The IPv6 QoS system implementation in virtual infrastructure
... planes. The most popular open platform, which also exploits such a concept is Openflow [16]. For this purpose Openflow defines a set of interfaces. However, based on our best knowledge these interfaces are dedicated for the control plane only and they does not support any QoS mechanisms. Therefore, ...
... planes. The most popular open platform, which also exploits such a concept is Openflow [16]. For this purpose Openflow defines a set of interfaces. However, based on our best knowledge these interfaces are dedicated for the control plane only and they does not support any QoS mechanisms. Therefore, ...
rtos-concepts
... 1) If there is only one highly critical task, pick it up and execute it. 2) If there are more than one highly critical task, select the one with the highest dynamic priority. Here, the task with the least laxity is considered to be the one with the highest priority. 3) If there is more than one task ...
... 1) If there is only one highly critical task, pick it up and execute it. 2) If there are more than one highly critical task, select the one with the highest dynamic priority. Here, the task with the least laxity is considered to be the one with the highest priority. 3) If there is more than one task ...
Concurrency: Mutual Exclusion and Synchronization
... Only one process can use codes at a time. P1 invokes echo, and is interrupted immediately after reading x char x is stored in chin P2 is activated and invokes echo, but P1 is still inside (using) echo (though is currently ...
... Only one process can use codes at a time. P1 invokes echo, and is interrupted immediately after reading x char x is stored in chin P2 is activated and invokes echo, but P1 is still inside (using) echo (though is currently ...
CHAPTER 1 Concepts and Tools n this chapter, we`ll introduce the
... using throughout this book, such as the Windows API, processes, threads, virtual memory, kernel mode and user mode, objects, handles, security, and the registry. We’ll also introduce the tools that you can use to explore Windows internals, such as the kernel debugger, the Performance Monitor, and ke ...
... using throughout this book, such as the Windows API, processes, threads, virtual memory, kernel mode and user mode, objects, handles, security, and the registry. We’ll also introduce the tools that you can use to explore Windows internals, such as the kernel debugger, the Performance Monitor, and ke ...
January 1982 LIDS-P-1175 DISTRIBUTED MINIMUM HOP ALGORITHMS* by
... nodes exist (which is now known from the numbers on the acknowledgement), node d starts iteration i+l, and otherwise the algorithm terminates. A detailed description of the algorithm is given in pidgin algol in the appendix. ...
... nodes exist (which is now known from the numbers on the acknowledgement), node d starts iteration i+l, and otherwise the algorithm terminates. A detailed description of the algorithm is given in pidgin algol in the appendix. ...
System and Process Virtualization
... context of other Virtualization Technologies To understand how System, Process and other Virtualization Technologies are likely to develop ...
... context of other Virtualization Technologies To understand how System, Process and other Virtualization Technologies are likely to develop ...
On the Use of Feedback in an Introduction-Based Reputation Protocol ∗
... 2 O. Patrick Kreidl is an Assistant Professor of Electrical Engineering, University of North Florida, 1 UNF Drive, Jacksonville, FL 32224, USA ...
... 2 O. Patrick Kreidl is an Assistant Professor of Electrical Engineering, University of North Florida, 1 UNF Drive, Jacksonville, FL 32224, USA ...
A Network Swapping Module for Linux Clusters
... module that is easily added as a swap device to cluster nodes and runs entirely in kernel space on an unmodified 1 Linux kernel; applications can take advantage of network swapping without having to re-compile or link with special libraries. Nswap is designed to scale to large clusters using an app ...
... module that is easily added as a swap device to cluster nodes and runs entirely in kernel space on an unmodified 1 Linux kernel; applications can take advantage of network swapping without having to re-compile or link with special libraries. Nswap is designed to scale to large clusters using an app ...
Isolating Faulty Device Drivers
... Since CPU-bound processes are penalized more often, interactive applications have good response times. Periodically, all priorities are increased if not at their initial value. Two additional protection mechanisms exist. First, the driver manager can be configured to periodically check the driver’s ...
... Since CPU-bound processes are penalized more often, interactive applications have good response times. Periodically, all priorities are increased if not at their initial value. Two additional protection mechanisms exist. First, the driver manager can be configured to periodically check the driver’s ...
Cellular Disco: resource management using
... unmapped accesses to any location, and allows execution of privileged instructions). Without virtualization, the operating system runs at kernel level and applications execute in user mode; supervisor mode is not used. Under Cellular Disco, only the virtual machine monitor is allowed to run at kerne ...
... unmapped accesses to any location, and allows execution of privileged instructions). Without virtualization, the operating system runs at kernel level and applications execute in user mode; supervisor mode is not used. Under Cellular Disco, only the virtual machine monitor is allowed to run at kerne ...
MobileMAN meeting
... • During this period we have implemented the node classification (i.e. smart, dummy nodes) for creating Ad Hoc backbone to support other constrained devices and extend the network lifetime. • Classification criteria is based on – Link stability, Mobility, Battery power and User preferences • This no ...
... • During this period we have implemented the node classification (i.e. smart, dummy nodes) for creating Ad Hoc backbone to support other constrained devices and extend the network lifetime. • Classification criteria is based on – Link stability, Mobility, Battery power and User preferences • This no ...
* Abstract
... unmapped accesses to any location, and allows execution of privileged instructions). Without virtualization, the operating system runs at kernel level and applications execute in user mode; supervisor mode is not used. Under Cellular Disco, only the virtual machine monitor is allowed to run at kerne ...
... unmapped accesses to any location, and allows execution of privileged instructions). Without virtualization, the operating system runs at kernel level and applications execute in user mode; supervisor mode is not used. Under Cellular Disco, only the virtual machine monitor is allowed to run at kerne ...
Computer Architecture and Organization
... Protection refers to a mechanism for controlling access by programs, processes, or users to both system and user resources The protection mechanism must: ...
... Protection refers to a mechanism for controlling access by programs, processes, or users to both system and user resources The protection mechanism must: ...
Process Management - Computer Science
... When a thread is switched out, what happens to it? How do we find it to switch it back in? This is what the TCB is for. System typically has A run queue that points to the TCBs of threads ready to run A blocked queue per device to hold the TCBs of threads blocked waiting for an I/O operation on that ...
... When a thread is switched out, what happens to it? How do we find it to switch it back in? This is what the TCB is for. System typically has A run queue that points to the TCBs of threads ready to run A blocked queue per device to hold the TCBs of threads blocked waiting for an I/O operation on that ...
Document
... Third, sensor nodes are tightly constrained in terms of energy, processing, and storage capacities. Thus, they require carefully resource management. Fourth, in most application scenarios, nodes in WSNs are generally stationary after deployment except for, may be, a few mobile nodes. Fifth, sensor n ...
... Third, sensor nodes are tightly constrained in terms of energy, processing, and storage capacities. Thus, they require carefully resource management. Fourth, in most application scenarios, nodes in WSNs are generally stationary after deployment except for, may be, a few mobile nodes. Fifth, sensor n ...
Why Threads? - WordPress.com
... • Thread management is handled by the thread library in user space, which is very efficient. • However, if a blocking system call is made, then the entire process blocks, even if the other user threads would otherwise be able to continue. • Because a single kernel thread can operate only on a single ...
... • Thread management is handled by the thread library in user space, which is very efficient. • However, if a blocking system call is made, then the entire process blocks, even if the other user threads would otherwise be able to continue. • Because a single kernel thread can operate only on a single ...
OPERATING- SYSTEM CONCEPTS with Java
... d. Real time. Often used in a dedicated application, this system reads information from sensors and must respond within a fixed amount of time to ensure correct performance. e. Network. Provides operating system features across a network such as file sharing. f. SMP. Used in systems where there are ...
... d. Real time. Often used in a dedicated application, this system reads information from sensors and must respond within a fixed amount of time to ensure correct performance. e. Network. Provides operating system features across a network such as file sharing. f. SMP. Used in systems where there are ...
Mellanox Update - HPC User Forum
... CORE-Direct (Collectives Offload Resource Engine) • Collectives communication are communications used for system synchronizations, data broadcast or data gathering • Collectives effect every node • CORE-Direct offloads these collectives to the HCA from the CPU • Eliminates system noise and jitter is ...
... CORE-Direct (Collectives Offload Resource Engine) • Collectives communication are communications used for system synchronizations, data broadcast or data gathering • Collectives effect every node • CORE-Direct offloads these collectives to the HCA from the CPU • Eliminates system noise and jitter is ...
Course: Operating Systems Instructor: M Umair
... resources. For example, a printer cannot be simultaneously shared by several processes. Sharable resources, in contrast, do not require mutually exclusive access and thus cannot be involved in a deadlock. Read-only files are a good example of a sharable resource. ...
... resources. For example, a printer cannot be simultaneously shared by several processes. Sharable resources, in contrast, do not require mutually exclusive access and thus cannot be involved in a deadlock. Read-only files are a good example of a sharable resource. ...
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.