CAPTURING COMPRESSION EFFICIENCY METRICS FOR PROCESSING DATA

摘要

Provided are techniques for capturing compression efficiency metrics for processing data. In response to retrieving native data for a first operation, perform the first operation; perform a second operation to generate a compression efficiency metric from the native data based on a ratio of the native data to compressed native data; and store the compression efficiency metric persistently for subsequent use in prioritizing compression of the native data.

主权项

1. A computer program product, the computer program product comprising a computer readable storage medium having program code embodied therewith, the program code executable by at least one processor to perform:
periodically retrieving, by the at least one processor, native data of an extent from storage to perform a consistency scrub operation that verifies parity data to determine whether the native data is accurate and recoverable; and in response to retrieving the native data of the extent for the consistency scrub operation,
performing, by the at least one processor, the consistency scrub operation; andgenerating, by the at least one processor, a compression efficiency metric for the extent by:
compressing, by the at least one processor, the native data; andgenerating, by the at least one processor, a ratio of the native data to the compressed native data; andstoring, by the at least one processor, the compression efficiency metric persistently for subsequent use in prioritizing compression of multiple extents.