Exceeding Co-efficient Limits

This function is limited to DaDesktop Private Server (DDPS) and DaDesktop On-Premise (DDOP).

As course complexity and processing power needs grow, particularly with nested virtualisation or higher performance demands from a large number of trainee desktops, you might occasionally run into a warning like this :

Resource overallocation warning dialog

This alert appears for CPU, memory, or disk space overallocation. When you see it, the initial step is to try relocating your machine(s) to a less busy server or data centre, or to scale back resource needs where feasible.

If neither option is possible, and the running units only slightly exceed the normal maximum, you can temporarily over-commit one or more of the CPU, memory, or disk coefficients. This is done through the GUI as shown below.

Head to /da/admin/servers/all, press the Edit button for your server, and scroll down to this part.

CPU coefficient overallocation setting

The server list also displays which servers are currently using over-committed coefficients. This comes in handy when you need to clear them after a course ends, allowing you to revert the coefficients to their default values.

List of servers with active over-commitments

Treat any adjustments as a temporary workaround, not a long-term fix for insufficient resources. Once the course has finished, revert any changes that were made to allow it to proceed.

DaDesktop On-Premise System Requirements

The over-commit capability relies on tpapi, a component of the DaDesktop codebase. Currently, tpapi works solely with Python 3.12, meaning the operating system must be at least Ubuntu 23.10.