Sansay Overview Feb 2013
... • VSXi “Network License Zone” shares a pool of session capacity across a network of VSXi hardware • Better support for geographic redundancy and distributed hardware • Shown below: 6 nodes in 3 high availability pairs supporting 3 interconnect points - pool of sessions shared across all nodes ...
... • VSXi “Network License Zone” shares a pool of session capacity across a network of VSXi hardware • Better support for geographic redundancy and distributed hardware • Shown below: 6 nodes in 3 high availability pairs supporting 3 interconnect points - pool of sessions shared across all nodes ...
PPT - Defcon
... • To prevent the process from freezing – The LINUX scheduler walks the list of task_struct’s to calculate the goodness value of the process to decide rather to schedule it or not. – The LINUX scheduler must be modified to allocate time quantums to the parent of process of PID 0 ...
... • To prevent the process from freezing – The LINUX scheduler walks the list of task_struct’s to calculate the goodness value of the process to decide rather to schedule it or not. – The LINUX scheduler must be modified to allocate time quantums to the parent of process of PID 0 ...
Multiple Processor Systems
... processing units (CPUs) within a single computer system. The term also refers to the ability of a system to support more than one processor and/or the ability to allocate tasks between them. • Applications in a multi-processing system are broken to smaller routines that run independently. The operat ...
... processing units (CPUs) within a single computer system. The term also refers to the ability of a system to support more than one processor and/or the ability to allocate tasks between them. • Applications in a multi-processing system are broken to smaller routines that run independently. The operat ...
Module 3: Operating
... small to accommodate all data and programs permanently, the computer system must provide secondary storage to back up main memory. Most modern computer systems use disks as the principle on-line storage medium, for both programs and data. The operating system is responsible for the following act ...
... small to accommodate all data and programs permanently, the computer system must provide secondary storage to back up main memory. Most modern computer systems use disks as the principle on-line storage medium, for both programs and data. The operating system is responsible for the following act ...
BIOS (Basic Input Output Service)
... • A basic software program containing all BIOS functions is permanently stored in the ROM. • This software functions as a basic operating system. • Is responsible for starting the PC. • This hardware integrated with software is also referred to as firmware. ...
... • A basic software program containing all BIOS functions is permanently stored in the ROM. • This software functions as a basic operating system. • Is responsible for starting the PC. • This hardware integrated with software is also referred to as firmware. ...
Safe and Protected Execution in Adaptive Architectures
... techniques for safe and protected execution in statically and dynamically configurable systems • Develop architectural classifications for mechanisms which successively greater levels of safety for both statically and dynamically configurable systems • => Understand the protection / validation impli ...
... techniques for safe and protected execution in statically and dynamically configurable systems • Develop architectural classifications for mechanisms which successively greater levels of safety for both statically and dynamically configurable systems • => Understand the protection / validation impli ...
Control plane
... Shortest Paths • Shortest path(s) between each pair of nodes – Separate shortest-path tree rooted at each node – Minimum hop count or minimum sum of edge weights ...
... Shortest Paths • Shortest path(s) between each pair of nodes – Separate shortest-path tree rooted at each node – Minimum hop count or minimum sum of edge weights ...
CS 571 Operating Systems - GMU Computer Science
... • Faster (really?) and more energy-efficient than multiple chips with single cores ! ...
... • Faster (really?) and more energy-efficient than multiple chips with single cores ! ...
Operating Systems
... A Graphical User Interface makes it easier to perform certain tasks. Drop down menus show options that are ...
... A Graphical User Interface makes it easier to perform certain tasks. Drop down menus show options that are ...
Presentation - International Spacewire Conference 2008
... Link and Router Configuration Link configuration (all devices) ...
... Link and Router Configuration Link configuration (all devices) ...
Linux+ Guide to Linux Certification
... • Advantages: – More flexible and more reliable than circuit switching ...
... • Advantages: – More flexible and more reliable than circuit switching ...
Ad hoc on-demand Distance Vector Routing Protocol Based on Load Balance
... throughput of networks, by selecting the stable path. The results is as table 4. The AODV is to choose the shortest path, but these paths may be unstable and failed soon. We can get the conclusion that the AODVDF can assume a greater load than the standard aodv protocol in sparse node scene. ...
... throughput of networks, by selecting the stable path. The results is as table 4. The AODV is to choose the shortest path, but these paths may be unstable and failed soon. We can get the conclusion that the AODVDF can assume a greater load than the standard aodv protocol in sparse node scene. ...
A Pattern Language for Secure Operating System Architectures
... applied when calling another process is protected entry points. • A process calling another process can only enter this process at pre-designed entry points. This prevents bypassing entry checks. • The number and size of arguments in a gate crossing can also be controlled (this may protect against s ...
... applied when calling another process is protected entry points. • A process calling another process can only enter this process at pre-designed entry points. This prevents bypassing entry checks. • The number and size of arguments in a gate crossing can also be controlled (this may protect against s ...
Chapter 1: Introduction
... minicomputer must keep all users happy Users of dedicate systems such as workstations have dedicated resources but frequently use shared resources from servers Handheld computers are resource poor, optimized for usability and battery life Some computers have little or no user interface, such as embe ...
... minicomputer must keep all users happy Users of dedicate systems such as workstations have dedicated resources but frequently use shared resources from servers Handheld computers are resource poor, optimized for usability and battery life Some computers have little or no user interface, such as embe ...
Chapter 12
... • The fundamentals of patch management • The tradeoffs to be considered when attempting to improve overall system performance • The roles of system measurement tools such as positive and negative feedback loops • Two system monitoring techniques • The importance of sound accounting practices by syst ...
... • The fundamentals of patch management • The tradeoffs to be considered when attempting to improve overall system performance • The roles of system measurement tools such as positive and negative feedback loops • Two system monitoring techniques • The importance of sound accounting practices by syst ...
What is an Operating System?
... Wait instruction idles the CPU until the next interrupt Wait loop (contention for memory access) At most one I/O request is outstanding at a time, no simultaneous I/O processing After I/O starts, control returns to user program without waiting for I/O completion System call – request to th ...
... Wait instruction idles the CPU until the next interrupt Wait loop (contention for memory access) At most one I/O request is outstanding at a time, no simultaneous I/O processing After I/O starts, control returns to user program without waiting for I/O completion System call – request to th ...
Evergrid Financing - University of Oklahoma
... User-Friendly Checkpointing and Stateful Preemption in HPC Environments Using Evergrid Availability Services ...
... User-Friendly Checkpointing and Stateful Preemption in HPC Environments Using Evergrid Availability Services ...
Microreboot
... Crash Only Design • Programs that can be safely crashed in whole or by parts and recover quickly every time ...
... Crash Only Design • Programs that can be safely crashed in whole or by parts and recover quickly every time ...
Distributed operating system
A distributed operating system is a software over a collection of independent, networked, communicating, and physically separate computational nodes. Each individual node holds a specific software subset of the global aggregate operating system. Each subset is a composite of two distinct service provisioners. The first is a ubiquitous minimal kernel, or microkernel, that directly controls that node’s hardware. Second is a higher-level collection of system management components that coordinate the node's individual and collaborative activities. These components abstract microkernel functions and support user applications.The microkernel and the management components collection work together. They support the system’s goal of integrating multiple resources and processing functionality into an efficient and stable system. This seamless integration of individual nodes into a global system is referred to as transparency, or single system image; describing the illusion provided to users of the global system’s appearance as a single computational entity.