Abstract: A processor sets the size of a processor cache based on an identified workload executing at the processor. The cache size is set in response to the processor exiting a low-power mode. By setting the size of the cache based on the workload, the processor is able to tailor the size of the cache to the characteristics of a particular workload while also reducing, for at least some workloads, the overhead associated with entering or exiting the low-power mode.

Abstract: A data processor includes a plurality of requestors, a plurality of responders, and a data fabric. The data fabric is for routing requests between the plurality of requestors and the plurality of responders and has a plurality of non-operational power states including a normal C-state and a light-weight C-state. The light-weight C-state has lower entry and exit latencies than the normal C-state. The data fabric monitors traffic through the data fabric and places the data fabric in the light-weight C-state in response to detecting an idle traffic state.