Accelerate memory decompression of a large physically scattered buffer on a multi-socket symmetric multiprocessing architecture

A system comprising:

• a memory having computer readable instructions;
• and
• one or more processors for executing the computer readable instructions, the computer readable instructions controlling the one or more processors to perform operations comprising:
• receiving a request for scattered data from a compressed file;
• identifying a first subsystem and a second subsystem of a plurality of subsystems respectively storing, in a respective first physical block and second physical block, a first compressed data and a second compressed data, wherein the first compressed data and the second compressed data are fragments of the requested scattered data, and wherein the first physical block and the second physical block are noncontiguous blocks separated by unrelated data pages;
• identifying a compression method used to compress the first compressed data and the second compressed data;
• identifying a first accelerator of the first subsystem having a closest physical proximity to the first physical block and a second accelerator of the second subsystem having a closest physical proximity to the second physical block;
• and
• offloading the first compressed data to the first accelerator, and the second compressed data to the second accelerator, wherein offloading comprises providing a decompression method for the first compressed data and the second compressed data based on the compression method.

A computer program product comprising a computer readable storage medium having program instructions embodied therewith, the program instructions executable by a processor to cause the processor to perform operations comprising:

• receiving a request for scattered data from a compressed file;
• identifying a first subsystem and a second subsystem of a plurality of subsystems respectively storing, in a respective first physical block and second physical block, a first compressed data and a second compressed data, wherein the first compressed data and the second compressed data are fragments of the requested scattered data, and wherein the first physical block and the second physical block are noncontiguous blocks separated by unrelated data pages;
• identifying a compression method used to compress the first compressed data and the second compressed data;
• identifying a first accelerator of the first subsystem having a closest physical proximity to the first physical block and a second accelerator of the second subsystem having a closest physical proximity to the second physical block;
• and
• offloading the first compressed data to the first accelerator, and the second compressed data to the second accelerator, wherein offloading comprises providing a decompression method for the first compressed data and the second compressed data based on the compression method.