“‘As I understand, fair_clock is a monotonously increasing clock
which advances at a pace inversely proportional to the load on the
runqueue,’ Srivatsa Vaddagiri explained in a review of Ingo
Molnar’s CFS CPU scheduler [story], ‘if load = 1 (task), it will
advance at same pace as wall clock, as load increases it advances
slower than wall clock.’ He continued on to ask some questions
about the choices made in CFS as compared to the EEVDF CPU
scheduler. In the resulting discussion, Ingo offered some insight
into the design of the CFS…”