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- W2761492268 abstract "Scale-out distributed storage systems have recently gained high attentions with the emergence of big data and cloud computing technologies. However, these storage systems sometimes suffer from performance degradation, especially when the communication subsystem is not fully optimized. The problem becomes worse as the network bandwidth and its corresponding traffic increase. In this paper, we first conduct an extensive analysis of communication subsystem in Ceph, an object-based scale-out distributed storage system. Ceph uses asynchronous messenger framework for inter-component communication in the storage cluster. Then, we propose three major optimizations to improve the performance of Ceph messenger. These include i) deploying load balancing algorithm among worker threads based on the amount of workloads, ii) assigning multiple worker threads (we call dual worker) per single connection to maximize the overlapping activity among threads, and iii) using multiple connections between storage servers to maximize bandwidth usage, and thus reduce replication overhead. The experimental results show that the optimized Ceph messenger outperforms the original messenger implementation up to 40% in random writes with 4K messages. Moreover, Ceph with optimized communication subsystem shows up to 13% performance improvement as compared to original Ceph." @default.
- W2761492268 created "2017-10-20" @default.
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- W2761492268 date "2017-09-01" @default.
- W2761492268 modified "2023-09-24" @default.
- W2761492268 title "Performance Optimization of Communication Subsystem in Scale-Out Distributed Storage" @default.
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- W2761492268 doi "https://doi.org/10.1109/fas-w.2017.157" @default.
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