Intel Corporation
REFRESH PERFORMANCE OPTIMIZATIONS FOR DRAM TECHNOLOGIES WITH SUB-CHANNEL AND/OR PSEUDO-CHANNEL CONFIGURATIONS

Abstract:

Systems, apparatuses and methods may provide for technology that generates a first refresh request with respect to a first sub-channel in a dynamic random access memory (DRAM), generates a second refresh request with respect to a second sub-channel in the DRAM, wherein the first sub-channel and the second sub-channel share a channel boundary, and synchronizes the first refresh request with the second refresh request. In one example, the first sub-channel is associated with a first scheduling queue and the second sub-channel is associated with a second scheduling queue. The technology may also adaptively spread refresh commands over the refresh interval period, dynamically schedule refreshes based on bus efficiency and/or selectively issue opportunistic refreshes based on read/write traffic.