Interrupt Coalescing

Interrupt coalescing, also known as interrupt moderation, is a technique in which events which would normally trigger a hardware interrupt are held back, either until a certain amount of work is pending, or a timeout timer triggers. Used correctly, this technique can reduce interrupt load by up to an order of magnitude, while only incurring relatively small latency penalties.

NVMe feature: Interrupt Coalescing


  1. NVMe 1.3 spec
  2. Optimizing Storage Performance with Calibrated Interrupts
  3. wikiwand:Interrupt coalescing