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Ixiasoft
Visible to Intel only — GUID: ipt1487302621897
Ixiasoft
6.2.10. Functional Description of the Arbitration Logic
The system interconnect contains arbitration nodes at each point where multiple packets might demand the same resource. Each arriving packet has a priority. When multiple packets of different priorities arrive simultaneously at a node, the arbitration logic grants the resource to the highest-priority packet.
If there are simultaneous packets with the same priority, the system interconnect uses a simple round-robin (least recently used) algorithm to select the packet.
Each packet's priority is determined by urgency, pressure, and hurry, as described in "QoS Mechanisms".