Optimizing access to memory pages in software-implemented global page cache systems
| Autor: | E. I. Gusev |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
business.industry
Computer science Access method Cloud computing oracle rac computer.software_genre Replication (computing) Oracle распределённая страница lcsh:QA75.5-76.95 Relational database management system Shared nothing architecture General Earth and Planetary Sciences Distributed memory Cache lcsh:Electronic computers. Computer science business computer General Environmental Science Computer network |
| Zdroj: | Труды Института системного программирования РАН, Vol 30, Iss 1, Pp 161-182 (2018) |
| ISSN: | 2220-6426 2079-8156 |
| Popis: | This article is based on a thesis “Techniques of organizations shared access to distributed memory pages in cloud computing systems”, defensed in Igor Sikorsky Kyiv Polytechnic Institute in 2017. The paper describes distributed pages processing in Oracle Real Application Clusters (Oracle RAC) and compares it with other known processing methods. The comparison comprises analysis of different architectures (including shared nothing, shared disk and “based on a replication” architecture) in the context of SQL query processing and asserts reasonableness of distributed pages approach (also known as Global Cache Fusion) choice for cloud DBMS. As a result researching the Global Cache Fusion approach there was revealed main drawback of Oracle RAC systems - “increasing queue problem”: impossibility process requests after intensity of requests exceeds threshold intensity, which is inversely proportional packet sent time between nodes. To eliminate “increasing queue problem” during distributed page access the new access method is proposed, which is based on the initiation of one more page state - the "unloading" state, which increases the efficiency of processing distributed pages by reducing the number of transfers between nodes during hot page processing. The considered method can be used not only in cloud DBMS but also in other cloud systems in a case if they use page-organized distributed memory architecture. |
| Databáze: | OpenAIRE |
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