The lveinfo command in CloudLinux provides information about Lightweight Virtual Environment (LVE) usage on a server. When you request average values over a period, it calculates the average usage of resources (like CPU, memory, and others) for all users within that time frame.

Here's a basic outline of how this is typically done:

1. Data Collection Frequency:

   • LVE data is collected at regular intervals (usually in seconds). This can be configured in the server's settings. For example, if data is collected every 5 seconds, you'll have data points every 5 seconds.

2. Timestamps:

   • Each data point collected is associated with a timestamp, indicating when that data was recorded.

3. Period Selection:

   • When you request average values over a period, lveinfo will look at all the data points within that specified time frame.

4. Calculation:

   • For each resource (e.g., CPU, memory), the usage values recorded at each data point within the selected period are summed.

5. Divide by the Number of Data Points:

   • The total usage for each resource is divided by the number of data points within the period. This yields the average usage for that resource over the specified time frame.

6. Result Display:

   • The calculated average values for each resource are then displayed by lveinfo.

For example, if you request the average CPU usage over the past hour, lveinfo will take all the CPU usage data points recorded in the last hour, add them together, and divide them by the number of data points to give you the average CPU usage for that period.

It's worth noting that this is a simplified explanation and actual implementations may have additional factors to consider (like handling of outliers, data smoothing techniques, etc.). Also, the specific configuration and algorithms used by lveinfo may vary depending on the version and settings of CloudLinux you're using.

Always refer to official documentation or resources provided by CloudLinux for precise details on how lveinfo functions in your specific environment.