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# Infrastructure Testing graphs

By default, system resource usage is monitored for the Controller and load generator machines during a scenario. This helps you determine the impact of Vuser load on these components.

This category currently contains a single graph, as described below.

## Controller and Load Generator Resources graph

This graph shows the system resource usage for the Controller and load generator machines during a scenario.

The graph includes the following measurements for the Controller and each load generator machine:

- CPU usage

- Memory usage

- Disk usage (Windows machines only)

Axis | Description
--- | ---
X-axis | Elapsed time since the start of the run.
Y-axis | The percentage of the resource in use.

Note: Metrics are not collected for Dockerized load generators.

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See also:

- Controller and Load Generator Resources monitor

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