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Integration of application indicated minimum time to cache for a two-tiered cache management mechanism

專利號(hào)
US11176057B2
公開(kāi)日期
2021-11-16
申請(qǐng)人
INTERNATIONAL BUSINESS MACHINES CORPORATION（US NY Armonk）
發(fā)明人
Lokesh Mohan Gupta; Matthew G. Borlick; Beth Ann Peterson; Kyler A. Anderson
IPC分類
G06F12/123; G06F12/0891; G06F12/0893
技術(shù)領(lǐng)域
cache,scm,retention,minimum,dram,tracks,track,lru,in,time
地域： NY NY Armonk

摘要

An indication is received from a host application of a first minimum retention time in a cache comprising a first type of memory and a second type of memory for a first plurality of tracks, wherein the first minimum retention time is not indicated for a second plurality of tracks. Based on the first minimum retention time, a second minimum retention time is set for the first plurality of tracks for the first type of memory and a third minimum retention time is set for the first plurality of tracks for the second type of memory. A track of the first plurality of tracks is demoted from the first type of memory, in response to determining that the track is a least recently used (LRU) track in a LRU list of tracks in the first type of memory and the track has been in the first type of memory for a time that exceeds the second minimum retention time.

說(shuō)明書

The foregoing description of various embodiments of the invention has been presented for the purposes of illustration and description. It is not intended to be exhaustive or to limit the invention to the precise form disclosed. Many modifications and variations are possible in light of the above teaching. It is intended that the scope of the invention be limited not by this detailed description, but rather by the claims appended hereto. The above specification, examples and data provide a complete description of the manufacture and use of the composition of the invention. Since many embodiments of the invention can be made without departing from the spirit and scope of the invention, the invention resides in the claims hereinafter appended.

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