Nutanix, Inc.
Elastic method of remote direct memory access memory advertisement

Abstract:

Systems and methods for demand-based remote direct memory access buffer management. A method embodiment commences upon initially partitioning a memory pool at a computer that is to receive memory contents from a sender. The memory pool is partitioned into memory areas that comprise a plurality of different sized buffers that serve as target buffers for one or more direct memory access data transfer operations from the data sources. An initial first set of buffer apportionments are associated with each one of the one or more data sources and those initial sets are advertised to the corresponding data sources. Over time, based on messages that have been loaded into the receiver's memory, the payload sizes of the messages are observed. Based on the observed the demand for buffers that are used for the message payload, the constituency of the advertised buffers can grow or shrink elastically as compared to previous advertisements.