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Chapter 4: Threads
Chapter 4: Threads

... Lock the code to keep other threads out Only one thread can be in the sensitive code at a time Lock only the critical sections of code Only let one thread update the variable at a time. Use only thread safe system functions Make function reentrant Avoid the use of global and static variables Any inf ...
Eliminating Receive Livelock in an Interrupt-Driven Kernel
Eliminating Receive Livelock in an Interrupt-Driven Kernel

... hundred times per second. Polling can also increase the latency of response to an event. Modern systems can respond to an interrupt in a few tens of microseconds; to achieve the same latency using polling, the system would have to poll tens of thousands of times per second, which would create excess ...
Resource Management in a Multicore Operating System
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... bring with them complex memory and cache hierarchies and processor interconnects. While the execution of batch parallel applications has been researched in the context of high-performance computing (HPC), commodity hardware is evolving at a faster pace than specialized supercomputers and application ...
Proceedings of the FREENIX Track: 2003 USENIX Annual Technical Conference
Proceedings of the FREENIX Track: 2003 USENIX Annual Technical Conference

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Midterm study guide
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... 1. Mutual Exclusion - If process Pi is executing in its critical section, then no other processes can be executing in their critical sections 2. Progress - If no process is executing in its critical section and there exist some processes that wish to enter their critical section, then the selection ...
Proceedings of the 9th USENIX Security Symposium USENIX Association Denver, Colorado, USA
Proceedings of the 9th USENIX Security Symposium USENIX Association Denver, Colorado, USA

... 3.1 Goals and Intended Use of Fingerprint Scrubber The goal of the ngerprint scrubber is to block known stack ngerprinting techniques in a general, fast, scalable, and transparent manner. The tool should be general enough to block classes of scans, not just speci c scans by known ngerprinting too ...
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Fujitsu M10 Server Architecture
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Mac OS 8 Revealed
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... This book offers a technical tour of Mac OS 8 for computer professionals, such as programmers, product managers, engineering managers, systems integrators, information system professionals, and instructional designers. Technically oriented computer enthusiasts might also enjoy this tour. This book i ...
STUDY GUIDE FOR THE MIDTERM EXAM of Tuesday November 3
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... 1. Mutual Exclusion - If process Pi is executing in its critical section, then no other processes can be executing in their critical sections 2. Progress - If no process is executing in its critical section and there exist some processes that wish to enter their critical section, then the selection ...
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IBM z13 Hardware Innovation
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... • More memory, new cache design, improved I/O bandwidth and compression help to serve up more data for analytics • Enterprise grade Linux solution, open standards, enhanced sharing and focus on business continuity to support cloud Upgradeable from IBM zEnterprise® 196 (z196) and IBM zEnterprise EC12 ...
Sun Fire X2200 M2 Server Operating System Installation Guide
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Computer Applications in Management
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... processor speed of hundred to thousand times. In order to have a better idea of the ...
Friendly Virtual Machines Leveraging a Feedback-Control Model for Application Adaptation
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... “guest” applications on powerful end-host systems necessitates a proper way for guest applications to share the resources in the hosting environment. Specifically, two common challenges must be addressed: (1) how could the execution of such applications be isolated from one another for safety and sec ...
Chapter 6
Chapter 6

... 1. Mutual Exclusion - If process Pi is executing in its critical section, then no other processes can be executing in their critical sections 2. Progress - If no process is executing in its critical section and there exist some processes that wish to enter their critical section, then the selection ...
The APIC Approach to High Performance Network Interface Design
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... A thread execution state (Running, Ready, etc) A saved context when not running – a separate program counter An execution stack Some static storage for local variables for this thread Access to memory and resources of its process, shared with all other threads in that process (global variables) ...
Operating Systems
Operating Systems

... the time services a real-time operating system provides. From the user’s point of view, a (software) timer is an object used to keep track of time. In addition to systemwide timers, most operating systems allow threads (or processes) to have their own timers. A per thread (or per process) timer is c ...
Dancing with Giants: Wimpy Kernels for On-demand Isolated I/O
Dancing with Giants: Wimpy Kernels for On-demand Isolated I/O

... Central to on-demand isolation of I/O channels is the notion of the wimpy kernel, which constructs these channels without affecting the underlying TCB; i.e., without modifying its security properties and increasing the verification effort [39, 66]. The wimpy kernel is an add-on trustworthy service t ...
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Operating System - GH Raisoni College Of Engineering Nagpur
Operating System - GH Raisoni College Of Engineering Nagpur

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Electrical Engineering and Computer Science Department Technical
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... hybrid runtimes (HRTs), runtimes that run as kernels, and that enjoy full hardware access and control over abstractions to the machine. The primary claim of this dissertation is that the hybrid runtime model can provide significant benefits to parallel runtimes and the applications that run on top ...
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Spring (operating system)

Spring is a discontinued project/experimental microkernel-based object oriented operating system developed at Sun Microsystems in the early 1990s. Using technology substantially similar to concepts developed in the Mach kernel, Spring concentrated on providing a richer programming environment supporting multiple inheritance and other features. Spring was also more cleanly separated from the operating systems it would host, divorcing it from its Unix roots and even allowing several OSes to be run at the same time. Development faded out in the mid-1990s, but several ideas and some code from the project was later re-used in the Java programming language libraries and the Solaris operating system.
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