Flow control of large sequential host read commands based on a queue threshold
US11379151B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 31, 2020 |
| Grant date | Jul 5, 2022 |
| Priority date | — |
| Expiry date | Aug 28, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2212/7208
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Aspects of a storage device are provided which use flow control to prevent stalling during processing of read requests for a large read command. A controller of the storage device receives a read command for data from a host device, stores in a queue read requests for a portion of the data, and reads the portion of the data from a memory based on the read requests. The controller may store other read requests in the queue for other portions of the data when a number of read requests in the queue does not meet a threshold. Otherwise, the controller refrains from storing other read requests in the queue for other portions of the data when the number of read requests in the queue meets the threshold. The controller may operate similarly with subsequent sequential commands, but may continue to store read requests in the queue for subsequent random commands.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.