> ## Documentation Index
> Fetch the complete documentation index at: https://docs.loadforge.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Cloud Performance

> About cloud performance per server on LoadForge.

LoadForge provides a powerful platform for conducting load testing using the **Locust.io** framework. Understanding how to efficiently allocate cloud resources ensures accurate and effective test results. This guide will help you optimize your test configurations for the best performance.

## Resource Dependency

LoadForge tests are **primarily CPU-bound**, meaning they rely heavily on processing power. Additionally, **network sockets** play a crucial role in handling large numbers of concurrent connections. Optimizing these resources is essential for generating realistic load scenarios.

## Performance Guidelines

To ensure optimal test performance, we recommend:

* Assigning **10,000 to 20,000 virtual users per worker**.
* Allocating **one additional server as a controller** to manage the test.

### Example Calculation:

For a test scenario simulating **50,000 virtual users**, you would need:

* **1 controller** to manage the test.
* **5 worker servers** to distribute the client load (50,000 / 10,000 = 5).

This results in a total of **6 servers** required for the test.

For larger tests, multiple worker processes are initiated on each server. For detailed insights on scaling, refer to our [Large Tests Guide](tests-large-scale).

While the recommended limit is **10,000 virtual users per worker**, LoadForge allows flexibility based on the test scenario. Pushing beyond this limit may work depending on your test complexity and infrastructure.

### Scaling Load Tests

For **high-scale testing**, LoadForge supports:

* Deploying **up to 20 worker servers per test**.
* Running **multiple simultaneous tests**.
* Simulating **millions of active users** across distributed servers.

For example:

* Deploying **20 servers**, each handling **20,000 virtual users**, enables testing of up to **400,000 concurrent users**.
* This level of scale is sufficient to simulate real-world traffic for high-demand applications.

<Note>
  **Virtual Users vs Real Users**: In a real-world scenario, only **20-30% of active users** are browsing at any given moment. However, virtual users in load tests generate **significantly higher concurrent traffic**. Keep this in mind when analyzing results.
</Note>

## Seeking Further Assistance

For large-scale test optimizations, LoadForge offers:

1. **Expert Support** – Our team can assist with test configuration and infrastructure scaling.
2. **Managed Testing Service** – Let our experts handle everything, from test setup to execution, ensuring optimal load simulation.

By following these guidelines, you can ensure **accurate, scalable, and cost-effective** load testing that prepares your infrastructure for real-world traffic surges.