Abstract
This paper presents an SSD-based Block I/O Scheduler, short for SBIOS. SBIOS fully exploits the internal parallelism to improve the system performance. It dispatches the read requests to different blocks to make full use of SSD internal parallelism. For write requests, it tries to dispatch write requests to the same block to alleviate the block cross penalty and garbage collection overhead. Moreover, SBIOS introduces the conception of batch processing and separates read and write requests to avoid read write interference. The evaluation results show that compared with other I/O schedulers in the Linux kernel, SBIOS reduces the average response time significantly. Consequently, the performance of the SSD-based storage systems is improved.
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Acknowledgments
This work is supported by the National Natural Science Foundation of China under Grant No. 61100033, No. 61472336 and No. 61402385, National Key Technology R&D Program Foundation of China (No. 2015BAH16F02), Fundamental Research Funds for the Central Universities (No. 20720140515).
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Guo, J., Hu, Y., Mao, B. (2015). Enhancing I/O Scheduler Performance by Exploiting Internal Parallelism of SSDs. In: Wang, G., Zomaya, A., Martinez, G., Li, K. (eds) Algorithms and Architectures for Parallel Processing. ICA3PP 2015. Lecture Notes in Computer Science(), vol 9531. Springer, Cham. https://doi.org/10.1007/978-3-319-27140-8_9
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DOI: https://doi.org/10.1007/978-3-319-27140-8_9
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