公开(公告)号：US20210365390A1

公开(公告)日：2021-11-25

申请号：US16964134

申请日：2018-06-25

Applicant: Alibaba Group Holding Limited

Inventor： Sheng Qiu ,  Yu Du ,  Fei Liu ,  Shu Li

IPC: G06F13/16

Abstract: One embodiment facilitates measurement of a performance of a storage device. During operation, the system determines a normalized cost for an I/O request, wherein the normalized cost is independent of an access pattern and a type of the I/O request, wherein the normalized cost is indicated by a first number of virtual I/O operations consumed by the I/O request, and wherein a virtual I/O operation is used as a logical unit of cost associated with physical I/O operations. The system identifies a performance metric for the storage device by calculating a second number of virtual I/O operations per second which can be executed by the storage device. The system allocates incoming I/O requests to the storage device based on the performance metric, e.g., to satisfy a Quality of Service requirement, thereby causing an enhanced measurement of the performance of the storage device.

公开(公告)号：US10860492B2

公开(公告)日：2020-12-08

申请号：US16741050

申请日：2020-01-13

Applicant: Alibaba Group Holding Limited

Inventor： Yu Du ,  Ping Zhou ,  Shu Li

IPC: G06F12/0882 ,  G06F12/06 ,  G06F13/16 ,  G06F3/06

Abstract: Disclosed are systems, methods, and apparatuses for providing a high-speed data path to storage devices. In one embodiment, a method is disclosed comprising receiving, by the processor, a data access command, the data access command specifying a location in memory to access data; issuing, by the processor, the data access command to the storage device via a first datapath, the first datapath comprising a non-block datapath; and accessing, by the processor, the non-volatile storage component through the first datapath and the memory, wherein the non-volatile storage component of the storage device is mapped to memory accessible by the processor.