A method is provided. The method comprises: commencing a time window, where the time window has a fixed or variable time duration; determining a shared resource access quota for at least one time partition for the time window, where the shared resource access quota may vary by time window; allocating each determined shared resource access quota to a corresponding time partition for the window; determining if allocated shared resource access quota for any time partition in the time window has been met or exceeded; and if an allocated shared resource access quota for a time partition in the time window has been met or exceeded, then halting an executing process in the time partition.