The CPU Pressure API enables you to observe the pressure of system resources such as the CPU.

Use Cases

In real-time applications, such as video conferencing web apps, the Compute Pressure API lets you detect which pressure the system is currently facing. The system will handle any stress as well as it can, but a collaboration between system and app is useful to handle the pressure best. This API notifies you the pressure state, so you can adjust your workloads and still offer a pleasant user experience.

for example, to reduce or increase the video quality or the number of video feeds shown simultaneously to avoid dropping video frames, audio cuts, or delaying other critical parts of the application. The quality of service of your web app can vary, also due to pressure from external factors and apps at unexpected times, but ideally that does not lead to a total system failure, input delay, or unresponsiveness. Instead, the set of enabled features and their quality level is balanced against the resource pressure of the end-user device. It is similar to network pressure in which case a streaming app adapts to the available bandwidth.

Web games, for which you could balance the quality and amount of 3D assets, change the framerate, resolution, depth of field etc., to ensure low latency and stable frame rate.

User interfaces, for which you could render placeholders instead of real data while the system is under pressure, and render the real content once the pressure has eased.