Abstract
Compared to client SSDs, enterprise SSDs have rigorous performance standards such as high/consistent IOPS and low tail latencies. Unfortunately, we find that existing SSD simulation tools are not appropriate for a simulation of enterprise SSDs, due to lack of a few critical functionalities. We identify three such functionalities – (i) dynamic address allocation, (ii) fine-grained address mapping, and (iii) token-based garbage collection, and present an enterprise SSD simulator (called MQSim-E) by adding them into a widely-used (client) SSD simulator. Through extensive experiments, we demonstrate that our MQSim-E is a more suitable choice for emulating contemporary enterprise SSDs than existing state-of-the-art SSD simulators.
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