The Amoeba Distributed Operating System
... 2. Pool of processors which are dynamically allocated to users as required. 3. Specialized servers: file, directory, database, etc. 4. These components were connected to each other by a fast LAN, and to the wide area network by a gateway. ...
... 2. Pool of processors which are dynamically allocated to users as required. 3. Specialized servers: file, directory, database, etc. 4. These components were connected to each other by a fast LAN, and to the wide area network by a gateway. ...
Device Drivers - EMU CMPE Home Page
... registers). TSS also has Input-Output Map showing for each of possible 64K input-output ports possibility of access to it. Windows NT/2000 is characterized by: - model of modified micro-kernel - emulation of several OS - independence from processor architecture - object model - multithreading - pree ...
... registers). TSS also has Input-Output Map showing for each of possible 64K input-output ports possibility of access to it. Windows NT/2000 is characterized by: - model of modified micro-kernel - emulation of several OS - independence from processor architecture - object model - multithreading - pree ...
UNIX Operating System
... first starting with the target it is going to create. Make looks at each of the target’s dependencies to see if they are listed as targets. It follows the chain of dependencies until it reaches the end of the chain and then begins backing out and executing the commands found in each target's rule. A ...
... first starting with the target it is going to create. Make looks at each of the target’s dependencies to see if they are listed as targets. It follows the chain of dependencies until it reaches the end of the chain and then begins backing out and executing the commands found in each target's rule. A ...
ppt
... creates a new address space (called the child) copies the parent’s address space into the child’s starts a new thread of control in the child’s address space parent and child are equivalent -- almost • in parent, fork() returns a non-zero integer • in child, fork() returns a zero. • difference allow ...
... creates a new address space (called the child) copies the parent’s address space into the child’s starts a new thread of control in the child’s address space parent and child are equivalent -- almost • in parent, fork() returns a non-zero integer • in child, fork() returns a zero. • difference allow ...
Lecture_01
... started the GNU Project (GNU = Gnu is not Unix), a software movement to provide free and quality software. 1984 – Stallman started to write the GNU C compiler (gcc), considered as one of the most efficient and robust compilers ever created. Open source programs are released under the GNU General ...
... started the GNU Project (GNU = Gnu is not Unix), a software movement to provide free and quality software. 1984 – Stallman started to write the GNU C compiler (gcc), considered as one of the most efficient and robust compilers ever created. Open source programs are released under the GNU General ...
ppt
... • A process is an abstraction that supports running programs • Different processes may run several instances of the same program • In most systems, processes form a tree, with the root being the first process to be created • At a minimum, the following resources are required: – Memory to contain the ...
... • A process is an abstraction that supports running programs • Different processes may run several instances of the same program • In most systems, processes form a tree, with the root being the first process to be created • At a minimum, the following resources are required: – Memory to contain the ...
Chapter 3 PowerPoint
... operating system (called the kernel) is loaded into memory. Running Programs/Applications The most important function for an operating system is to run our applications/software/programs. • Multitasking – the ability to run multiple programs simultaneously. The CPU switches between all the programs ...
... operating system (called the kernel) is loaded into memory. Running Programs/Applications The most important function for an operating system is to run our applications/software/programs. • Multitasking – the ability to run multiple programs simultaneously. The CPU switches between all the programs ...
ing systems were being developed in the
... driver and server has a bitmap in the process table that restricts which of the kernel calls it may use. This protection is quite fine-grained, so, for example, a device driver may have permission to perform I/O or make copies to and from user processes, but not to shut down the system, create new p ...
... driver and server has a bitmap in the process table that restricts which of the kernel calls it may use. This protection is quite fine-grained, so, for example, a device driver may have permission to perform I/O or make copies to and from user processes, but not to shut down the system, create new p ...
Operating Systems
... 8. Differentiate between Complier and Interpreter? Compile compiles as a whole and interpreter compiles line by line. 10. What are the different functions of Syntax phase, Scheduler? Scheduler deals with the problem of deciding which of the process in the ready queue is to be allocated the CPU. Shor ...
... 8. Differentiate between Complier and Interpreter? Compile compiles as a whole and interpreter compiles line by line. 10. What are the different functions of Syntax phase, Scheduler? Scheduler deals with the problem of deciding which of the process in the ready queue is to be allocated the CPU. Shor ...
Homework 1
... has only 2 jobs: A and B. Provide a scenario where running the jobs sequentially will provide better performance (measured by having a smaller makespan) compared to running them in parallel. If such a scenario does not exist, explain why. Otherwise, explain the particulars of jobs A and B and how it ...
... has only 2 jobs: A and B. Provide a scenario where running the jobs sequentially will provide better performance (measured by having a smaller makespan) compared to running them in parallel. If such a scenario does not exist, explain why. Otherwise, explain the particulars of jobs A and B and how it ...
ppt
... OS saves the CPU state of the running process in that process’s PCB – when the OS returns the process to the running state, it loads the hardware registers with values from that process’s PCB – general purpose registers, stack pointer, instruction pointer ...
... OS saves the CPU state of the running process in that process’s PCB – when the OS returns the process to the running state, it loads the hardware registers with values from that process’s PCB – general purpose registers, stack pointer, instruction pointer ...
Kernel
... – memory resident part of UNIX – majority written in C rest in assembler language (HW dependent, speed) – a.out (a plain C a.out program) – consists of functions • other programs can call (some of) these functions • called “system call function” ...
... – memory resident part of UNIX – majority written in C rest in assembler language (HW dependent, speed) – a.out (a plain C a.out program) – consists of functions • other programs can call (some of) these functions • called “system call function” ...
Assignment0: Linux Basics and /proc
... collective kernel variables define the kernel's perspective of the state of the entire computer system. Each externally invoked function-a system call or an IRQ-provides a prescribed service and causes the system state to be changed by having the kernel code change its kernel variables. If you could ...
... collective kernel variables define the kernel's perspective of the state of the entire computer system. Each externally invoked function-a system call or an IRQ-provides a prescribed service and causes the system state to be changed by having the kernel code change its kernel variables. If you could ...
3.basic hardware elements
... Dual mode of operations user mode Used for normal execution of user programs Hardware control does not allow the execution of ...
... Dual mode of operations user mode Used for normal execution of user programs Hardware control does not allow the execution of ...
System Software
... the current status, i.e., the contents of the CPU registers, of the suspended process (in a structure called a process control block) in the memory so that the suspended process can resume execution seamlessly when it is allocated with more CPU time at a later stage. The storing of the status of a ...
... the current status, i.e., the contents of the CPU registers, of the suspended process (in a structure called a process control block) in the memory so that the suspended process can resume execution seamlessly when it is allocated with more CPU time at a later stage. The storing of the status of a ...
ppt - Computer Science
... Separate mechanism from policy. Only lower level mechanisms are supported in kernel mode. (Address space management, scheduling and basic IPC) Policies are implemented in user level which are easier to change. Kernel must protect servers from each other. Good protection but has to use IPC to communi ...
... Separate mechanism from policy. Only lower level mechanisms are supported in kernel mode. (Address space management, scheduling and basic IPC) Policies are implemented in user level which are easier to change. Kernel must protect servers from each other. Good protection but has to use IPC to communi ...
Personal Research of the First Come First Serve Operation in the
... executes queued request and processes by the order of their arrival .With first come first served ,hat come first is handled first ;the next request line will be executed once the one before it is complete . ...
... executes queued request and processes by the order of their arrival .With first come first served ,hat come first is handled first ;the next request line will be executed once the one before it is complete . ...
Chapter 2 Operating System Overview Operating System Overview
... – An instance of a running program – The entity that can be assigned to and executed on a processor – A single sequential thread of execution, a current state, and an associated set of system resources. ...
... – An instance of a running program – The entity that can be assigned to and executed on a processor – A single sequential thread of execution, a current state, and an associated set of system resources. ...
Operating System Overview
... – An instance of a running program – The entity that can be assigned to and executed on a processor – A single sequential thread of execution, a current state, and an associated set of system resources. ...
... – An instance of a running program – The entity that can be assigned to and executed on a processor – A single sequential thread of execution, a current state, and an associated set of system resources. ...
Chapter 2Operating System Overview
... – An instance of a running program – The entity that can be assigned to and executed on a processor – A single sequential thread of execution, a current state, and an associated set of system resources. ...
... – An instance of a running program – The entity that can be assigned to and executed on a processor – A single sequential thread of execution, a current state, and an associated set of system resources. ...