NIC Ring Buffer & IRQ Affinity Calculator

Calculate ethtool -G ring buffer sizes, RSS queue count, and CPU affinity/irqbalance pinning strategy.

Interface Speed

CPU Cores Available

Traffic Profile

Interrupt Coalescing Target (μs)

Interface Name

Ring Buffer vs Drop Rate Trade-off

Ring Size	Latency Impact	Drop Risk	Use Case
256	Very low	High (burst drops)	Real-time, low latency priority
512	Low	Medium	Latency-sensitive RPC
1024	Medium	Low	General purpose
2048	Medium-high	Very low	Bulk transfer, 10Gbps+
4096	High (adds latency)	Minimal	100Gbps, sustained PPS