基于軟硬件協(xié)同設(shè)計(jì)的閃存存儲(chǔ)系統(tǒng)關(guān)鍵技術(shù)研究與實(shí)現(xiàn)
發(fā)布時(shí)間：2018-09-06 17:23
【摘要】：隨著移動(dòng)設(shè)備、社交網(wǎng)絡(luò)、物聯(lián)網(wǎng)等多種應(yīng)用的蓬勃發(fā)展,人類社會(huì)產(chǎn)生的數(shù)據(jù)呈爆炸式增長(zhǎng)。以海量數(shù)據(jù)為基礎(chǔ)的數(shù)據(jù)密集型應(yīng)用的出現(xiàn),不僅對(duì)存儲(chǔ)系統(tǒng)的容量提出了更高的要求,還在帶寬、延遲、功耗、可靠性等方面提出了更高的要求。由于磁盤機(jī)械裝置的限制,基于磁盤的存儲(chǔ)系統(tǒng)已無(wú)法滿足大規(guī)模數(shù)據(jù)處理在延遲、帶寬、功耗等方面的需求。閃存以其高性能、非易失、低功耗、耐振動(dòng)等特點(diǎn)已被廣泛部署在高端存儲(chǔ)系統(tǒng)中。另外,文件系統(tǒng)包含更多的語(yǔ)義信息,在設(shè)計(jì)閃存存儲(chǔ)體控制器時(shí),如果能充分利用文件系統(tǒng)的信息,將更好地提高存儲(chǔ)系統(tǒng)的性能。本文針對(duì)閃存存儲(chǔ)系統(tǒng),通過文件系統(tǒng)與閃存存儲(chǔ)體控制器協(xié)同設(shè)計(jì),對(duì)控制器的映射表、通道并行和熱點(diǎn)數(shù)據(jù)管理進(jìn)行優(yōu)化。本文主要工作及創(chuàng)新點(diǎn)如下:1.研究了閃存存儲(chǔ)體控制器的功能架構(gòu),設(shè)計(jì)實(shí)現(xiàn)了閃存芯片同步操作控制器模塊,閃存轉(zhuǎn)換層(FTL)模塊和熱點(diǎn)數(shù)據(jù)管理模塊。2.針對(duì)如何有效利用DRAM空間問題,提出了基于協(xié)同設(shè)計(jì)的映射表優(yōu)化方法,在閃存控制器層實(shí)現(xiàn)塊映射,文件系統(tǒng)層實(shí)現(xiàn)頁(yè)粒度管理。減少映射表的同時(shí)保持存儲(chǔ)系統(tǒng)高性能。3.針對(duì)傳統(tǒng)閃存存儲(chǔ)體通道分配策略簡(jiǎn)單的問題,提出了基于協(xié)同設(shè)計(jì)的通道并行優(yōu)化方法,閃存控制器層實(shí)現(xiàn)指定通道寫功能,文件系統(tǒng)層實(shí)現(xiàn)通道分配功能,并以此為基礎(chǔ)實(shí)現(xiàn)了三種通道分配策略,提高通道并行性。4.針對(duì)傳統(tǒng)閃存存儲(chǔ)體熱點(diǎn)數(shù)據(jù)識(shí)別精度不高且占用存儲(chǔ)體控制器資源的問題,提出了基于協(xié)同設(shè)計(jì)的熱點(diǎn)數(shù)據(jù)管理優(yōu)化方法,充分利用文件系統(tǒng)的信息進(jìn)行熱點(diǎn)數(shù)據(jù)識(shí)別,控制器層利用文件系統(tǒng)下發(fā)的熱點(diǎn)語(yǔ)義進(jìn)行緩存管理,提高閃存存儲(chǔ)體控制器的緩存命中率。
[Abstract]:With the rapid development of mobile devices, social networks, Internet of things and other applications, the data generated by human society is exploding. The emergence of data-intensive applications based on mass data not only requires higher capacity of storage system, but also requires higher bandwidth, delay, power consumption, reliability and so on. Due to the limitation of disk mechanical devices, the disk based storage system can no longer meet the requirements of large-scale data processing in terms of delay, bandwidth, power consumption and so on. Flash memory has been widely used in high-end memory systems because of its high performance, non-volatile, low power consumption, vibration resistance and so on. In addition, the file system contains more semantic information. In the design of flash memory controller, if the file system information can be fully utilized, the performance of the storage system will be improved better. In this paper, the mapping table, channel parallelism and hot data management of the controller are optimized through the collaborative design of the file system and the flash memory controller for the flash memory storage system. The main work and innovation of this paper are as follows: 1. The function architecture of flash memory controller is studied, and the synchronous operation controller module of flash memory chip, the (FTL) module of flash memory conversion layer and the hot data management module. 2 are designed and implemented. Aiming at the problem of how to utilize DRAM space effectively, this paper presents an optimization method of mapping table based on collaborative design, which implements block mapping in flash controller layer and page granularity management in file system layer. Reduce mapping table while keeping storage system high performance. 3. Aiming at the problem of simple channel allocation strategy of traditional flash memory, a parallel channel optimization method based on collaborative design is proposed. Flash memory controller layer realizes channel write function and file system layer realizes channel allocation function. On this basis, three channel allocation strategies are implemented to improve channel parallelism. Aiming at the problem that the recognition accuracy of traditional flash memory hot spot data is not high and the storage controller resources are occupied, an optimization method of hot spot data management based on collaborative design is proposed, which makes full use of the information of file system to identify hot spot data. In order to improve the cache hit rate of flash memory controller, the controller layer uses the hot spot semantics of file system to manage the cache.
【學(xué)位授予單位】：國(guó)防科學(xué)技術(shù)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2013
【分類號(hào)】：TP333
，
本文編號(hào)：2227033
[Abstract]:With the rapid development of mobile devices, social networks, Internet of things and other applications, the data generated by human society is exploding. The emergence of data-intensive applications based on mass data not only requires higher capacity of storage system, but also requires higher bandwidth, delay, power consumption, reliability and so on. Due to the limitation of disk mechanical devices, the disk based storage system can no longer meet the requirements of large-scale data processing in terms of delay, bandwidth, power consumption and so on. Flash memory has been widely used in high-end memory systems because of its high performance, non-volatile, low power consumption, vibration resistance and so on. In addition, the file system contains more semantic information. In the design of flash memory controller, if the file system information can be fully utilized, the performance of the storage system will be improved better. In this paper, the mapping table, channel parallelism and hot data management of the controller are optimized through the collaborative design of the file system and the flash memory controller for the flash memory storage system. The main work and innovation of this paper are as follows: 1. The function architecture of flash memory controller is studied, and the synchronous operation controller module of flash memory chip, the (FTL) module of flash memory conversion layer and the hot data management module. 2 are designed and implemented. Aiming at the problem of how to utilize DRAM space effectively, this paper presents an optimization method of mapping table based on collaborative design, which implements block mapping in flash controller layer and page granularity management in file system layer. Reduce mapping table while keeping storage system high performance. 3. Aiming at the problem of simple channel allocation strategy of traditional flash memory, a parallel channel optimization method based on collaborative design is proposed. Flash memory controller layer realizes channel write function and file system layer realizes channel allocation function. On this basis, three channel allocation strategies are implemented to improve channel parallelism. Aiming at the problem that the recognition accuracy of traditional flash memory hot spot data is not high and the storage controller resources are occupied, an optimization method of hot spot data management based on collaborative design is proposed, which makes full use of the information of file system to identify hot spot data. In order to improve the cache hit rate of flash memory controller, the controller layer uses the hot spot semantics of file system to manage the cache.
【學(xué)位授予單位】：國(guó)防科學(xué)技術(shù)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2013
【分類號(hào)】：TP333
，
本文編號(hào)：2227033
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