Improving the SSD Performance by Exploiting Request Characteristics and Internal Parallelism
Improving the SSD Performance by Exploiting Request Characteristics and Internal Parallelism
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利用请求特征和内部并行性提高SSD性能
DOI:
10.1109/tcad.2017.2697961
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发表时间:
2018-02
期刊:
影响因子:
--
通讯作者:
Lide Duan
中科院分区:
文献类型:
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作者:
Bo Mao;Suzhen Wu;Lide Duan
With the explosive growth in the data volume, the I/O bottleneck has become an increasingly daunting challenge for big data analytics. It is urgent and important to introduce high-performance flash-based solid state drives (SSDs) into the storage systems. However, since the existing systems are primarily designed for conventional magnetic hard disk drives, directly incorporating SSDs in the existing systems cannot fully exploit SSDs’ performance advantages. In this paper, we propose a new I/O scheduler for SSDs, namely Amphibian, that exploits the high-level request characteristics and low-level parallelism of flash chips to improve the performance of SSD-based storage systems. Amphibian includes two performance enhancement schemes: 1) size-based request ordering, which prioritizes requests with small sizes in processing and 2) garbage collection (GC)-aware request dispatching that delays issuing requests to flash chips that are in the GC state. These two schemes employed in Amphibian significantly reduce the average waiting times of the requests from the host. Our extensive evaluation results derived from three types of SSDs show that, compared with the existing I/O schedulers, Amphibian greatly improves both throughput and average response times for SSD-based storage systems, thus improving the I/O performance of the systems.
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DOI:
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发表时间:
2016-02
期刊:
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影响因子:
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发表时间:
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期刊:
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2010-12
期刊:
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影响因子:
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DOI:
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发表时间:
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期刊:
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影响因子:
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DOI:
10.1109/hpca.2014.6835961
发表时间:
2014-06
期刊:
2014 IEEE 20th International Symposium on High Performance Computer Architecture (HPCA)
影响因子:
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作者:
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通讯作者:
Myoungsoo Jung;M. Kandemir