With this dashboard, you can observe the following information:

  • An aggregated view of CPU architecture and its power source (rapl-sysfs, rapl-msr, or estimator) along with total nodes with this configuration
  • Total energy consumption by a cluster in the last 24 hours (measured in kilowatt-hour)
  • The amount of power consumed by the top 10 namespaces in a cluster in the last 24 hours
  • Detailed node information, such as its CPU architecture and component power source

These features allow you to effectively monitor the energy consumption of the cluster without needing to investigate each namespace separately.

Warning

Ensure that the Components Source column does not display estimator as the power source.

Figure 5.1. The Detailed Node Information table with rapl-sysfs as the component power source

power monitoring component power source

If Kepler is unable to obtain hardware power consumption metrics, the Components Source column displays estimator as the power source, which is not supported in Technology Preview. If that happens, then the values from the nodes are not accurate.

Power Monitoring / Namespace dashboard

This dashboard allows you to view metrics by namespace and pod. You can observe the following information:

  • The power consumption metrics, such as consumption in DRAM and PKG
  • The energy consumption metrics in the last hour, such as consumption in DRAM and PKG for core and uncore components

This feature allows you to investigate key peaks and easily identify the primary root causes of high consumption.

5.2. Accessing power monitoring dashboards as a cluster administrator

You can access power monitoring dashboards from the Administrator perspective of the OpenShift Container Platform web console.

Prerequisites

  • You have access to the OpenShift Container Platform web console.
  • You are logged in as a user with the cluster-admin role.
  • You have installed the Power monitoring Operator.
  • You have deployed Kepler in your cluster.
  • You have enabled monitoring for user-defined projects.

Procedure

  1. In the Administrator perspective of the web console, go to Observe Dashboards.

  2. From the Dashboard drop-down list, select the power monitoring dashboard you want to see:

    • Power Monitoring / Overview
    • Power Monitoring / Namespace

5.3. Accessing power monitoring dashboards as a developer

You can access power monitoring dashboards from the Developer perspective of the OpenShift Container Platform web console.

Prerequisites

  • You have access to the OpenShift Container Platform web console.
  • You have access to the cluster as a developer or as a user.
  • You have installed the Power monitoring Operator.
  • You have deployed Kepler in your cluster.
  • You have enabled monitoring for user-defined projects.
  • You have view permissions for the namespace openshift-power-monitoring, the namespace where Kepler is deployed to.

Procedure

  1. In the Developer perspective of the web console, go to Observe Dashboard.

  2. From the Dashboard drop-down list, select the power monitoring dashboard you want to see:

    • Power Monitoring / Overview

5.4. Power monitoring metrics overview

The Power monitoring Operator exposes the following metrics, which you can view by using the OpenShift Container Platform web console under the Observe Metrics tab.

Warning

This list of exposed metrics is not definitive. Metrics might be added or removed in future releases.

Table 5.1. Power monitoring Operator metrics
Metric nameDescription

kepler_container_joules_total

The aggregated package or socket energy consumption of CPU, DRAM, and other host components by a container.

kepler_container_core_joules_total

The total energy consumption across CPU cores used by a container. If the system has access to RAPL_ metrics, this metric reflects the proportional container energy consumption of the RAPL Power Plan 0 (PP0), which is the energy consumed by all CPU cores in the socket.

kepler_container_dram_joules_total

The total energy consumption of DRAM by a container.

kepler_container_uncore_joules_total

The cumulative energy consumption by uncore components used by a container. The number of components might vary depending on the system. The uncore metric is processor model-specific and might not be available on some server CPUs.

kepler_container_package_joules_total

The cumulative energy consumed by the CPU socket used by a container. It includes all core and uncore components.

kepler_container_other_joules_total

The cumulative energy consumption of host components, excluding CPU and DRAM, used by a container. Generally, this metric is the energy consumption of ACPI hosts.

kepler_container_bpf_cpu_time_us_total

The total CPU time used by the container that utilizes the BPF tracing.

kepler_container_cpu_cycles_total

The total CPU cycles used by the container that utilizes hardware counters. CPU cycles is a metric directly related to CPU frequency. On systems where processors run at a fixed frequency, CPU cycles and total CPU time are roughly equivalent. On systems where processors run at varying frequencies, CPU cycles and total CPU time have different values.

kepler_container_cpu_instructions_total

The total CPU instructions used by the container that utilizes hardware counters. CPU instructions is a metric that accounts how the CPU is used.

kepler_container_cache_miss_total

The total cache miss that occurs for a container that uses hardware counters.

kepler_container_cgroupfs_cpu_usage_us_total

The total CPU time used by a container reading from control group statistics.

kepler_container_cgroupfs_memory_usage_bytes_total

The total memory in bytes used by a container reading from control group statistics.

kepler_container_cgroupfs_system_cpu_usage_us_total

The total CPU time in kernel space used by the container reading from control group statistics.

kepler_container_cgroupfs_user_cpu_usage_us_total

The total CPU time in user space used by a container reading from control group statistics.

kepler_container_bpf_net_tx_irq_total

The total number of packets transmitted to network cards of a container that uses the BPF tracing.

kepler_container_bpf_net_rx_irq_total

The total number of packets received from network cards of a container that uses the BPF tracing.

kepler_container_bpf_block_irq_total

The total number of block I/O calls of a container that uses the BPF tracing.

kepler_node_info

The node metadata, such as the node CPU architecture.

kepler_node_core_joules_total

The total energy consumption across CPU cores used by all containers running on a node and operating system.

kepler_node_uncore_joules_total

The cumulative energy consumption by uncore components used by all containers running on the node and operating system. The number of components might vary depending on the system.

kepler_node_dram_joules_total

The total energy consumption of DRAM by all containers running on the node and operating system.

kepler_node_package_joules_total

The cumulative energy consumed by the CPU socket used by all containers running on the node and operating system. It includes all core and uncore components.

kepler_node_other_host_components_joules_total

The cumulative energy consumption of host components, excluding CPU and DRAM, used by all containers running on the node and operating system. Generally, this metric is the energy consumption of ACPI hosts.

kepler_node_platform_joules_total

The total energy consumption of the host. Generally, this metric is the host energy consumption from Redfish BMC or ACPI.

kepler_node_energy_stat

Multiple metrics from nodes labeled with container resource utilization control group metrics that are used in the model server.

kepler_node_accelerator_intel_qat

The utilization of the accelerator Intel QAT on a certain node. If the system contains Intel QATs, Kepler can calculate the utilization of the node’s QATs through telemetry.

5.5. Additional resources

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