Invention Grant
- Patent Title: Using history of I/O sizes and I/O sequences to trigger coalesced writes in a non-volatile storage device
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Application No.: US14323921Application Date: 2014-07-03
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Publication No.: US10656842B2Publication Date: 2020-05-19
- Inventor: Akshay Mathur , Dharani Kotte , Chayan Biswas , Baskaran Kannan , Sumant K. Patro
- Applicant: SanDisk Enterprise IP LLC
- Applicant Address: US TX Plano
- Assignee: SANDISK TECHNOLOGIES LLC
- Current Assignee: SANDISK TECHNOLOGIES LLC
- Current Assignee Address: US TX Plano
- Agency: Morgan, Lewis & Bockius LLP
- Main IPC: G06F12/02
- IPC: G06F12/02 ; G06F3/06

Abstract:
Systems, methods and/or devices are used to enable using history of I/O sizes and I/O sequences to trigger coalesced writes in a non-volatile storage device. In one aspect, the method includes (1) receiving a plurality of input/output (I/O) requests to be performed in a plurality of regions in a logical address space of a host, and (2) performing one or more operations for each region of the plurality of regions in the logical address space of the host, including (a) determining whether the region has a history of I/O requests to access data of size less than a predefined small-size threshold during a predetermined time period, (b) determining whether the region has a history of sequential write requests during the predetermined time period, and (c) if both determinations are true, coalescing subsequent write requests to the region.
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