Invention Grant
- Patent Title: Storage system and method for hit-rate-score-based selective prediction of future random read commands
-
Application No.: US16454850Application Date: 2019-06-27
-
Publication No.: US10976964B2Publication Date: 2021-04-13
- Inventor: Guruswamy Ganesh , Shay Benisty , Ariel Navon , Yair Baram
- Applicant: Western Digital Technologies, Inc.
- Applicant Address: US CA San Jose
- Assignee: Western Digital Technologies, Inc.
- Current Assignee: Western Digital Technologies, Inc.
- Current Assignee Address: US CA San Jose
- Agency: Brinks Gilson & Lione
- Main IPC: G06F3/06
- IPC: G06F3/06 ; G06F11/30

Abstract:
A storage system and method are provided for hit-rate-score-based selective prediction of future random read commands. In one embodiment, a storage system is provided comprising a memory configured to store a prior read command data structure, the prior read command data structure comprising a hit-rate score field. The storage system receives a current read command; generates a search sequence of read commands comprising the current read command and at least one prior read command; calculates an index value based on the search sequence; reads a hit-rate score from the hit-rate score field of an entry of the prior read command data structure identified by the index value; determines whether the hit-rate score is less than a threshold; and in response to determining that the hit-rate score is less than the threshold, updates the prior read command data structure with the search sequence. Other embodiments are provided.
Information query