Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 82 for “"main memory"”.
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Application of minimal perfect hashing in main memory indexing
Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1994.
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Building a columnar database on shared main memory-based storage
… or a shared-nothing architecture. In contrast, main memory-based parallel database management systems are dominated solely by the shared-nothing approach as it preserves the in-memory performance advantage by processing data locally on each server. We argue that this unilateral development is …
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Reduction in Main Memory Traffic Through the Efficient Use of Local Memory
Memory referencing behavior is analyzed by studying traces for the purpose of developing new local memory structures and management techniques that reduce the traffic to main memory. A novel trace processing technique called flattening reduces the dependence of the results on the underlying …
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Design and evaluation of a benchmark for main memory transaction processing systems
… designed a diverse collection of benchmarks for Main Memory Database Systems (MMDBs) to validate and compare entries in a programming contest. Each entrant to the contest programmed an indexing system optimized for multicore multithread execution. The contest framework provided an API for the …
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Improving Digital Forensics and Incident Analysis in Production Environments by Using Virtual Machine Introspection
Main memory forensics and its special form, virtual machine introspection (VMI), are powerful tools for digital forensics and can be used to improve the security of computer-based systems. However, their use in production systems is often not possible. This work identifies the causes and offers …
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Energy-efficient architectures for chip-scale networks and memory systems using silicon-photonics technology
… the design of both chip-scale networks and main memory systems. Conventional electrical links used in chip-scale networks (0.5-3pJ/bit) and DRAM systems used in main memory (>30pJ/bit) fail to provide sustained performance at low energy budgets. This thesis builds on the promising research …
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On-Disk Sequence Cache (ODSC): Using Excess Disk Capacity to Increase Performance
… operating system, loading applications, and when main memory is limited. Experiments show that our ODSC speeds up application loads by as much as 413%. Our ODSC also reduces the disk access time of the Linux boot by 396%, and speeds up a Linux kernel make by 28%. We also show that an ODSC improves …
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Query Optimization for Relational Database Systems
… attempts to take maximum advantage of available main-memory buffer space.
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Recovery algorithms for in-memory OLTP databases
… our approach on an implementation of TPC-C in a main memory database system (VoltDB), and found that command logging can offer 1.5x higher throughput than a main-memory optimized implementation of ARIES.
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Graph analytics on relational databases
… database, Vertica: disk-based and main-memory based. The disk-based solution stores data for each iteration in relational tables and allows for interleaving SQL queries with graph algorithms. The main-memory approach stores data in memory, allowing faster updates. We applied …
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Predictable and monitored execution for COTS-based real-time embedded systems
… in the avionic, medical and automotive domain are often mixed-criticality systems: they implement different applications with widely varying levels of criticality. Therefore, a key issue is to provide sufficient isolation among different applications. In particular, safety-critical …
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High-dimensional indexing methods utilizing clustering and dimensionality reduction
… Decomposition - CSVD with indexing, Persistent Main Memory - PMM index, and Stepwise Dimensionality Increasing - SDI-tree index. CSVD is an approximate nearest neighbor search method. The performance of CSVD with indexing is studied and the approximation to the distance in original space is …
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A Study of Disk Performance Optimization.
… explores the impact of PCI bus mastering Direct Memory Access (DMA) on the performance of systems with IDE drives. DMA is a data transfer protocol that allows data to be sent directly from an attached device to a computer system’s main memory, thereby reducing CPU overhead. PCI bus mastering …
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Fault-tolerant distributed transactions for partitioned OLTP databases
… store, a specialized TPC-C implementation, a main-memory OLTP database, and a traditional disk-based OLTP database. Second, Dtxn provides a novel concurrency control mechanism called speculative concurrency control, designed for main memory OLTP workloads that are primarily composed of …
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Design of an addressable memory controller.
The main memory is an essential subsystem in a Von Neumann type of stored program machine. Because of the speed gap existence between the processor and the main memor>% there has been a constant need to improve the main memor\' to achieve a better throughput. One method is to use a CAM(Content …
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Scheduling in a Database-Based Distributed Operating System
… stored in a high-performance, distributed, main-memory database management system. Operations on this state will be performed via serverless, stateless tasks. This thesis presents work done to build a preliminary scheduler and to implement and evaluate various global scheduling algorithms. …
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Ray tracing large distributed datasets using ray caches
… cantly larger than can typically be stored in memory on a visualization system. Visualization algorithms then become ine ective and stall since the data must be paged to disk. Recently, in-situ visualization has received renewed attention for visualizing large datasets that are distributed …
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Data mining and database systems: integrating conceptual clustering with a relational database management system.
… DBMS. The presented approach makes the algorithm main memory independent and supports on-line data mining.
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