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Issue No. 01 - January-June (2010 vol. 9)
ISSN: 1556-6056
pp: 9-12
Seon-yeong Park , Korea Advanced Institute of Science and Technology, Daejeon
Euiseong Seo , Ulsan National Institute of Science and Technology, Ulsan
Ji-Yong Shin , Korea Advanced Institute of Science and Technology, Daejeon
Seungryoul Maeng , KAIST, Daejeon
Joonwon Lee , Sungkyunkwan University, Suwon
For the last few years, the major driving force behind the rapid performance improvement of SSDs has been the increment of parallel bus channels between a flash controller and flash memory packages inside the solid-state drives (SSDs). However, there are other internal parallelisms inside SSDs yet to be explored. In order to improve performance further by utilizing the parallelism, this paper suggests request rescheduling and dynamic write request mapping. Simulation results with real workloads have shown that the suggested schemes improve the performance of the SSDs by up to 15% without any additional hardware support.
Input/Output Devices, Storage Management, Secondary storage, Parallel systems, Simulation

J. Shin, J. Lee, S. Park, E. Seo and S. Maeng, "Exploiting Internal Parallelism of Flash-based SSDs," in IEEE Computer Architecture Letters, vol. 9, no. , pp. 9-12, 2010.
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