'Kernel thread' presentation slideshows

UNIT II Process Management, Thread Scheduling Chapter 3: Process Concept Process Concepts

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Chapter 5: Process Scheduling

Chapter 5: Process Scheduling. Chapter 5: Process Scheduling. Basic Concepts Scheduling Criteria Scheduling Algorithms Thread Scheduling Multiple-Processor Scheduling Real-Time CPU Scheduling Operating Systems Examples Algorithm Evaluation. Objectives.

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Cosc 4740

Cosc 4740. Chapter 4 & 5 Threads & Scheduling. Motivation. Threads run within application (process) Multiple tasks with the application can be implemented by separate threads Update display Fetch data Spell checking Answer a network request

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Operating Systems

Operating Systems. Threads Implementation. Multithreading vs. Single threading. Single threading: when the OS does not recognize the concept of thread. Multithreading: when the OS supports multiple threads of execution within a single process.

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CS414 Minithreads project overview

CS414 Minithreads project overview. Alin Dobra dobra@cs.cornell.edu. What you have to do. Implement Minithreads, a user-level threads package on Windows NT Includes semaphores and queues Non-preemptive The hardest parts (context switching, stack initialisation) are done for you

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Scheduler Activations: Effective Kernel Support for the User-Level Management of Parallelism

Scheduler Activations: Effective Kernel Support for the User-Level Management of Parallelism by Thomas E. Anderson, Brian N. Bershad, Edward D. Lazowska, and Henry M. Levy ACM Transactions on Computer Systems, 10(1):53--79, February 1992. Presented by Daniel Cristofani.

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Chapter 5: Threads

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Module 5: Threads

Module 5: Threads. Benefits User and Kernel Threads Multithreading Models Solaris 2 Threads Java Threads. Benefits. Responsiveness Resource Sharing Economy Utilization of MP Architectures. Single and Multithreaded Processes. User Threads.

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Scheduler Activations: Effective Kernel Support for the User-Level Management of Parallelism

Scheduler Activations: Effective Kernel Support for the User-Level Management of Parallelism. THOMAS E. ANDERSON, BRIAN N. BERSHAD, EDWARD D.LAZOWSKA, and HENRY M. LEVY University of Washington. Speaker : ??? ( redcdang@gmail.com ) ??? (park8312@nate.com) . Threads?.

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CSE 451 : Operating Systems

CSE 451 : Operating Systems. Section 5 Midterm review. Kernel/ userspace separation. Userspace processes cannot interact directly with hardware (non-privileged mode) Attempting to execute a system call instruction causes a trap to the kernel (privileged mode), which handles the request

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Chapter 5: Threads

Chapter 5: Threads. Overview Multithreading Models Threading Issues Pthreads Solaris 2 Threads Windows 2000 Threads Linux Threads Java Threads. Process VS Thread. Process has Process environment – address space with code and data, open file handles, accounting info, other resources

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Chapter 5: Threads

Chapter 5: Threads. Overview Multithreading Models Threading Issues Pthreads Solaris 2 Threads Windows 2000 Threads Linux Threads Java Threads. Single and Multithreaded Processes. Benefits. Responsiveness Resource Sharing Economy Utilization of MP Architectures. User Threads.

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Chapter 5: Threads

Chapter 5: Threads. Overview Multithreading Models Threading Issues Pthreads Solaris 2 Threads Windows 2000 Threads Linux Threads Java Threads. Single and Multithreaded Processes. Benefits. Responsiveness Resource Sharing Economy Utilization of MP Architectures. User Threads.

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Scheduling

Scheduling. Basic scheduling policies, for OS schedulers (threads, tasks, processes) or thread library schedulers Review of Context Switching overheads Material: Silberschatz 7ed. Ch. 4.4.1, 4.4.4-4.4.6 Silberschatz 7ed. Ch. 5.1-5.6 Lewis & Berg Ch. 5.

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Operating Systems Chapter 5

Operating Systems Chapter 5. Threads. Benefits. Responsiveness Resource Sharing Economy Utilization of MP Architectures. Benefits of Threads / Performance implications. Less time to create a thread than a process Less time to terminate thread than a process

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Lightweight Remote Procedure Call ( Bershad , et. al.)

Lightweight Remote Procedure Call ( Bershad , et. al.). Andy Jost CS 533, Winter 2012. Introduction. Preliminary definitions Monolithic kernels and microkernels Capability systems Remote procedure calls (RPC) Motivation Analysis of the common case Performance of RPC Sources of overhead

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Rapid Development of High Performance Servers

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Multithreading vs. Event Driven in Code Development of High Performance Servers

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Critical Section Tools

Critical Section Tools. (HW interface) locks implemented in ISA T&S, CAS (O.S. )Semaphores Counting and Binary ( a.k.a a mutex lock) (Augmented O.S.) Monitors & conditions Java, C#, or make your own! Need only atomic lock ops at the ISA level, implement the rest yourself.

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