Invention Grant
- Patent Title: Dynamic command scheduling for storage system
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Application No.: US17330286Application Date: 2021-05-25
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Publication No.: US11645217B2Publication Date: 2023-05-09
- Inventor: Scott Jinn , Yun-Tzuo Lai , Haining Liu , Yuriy Pavlenko
- 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: Morgan, Lewis & Bockius LLP
- Main IPC: G06F13/26
- IPC: G06F13/26 ; G06F13/374 ; G06F9/48 ; G06F9/50 ; H04W74/00 ; H04W74/08

Abstract:
The subject technology provides for managing a data storage system. Commands are identified into as a first command type or a second command type. The commands identified as the first command type are assigned to a first queue, and the commands identified as the second command type are assigned to a second queue. After the commands from the first queue and the commands from the second queue are processed based on a scheduling ratio over a predetermined period of time, a write amplification factor, number of host read commands, and number of host write commands during the predetermined period of time are determined. The scheduling ratio is updated based on the write amplification, the number of host read commands, the number of host write commands, and a predetermined scheduling ratio factor. Subsequent commands are processed from the first queue and the second queue based on the updated scheduling ratio.
Public/Granted literature
- US20210279196A1 Dynamic Command Scheduling for Storage System Public/Granted day:2021-09-09
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