PROMOTION OF PARTIAL DATA SEGMENTS IN FLASH CACHE

摘要

For efficient track destage in secondary storage in a more effective manner, for temporal bits employed with sequential bits for controlling the timing for destaging the track in a primary storage, a preference of movement to lower speed cache level is implemented based on at least one of an amount of holes and a data heat metric. If a first bit has at least one of a lower amount of holes and a hotter data heat metric, it is moved to the lower speed cache level ahead of a second bit that has at least one of a higher amount of holes and a cooler data heat. If the first bit has a hotter data heat and greater than a predetermined number of holes, the first bit is discarded.

主权项

1. A method for promoting partial data segments in a computing storage environment having lower and higher speed levels of cache by a processor, comprising:
configuring a data moving mechanism adapted for performing:
implementing a preference for movement of the partial data segments to the lower speed cache level based on at least one of an amount of holes and a data heat metric, wherein:
a first of the partial data segments having at least one of a lower amount of holes and a hotter data heat metric is moved to the lower speed cache level ahead of a second of the partial data segments having at least one of a higher amount of holes and a cooler data heat; andif the first of the partial data segments has a hotter data heat and greater than a predetermined number of holes, the first of the partial data segments is discarded.