Controlling issue rates of requests of varying broadcast scopes in a data processing system

Controlling issue rates of requests of varying broadcast scopes in a data processing system

A coherent data processing system includes a system fabric communicatively coupling a plurality of coherence participants and fabric control logic. The fabric control logic quantifies congestion on the system fabric based on coherence messages associated with commands issued on the system fabric. Ba...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: Shen, Hugh, Williams, Derek E, Drerup, Bernard C, Taft, Alexander Michael, Stuecheli, Jeffrey A, Murray, Luke, Guthrie, Guy L
Format: Patent
Sprache:eng
Schlagworte:
CALCULATING
COMPUTING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
PHYSICS
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Beschreibung
Zusammenfassung:A coherent data processing system includes a system fabric communicatively coupling a plurality of coherence participants and fabric control logic. The fabric control logic quantifies congestion on the system fabric based on coherence messages associated with commands issued on the system fabric. Based on the congestion on the system fabric, the fabric control logic determines a rate of request issuance applicable to a set of coherence participants among the plurality of coherence participants. The fabric control logic issues at least one rate command to set a rate of request issuance to the system fabric of the set of coherence participants.