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 12 of 12 for “"Context-Switch"”.
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An Empirical Study of the Effects of Context-Switch, Object Distance, and Focus Depth on Human Performance in Augmented Reality
… information requires the user to repeatedly switch eye focus between the two in order to extract information from both environments. Switching eye focus may result in additional time on user tasks and lower task accuracy. Thus, one of the goals of this research was to understand the impact of …
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Transparent spilling and refilling of partitioned overlapping register window register organizations with a remote instruction pointer
… set's organization is at maintaining process context, the fewer the number of memory accesses the processor will need to make. Overlapping register windows have better context maintenance capabilities than single register set organizations, but overlapping register windows also show …
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Nanothreads: Flexible Thread Scheduling
… implementation in Linux 2.4 was used to test context-switch performance amongst comparable thread models. Though, the nanoThread scheduler interface is more complicated than the comparable threading designs presented, the performance improvements shown in this dissertation prove that this more …
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Performance Evaluation of Multiple Register Set Architectures and Cache Memories
… the results vary among programs. The effect of context switch was also measured and found not to be significant.
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Design and Evaluation of an Embedded Real-time Micro-kernel
… It uses the underlying hardware for high-speed context switching between the kernel and applications, which is five times faster than the ordinary context switch. The features of the kernel can be configured according to performance requirements without change to the applications. Along with the …
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Accurate Low-Cost Methods for Performance Evaluation of Cache Memory Systems
… statistically project the results to different context-switch intervals from only one simulation of a small number of samples of a fixed size. A new concept of primed cache is introduced to simulate large caches by the sampling-based method. Finally, a cache model is developed to study the …
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The benefits and costs of writing a POSIX Kernel in a high-level language
… nearly identical system call, page fault, and context switch code paths written in Go and C, the Go version was 5% to 15% slower.
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Reducing exception management overhead with software restart markers
… software restart markers can be used to reduce context switch overhead in a multiprogrammed environment. This thesis demonstrates the applicability of software restart markers to vector, VLIW, and multithreaded architectures. It also contains an implementation of this exception handling approach …
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A Compiler Directed Framework for Parallel Compositional Systems
… as well as threads, with code sharing and fast context switching time similar to threads. Weaves do not require any special support from either the language or application code - practically any code can be weaved. Weaves also include support for fast automatic checkpointing and recovery with no …
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Exploring the Boundaries of Operating System in the Era of Ultra-fast Storage Technologies
… hardware. Hence, the latency due user-kernel context switch caused by system calls and hardware interrupts is no longer negligible as presumed in the era of slower high latency hard disks. Further, the OS storage stack is not designed with multi-core scalability in mind; so with CPU core count …
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Enhancing Software Security through Code Diversification Verification, Control-flow Restriction, and Automatic Compartmentalization
… supporting a limited number of sandboxes, high context-switch overhead, and requiring extensive modifications to the toolchain, jeopardizing maintainability and introducing compatibility issues due to the need for specific hardware. This dissertation describes x86-based Fault Isolation (XFI), an …
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Hardware Support for a Configurable Architecture for Real-Time Embedded Systems on a Programmable Chip
… real-time operating system providing fast context switches. As part of the hardware RTOS, the following have been implemented in hardware: scheduler, register banks, mutex, semaphore, queue, interrupts, event, and others. A novel circuit called the Task-Resource Matrix has been created to …