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Optimize system performance with PCIe
Author: Akber Kazmi, Jack Regula

PCIe 2.0 is optimizing system performance in many ways. However, long read response latencies that reduce aggregate I/O performance can occur in host-centric PCIe systems when even a single endpoint reads ahead very aggressively to ensure it is never "starved" for data. PCIe Gen 2 switches feature Read Pacing to prevent this kind of performance degradation.

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