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 “"FreeBSD"”.
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Using Data Mining Techniques to Improve Software Reliability
… characteristics of copy-paste in Linux and FreeBSD.
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Systém kontroly běhu vzdálených strojů a služeb
… s koordin'atorem) v jazyce C pro operační systém FreeBSD. Konkrétní testovací metody jsou implementovány jako samostatně běžící moduly, komunikující s jádrem sít'ovým protokolem. V případě zjištěné závady jádro odešle informaci daným způsobem stanoveným osobám. Konkrétní metody zasílání informací …
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Congestion-resilient TCP
… We implement this XOR-Packets enhancement in the FreeBSD network stack and show that it guarantees the ability to reconstruct any single packet loss without the need for retransmission. Furthermore, in the unlikely best case, up to a third of the TCP stream can be lost without the need for …
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Exploitation from Malicious PCI Express Peripherals
… that are shared by all devices; Linux and FreeBSD map windows into host memory separately for each device, but only if poorly documented boot flags are used. These OSs make no effort to ensure that only data that should be visible to the devices is in the mapped windows. We created novel …
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Analysing the Resolution of Security Bugs in Software Maintenance
… case studies, Samba, MozillaFirefox, RedHat, FreeBSD and Mozilla. The second null hypothesis is tested by comparing the results of fixing security and non-security bugs from the Samba and MozillaFirefox case studies. Statistically significant results suggest that security bugs are triaged in a …
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Herodotus : a peer-to-peer Web archival system
… lookup service. It is written in C++ on FreeBSD. Our analysis based on an estimated size of the World Wide Web shows that a set of 20,000 nodes would be required to archive the entire web, assuming that each node has a typical home broadband Internet connection and contributes 100 GB of …
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PCI Express multi-root switch reconfiguration during system operation
… switch in a multi-host environment on a FreeBSD platform in a live system. We study modifications required of the PCI bus and system resources. We also detail the development of a device driver to handle dynamic reconfiguration of the switch and the system's PCI bus data structures.
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Network Simulation Cradle
… that supports the kernel source code from FreeBSD, OpenBSD and Linux to make the network stacks from these systems available to the popular network simulator ns-2. Simulating with these real world network stacks reveals situations where the result differs significantly from ns-2's TCP …
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On Intelligent Mitigation of Process Starvation In Multilevel Feedback Queue Scheduling
… These schedulers, including Linux CFS, FreeBSD Ule, and the Solaris Fair Share Scheduler, are all effective at favoring interactive processes under starvation conditions.</p> <p>Sometimes it’s not desirable that long-running processes be sacrificed altogether, but none of these …
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Hydra: loosely coupling the graphics pipeline to facilitate digital preservation.
… platforms such as the PlayStation 4 (Orbis OS, a FreeBSD derivative), through to more exotic platforms such as Plan 9 from Bell Laboratories. It can do this because it does not rely on a complex emulator-specific virtual driver stack. This PhD thesis provides the research undertaken for Hydra, …
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CheriOS: Designing an untrusted single-address-space capability operating system utilising capability hardware and a minimal hypervisor
… webserver, NGINX, atop both CheriOS and FreeBSD and show improvements in performance ranging from 3x to 6x when running on a small-scale low-power FPGA implementation of CHERI-MIPS.
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Settling-Time Improvements in Positioning Machines Subject to Nonlinear Friction Using Adaptive Impulse Control
A new method of adaptive impulse control is developed to precisely and quickly control the position of machine components subject to friction. Friction dominates the forces affecting fine positioning dynamics. Friction can depend on payload, velocity, step size, path, initial position, temperature, …