Dynamically controlling use of a shared computing resource by virtual-computing sessions of a client computing device includes storing per-virtual-channel weights representing contributions of session virtual channels to performance, the stored weights including sets of weights for respective distinct application types. A resource allocation operation includes (i) for each session, selecting a set of weights based on a type of application using the session and applying the selected set of weights to activity state data to produce a session activity value, the activity state data representing activity states of the session virtual channels, and (ii) generating resource usage control signals based on the session activity values of the sessions, the resource usage control signals representing a target pattern of use of the shared computing resource by the sessions. An enforcement operation uses the resource usage control signals to establish the target pattern of use of the shared resource by the sessions.