Patent Number: 6,338,091

Title: System for optimistic transmission flow control including receiver datadiscards upon inadequate buffering condition

Abstract: A system for a message processing system in which messages are transmittedfrom source nodes to destination nodes. A transmission flow controltechnique is disclosed in which the source node optimistically sendscontrol information and a data portion of a message, and wherein adestination node discards the data portion of the message if it is unableto accommodate it. The destination node, however, retains enough of thecontrol information to identify the message to the source node, and whenthe destination node is subsequently able to accommodate the data portion,the destination node issues a request to the source node to retransmit thedata portion of the message. Discarding of one message is followed bydiscards of sequential messages, until the destination node is able toaccommodate the data portions of messages. The flow control techniquedisclosed herein is used, for example, in an environment where buffers areposted to accommodate messages at the destination node, and isparticularly suited for conditions arising in multi-tasking systems wherethe destination node is generally assumed to be prepared to accommodatedata, however, if not prepared, is likely not prepared for long periods oftime.

Inventors: Desnoyers; Christine M. (Pine Bush, NY), Joseph; Douglas J. (New Fairfield, CT), Kampf; Francis A. (Fairfax, VT), Benner; Alan F. (Poughkeepsie, NY)


International Classification: G06F 15/173 (20060101); G06F 15/16 (20060101); G06F 013/00 ()

Expiration Date: 01/08/2014