Xilinx Alveo X3522 User Manual page 20

Locality is especially important for good performance:
• Interrupts and applications should be on the same package.
• Multiple receiving threads should share an L3 cache.
The X3522 typically puts a higher load on the CPU than its predecessors, and some rebalancing
might be required:
• Onload sending is always done with CTPIO, and this uses more CPU than sending with DMA.
• The net driver refills the RX ring. Depending on traffic rate, it might need more CPU time:
The net driver must check every frame, even those destined for Onload.
○
Configuring all-but-one core isolated from kernel threads is no longer viable for higher
○
traffic rates.
See Chapter 5: Tuning.
UG1523 (v1.0) October 18, 2022
Alveo X3522 User Guide
Chapter 3: What's New
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