Managing indication of accessed tracks in cache to a most recently used end of a cache list

A system for managing tracks in a storage, comprising:

• a processor;
• a cache in a memory device;
• a computer program product comprising a computer readable storage medium having computer readable program code embodied therein that when executed performs operations, the operations comprising:
• maintaining a cache list for the cache having a least recently used (LRU) end and a most recently used (MRU) end, wherein tracks in the cache are indicated in the cache list;
• accessing a track in the cache indicated at a current position on the cache list;
• determining whether a track cache residency time since the accessed track was last accessed while in the cache list is within a region of lowest track cache residency times;
• and
• in response to determining that the track cache residency time of the accessed track is within the region of lowest track cache residency times, setting a flag to indicate that the accessed track is to be indicated at the MRU end, wherein the accessed track remains at the current position in the cache list after setting the flag until the accessed track is not within the region of lowest track cache residency times.

A method for managing tracks in a storage in a cache, comprising:

• maintaining a cache list for the cache having a least recently used (LRU) end and a most recently used (MRU) end, wherein tracks in the cache are indicated in the cache list;
• accessing a track in the cache indicated at a current position on the cache list;
• determining whether a track cache residency time since the accessed track was last accessed while in the cache list is within a region of lowest track cache residency times;
• and
• in response to determining that the track cache residency time of the accessed track is within the region of lowest track cache residency times, setting a flag to indicate that the accessed track is to be indicated at the MRU end, wherein the accessed track remains at the current position in the cache list after setting the flag until the accessed track is not within the region of lowest track cache residency times.