Validate the I/O completion framework across broader storage conditions

Validate the device-completion model and cross-layer wait-chain analysis across more SSDs, mixed read/write workloads, and shared-device interference scenarios.

Background

The paper develops a host-visible device-completion model based on first-completion wait and finite-batch completion capacity, and connects it to upper-layer waiting through folio--bio--request mappings. Its empirical validation is concentrated on a limited set of SSD configurations and controlled read workloads. The authors explicitly identify broader validation across heterogeneous devices, mixed workloads, and contention from shared-device use as unresolved future work.

Extending the evaluation to these settings would test whether the calibrated completion parameters and cross-layer predictions remain reliable when read and write traffic interact, multiple tenants compete for device resources, and device characteristics vary beyond the measured platforms.