Invention Grant
- Patent Title: Using a PID controller to opportunistically compress more data during garbage collection
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Application No.: US15991976Application Date: 2018-05-29
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Publication No.: US10678436B1Publication Date: 2020-06-09
- Inventor: Yanwei Jiang , Aswin Karumbunathan , Naveen Neelakantam , Kiron Vijayasankar , Bo Feng , Joern Engel
- Applicant: PURE STORAGE, INC.
- Applicant Address: US CA Mountain View
- Assignee: Pure Storage, Inc.
- Current Assignee: Pure Storage, Inc.
- Current Assignee Address: US CA Mountain View
- Agency: Womble Bond Dickinson (US) LLP
- Agent Daniel E. Ovanezian
- Main IPC: G06F3/06
- IPC: G06F3/06 ; H03M7/30
Abstract:
A storage system performs garbage collection with data compression. A storage controller in the storage system determines a garbage collection directive by evaluating the amount of reclaimable space relative to a target amount of reclaimable space. Garbage collection is performed using data compression tunable to compression aggressiveness according to the garbage collection directive.
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