CPU Monitoring and IRQ Affinity Tuning for Performance Testing

During performance testing, the article explains how high soft‑interrupt CPU usage can be diagnosed via /proc/interrupts, and demonstrates binding network‑card interrupt queues to individual CPU cores using commands and scripts, resulting in balanced CPU load and reduced interrupt overhead.

CPU MonitoringIRQ AffinitySoft Interrupts

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CPU Monitoring and IRQ Affinity Tuning for Performance Testing

Vipshop Quality Engineering

May 26, 2017 · Operations

Boost Linux Network Performance with NIC Multi‑Queue and IRQ Affinity

This article explains why a Janus gateway’s QPS stalled under large payloads, how enabling NIC multi‑queue and binding interrupts to specific CPUs (IRQ affinity) resolves the bottleneck, and provides practical commands and a script for Linux network interrupt tuning.

IRQ AffinityInterruptsLinux

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Boost Linux Network Performance with NIC Multi‑Queue and IRQ Affinity

MaGe Linux Operations

Apr 17, 2016 · Operations

Balancing Hardware Interrupts Across CPUs with SMP IRQ Affinity on Linux

This guide explains what hardware interrupts are, how SMP IRQ affinity works, and provides step‑by‑step Linux commands to assign specific device IRQs—such as network or disk—to individual CPU cores, improving multi‑core server performance and throughput.

IRQ AffinityLinuxSMP

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Balancing Hardware Interrupts Across CPUs with SMP IRQ Affinity on Linux