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Front. Inform. Technol. Electron. Eng.  2010, Vol. 11 Issue (6): 418-424    DOI: 10.1631/jzus.C0910505
    
A fast and simple system performance emulator for enhanced solid state disks: a case study of long read operations
Do Yeun Kim1, Chanik Park2, Eui-Young Chung3, Sung Woo Chung*,1
1 Division of Computer and Communication Engineering, Korea University, Seoul 13-713, Korea 2 Samsung Electronics, Yongin-City, Kyunggi-Do 446-701, Korea, School of Electrical and Electronic Engineering, Yonsei University, Seoul 120-749, Korea
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Abstract  In this paper, we propose a fast and simple system emulator, called a system performance emulator (SPE), to evaluate long read operations. The SPE estimates how much system-wide performance is enhanced by using a faster solid state disk (SSD). By suspending a CPU for a certain time during direct memory access (DMA) transfer and subtracting this suspended time from the total DMA time, the SPE estimates the improvement in system performance expected from an enhanced SSD prior to its manufacture. We also examine the relation between storage performance and system performance using the SPE.

Key words： Solid state disk (SSD)      Performance emulator      System performance      Direct memory access (DMA)      Operating system     
Received: 16 August 2009      Published: 02 June 2010
CLC:  TP333  
Fund:  Project supported by the Second Brain Korea 21 Project and Samsung Electronics
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Do Yeun Kim
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Do Yeun Kim, Chanik Park, Eui-Young Chung, Sung Woo Chung. A fast and simple system performance emulator for enhanced solid state disks: a case study of long read operations. Front. Inform. Technol. Electron. Eng., 2010, 11(6): 418-424.

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http://www.zjujournals.com/xueshu/fitee/10.1631/jzus.C0910505     OR     http://www.zjujournals.com/xueshu/fitee/Y2010/V11/I6/418


A fast and simple system performance emulator for enhanced solid state disks: a case study of long read operations

In this paper, we propose a fast and simple system emulator, called a system performance emulator (SPE), to evaluate long read operations. The SPE estimates how much system-wide performance is enhanced by using a faster solid state disk (SSD). By suspending a CPU for a certain time during direct memory access (DMA) transfer and subtracting this suspended time from the total DMA time, the SPE estimates the improvement in system performance expected from an enhanced SSD prior to its manufacture. We also examine the relation between storage performance and system performance using the SPE.

关键词： Solid state disk (SSD),  Performance emulator,  System performance,  Direct memory access (DMA),  Operating system 
[1] Hui Sun, Xiao Qin, Chang-sheng Xie. Exploring optimal combination of a file system and an I/O scheduler for underlying solid state disks[J]. Front. Inform. Technol. Electron. Eng., 2014, 15(8): 607-621.