# CPU & memory utilization

### Overview

Infra App provides real-time information about cluster and workload utilization, so you can identify how resources such as CPU and Memory are being used and reserved across your Kubernetes cluster.

{% hint style="info" %}
**Metrics Server Required**

CPU & memory utilization will work out of the box with most clusters. For real-time usage metrics, you'll need to make sure the official Kubernetes [metrics server](https://github.com/kubernetes-sigs/metrics-server) is installed. Many cloud Kubernetes providers such as GKE include it by default.
{% endhint %}

### Resource utilization

In the main view, Infra App shows the resource utilization of each resource at a glance. Infra App automatically adds up all the resources used by all pods of your resource, so you can view the total footprint of your workload across the cluster:

![](/files/-MKCm1GSYbxaZe1aKykr)

**To view top resources by utilization,** click on **CPU Usage** or **Memory Usage** in the table to sort the resources:

![](/files/-MKCm8oKrhMKvbC3N7c4)

### Individual resource utilization

By clicking on an individual resource, you can see more details about its CPU & Memory utilization:

![](/files/-MKCmHkvoNIgecwizBNS)

{% hint style="info" %}
**Hint:** CPU & Memory Percent is calculated by comparing the workload's usage against (in order):

* Requests (if set)
* Limits (if set)
* Total cluster capacity
  {% endhint %}

To further view a resource's utilization breakdown by pod, the pod table includes the utilization per-pod:

![](/files/-MBuOYSDRe-Ep7nD2_l-)

### Cluster Utilization

In the utilization view, Infra App shows what percent your Kubernetes cluster's resources are being used:

![](/files/-MKCmUhdGGokTDGoGtDy)

In this case, the cluster is almost out of CPU requests, meaning that future resources may not be successfully deployed by Kubernetes.

### Node Utilization

In the utilization view, Infra App includes a list of nodes with CPU & Memory utilization included. You can switch between usage, requests and limits to compare different utilization metrics for your nodes.

![](/files/-MKCmdEJ_U8uqEpUFEHv)

Clicking on a node in the table, you'll see the node's utilization at a glance:

![](/files/-MKCmiop0_NTbZjhFjdf)

Lastly, a list of pods on the node view can show you how resources are allocated on this node:

![](/files/-MKCmmnpAkuLiXAimVG-)


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