公开(公告)号：US20180217951A1

公开(公告)日：2018-08-02

申请号：US15936364

申请日：2018-03-26

Applicant: SanDisk Technologies LLC

Inventor： Shay Benisty ,  Rajesh Koul

IPC: G06F13/16

CPC classification number: G06F13/1642 ,  G06F2213/16 ,  G06F2213/24

Abstract: Methods, systems, and computer readable media for intelligent fetching of storage device commands from submission queues are disclosed. The controller may implement a hierarchical scheme comprising first-level arbitration(s) between submission queues of each of a plurality of input/output virtualization (IOV) functions, and a second-level arbitration between the respective IOV functions. Alternatively, or in addition, the controller may implement a flat arbitration scheme, which may comprise selecting submission queue(s) from one or more groups, each group comprising submission queues of each of the plurality of IOV functions. In some embodiments, the controller implements a credit-based arbitration scheme. The arbitration scheme(s) may be modified in accordance with command statistics and/or current resource availability.