Accelerating memory compression of a physically scattered buffer

Abstract

Embodiments herein describe using compression engines in a processor subsystem to compress only the data fragments stored locally. That is, an application may be allocated a buffer where the physical memory of that buffer is spread across multiple processor subsystems. Rather than asking a single actor (e.g., a single host processor or compression engine) to compress all the fragments of the buffer, a compression library can instead instruct the individual compression engines in each of the processor subsystems to compress only the fragments stored in local memory in the same processor subsystem. Doing so leverages the memory affinity between the compression engines in the local memory which can reduce the overall time required to perform compression.