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Research and Implementation for the Key Technologies of RAM Grid

Author: XieJianCong
Tutor: XiaoZuo
School: National University of Defense Science and Technology
Course: Computer Science and Technology
Keywords: Memory grid Memory resource sharing Data-intensive Random disk access Function intercepted
CLC: TP333.1
Type: Master's thesis
Year: 2007
Downloads: 30
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Abstract


With the development of computer technology , the CPU and the system main memory performance has been greatly improved. IO device development is lagging behind , however , the disk performance is becoming a bottleneck affecting the overall performance of the computer . Has frequent random disk IO data -intensive applications , such as web servers and database systems , the huge disk access delays will seriously affect application performance . IO performance in order to improve the system , our group proposed in previous studies based on the concept of memory grid , the performance of memory - intensive applications to solve the problem provides theoretical support for the sharing and use of memory resources in the Internet . However , how to verify the correctness of the theory of memory grid , the memory grid method how to prove beneficial for the overall performance of the system , we must rely on the practice to be described . In this paper, the existing memory grid system theory, its key technologies , and memory grid system prototype realization . In order to be able to make the system during operation in a \scalability , this paper presents a dynamic program execution based on function intercepted flow modification method , the method can be modified during the execution of the system function does not modify the source code of the operating system ; effective organization and management in order to be able to cache data In this paper, a cache resources based on Hash chain and LRU chain organization and management methods , the method so that the system can quickly find and replace data block ; enables data updates do not affect system performance , this paper proposes the use of kernel thread data cache asynchronous write , the method can make the system during data update performance impact is minimized. The test results indicate that , for a lot of disk random access memory grid can effectively improve the overall system performance .

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CLC: > Industrial Technology > Automation technology,computer technology > Computing technology,computer technology > Electronic digital computer (not a continuous role in computer ) > Memory > In the internal memory (main memory ) General
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