Automatic non-disruptive congestion control of a fabric in a data storage system
US9952776B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 24, 2015 |
| Grant date | Apr 24, 2018 |
| Priority date | — |
| Expiry date | Apr 12, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L43/0894
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Storage node blades in a data storage system utilize queue pairs associated with point-to-point links to perform RDMA transactions with memory components associated with other storage node blades. Higher quality of service queue pairs are used for system message transactions and lower quality of service queue pairs are used for remote direct memory access data. Postings to a relatively higher priority queue pair are reduced when a corresponding relatively lower priority queue pair between the same pair of storage nodes via the same switch is starved of bandwidth. Postings to the relatively higher priority queue pair are increased when bandwidth starvation is remediated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.