Performance Characterization of Open-Source IO Caching Modules on Midrange Storage Systems

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Peykani Sani, Pouria | 2023

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Type of Document: M.Sc. Thesis
Language: Farsi
Document No: 56087 (19)
University: Sharif University of Technology
Department: Computer Engineering
Advisor(s): Asadi, Hossein
Abstract:
Nowadays, design and development of high performance storage subsystems have been a crucial step in data-intensive computer systems. One of the solutions for improving the overall performance of data storage systems is to use emerging flash-based memories as an I/O cache. OpenCAS, EnhanceIO, and DM-cache are well-known I/O cache modules with different architectures. None of the previous works studied the performance of these I/O cache modules in detail. This research evaluates the performance of I/O cache modules under the real and synthetic workloads and tries to analyze the observed behavior based on their high-level architecture. In addition, we propose some insights about how to improve I/O cache architecture. Our results show that OpenCAS and EnhanceIO have almost the same performance in most workloads and are slightly better than DM-cache. The performance parameters of an I/O cache can be greatly impacted by its architectural features, especially when dealing with various workloads. Therefore, a well-designed and configured cache architecture can lead to a significant improvement in overall performance
Keywords:
Input/Output Cache ; Characterization ; Storage Systems ; Storage Subsystems Performance