International Business Machines Corporation

Steven Paul Woolet

Clark Debs Jeffries

Marco C Heddes

Metin Aydemir

Andrew J Rindos, Iii

A data flow control method and system within a data switch. The data switch includes a plurality of input sections each having an associated input buffer and each transmitting data to an output section. In response to a detection of congestion within the output section, data transmissions from the plurality of input sections to the output section are paused. Input buffer occupancies of each of the input sections are then determined. Thereafter, and in response to a backpressure relief signal, the restart of said data transmission from each of the input sections to the output section is delayed in inverse proportion to each of the determined input buffer occupancies.

Delayed-start method for minimizing internal switch congestion

An improved data collection method and apparatus wherein the data is accumulated in groups of storage means as the data is generated, and the data in each group of storage means is transferred to another store at a rate that is determined at least in part by the rate at which data was accumulated. In the event that data is generated faster than it is being transferred, data is not lost but data granularity is reduced. After being transferred to another store, the data is available for statistical analysis by application programs.

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Raleigh, NC, United States of America

Steven Paul Woolet