inter-flow-interference · research · also SSD workload interference

Inter-flow interference

Inter-flow interference is the change in one I/O flow's behavior caused by other flows sharing storage resources.

Separate host submission queues can still feed shared mapping, cache, scheduling and flash resources. MQSim explicitly models those boundaries. Equal request counts do not establish equal internal work. [1]

An observed slowdown does not identify its cause by itself. Keep isolated baselines, load generation and device preparation comparable before attributing a difference to a co-running flow. [2]

Relations

related

Slowdown fairness, NVMe, SSD preconditioning, Garbage collection (flash)

Citations

1. Tavakkol et al. MQSim: A Framework for Enabling Realistic Studies of Modern Multi-Queue SSD Devices. FAST 2018, sections 3-6 and Appendix A. (accessed 2026-10-20)
2. Hesela: Sharing an SSD: who pays for the slowdown? (accessed 2026-10-20)

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