# Nodes Overview

![!image](../../_images/PMM_Nodes_Overview.jpg)

The Nodes Overview dashboard provides details about the efficiency of work of the following components. Each component is represented as a section in the dashboard.

- CPU
- Memory & Swap
- Disk
- Network

The *CPU* section offers the *CPU Usage*, *CPU Saturation and Max Core Usage*, *Interrupts and Context Switches*, and *Processes* metrics.

In the *Memory* section, you can find the *Memory Utilization*, *Virtual Memory Utilization*, *Swap Space*, and *Swap Activity* metrics.

The *Disk* section contains the *I/O Activity*, *Global File Descriptors Usage*, *Disk IO Latency*, and *Disk IO Load* metrics.

In the *Network* section, you can find the *Network Traffic*, *Network Utilization Hourly*, *Local Network Errors*, and *TCP Retransmission* metrics.