seminar on operating systems - Universidad Técnica Federico Santa
... distributed and real-time systems. The course is divided into two parts. The first part focuses on the study of general concepts related to the structure of an operating system: process scheduling and synchronization, memory management, and stable storage. The second part involves detailed analysis ...
... distributed and real-time systems. The course is divided into two parts. The first part focuses on the study of general concepts related to the structure of an operating system: process scheduling and synchronization, memory management, and stable storage. The second part involves detailed analysis ...
(a) and (b) d) none of the mentioned Answer:c advertisements
... 1.What is operating system? a) collection of programs that manages hardware resources b) system service provider to the application programs c) link to interface the hardware and application programs d) all of the mentioned Answer:d 2. To access the services of operating system, the interface is pro ...
... 1.What is operating system? a) collection of programs that manages hardware resources b) system service provider to the application programs c) link to interface the hardware and application programs d) all of the mentioned Answer:d 2. To access the services of operating system, the interface is pro ...
process
... – shared memory - OS provides mechanisms that allow creation of a shared memory buffer between processes • shmget() creates a shared memory segment, using a name (key ID) • shmctl() to modify control information and permissions related to a shared memory segment • shmat() to attach a shared memory s ...
... – shared memory - OS provides mechanisms that allow creation of a shared memory buffer between processes • shmget() creates a shared memory segment, using a name (key ID) • shmctl() to modify control information and permissions related to a shared memory segment • shmat() to attach a shared memory s ...
CS 471-001: Operating Systems Spring 2017 Department of
... Show an understanding of the need for the concurrent operation of multiple tasks (processes/threads) and an ability to solve basic process synchronization problems that arise from concurrent operation settings ...
... Show an understanding of the need for the concurrent operation of multiple tasks (processes/threads) and an ability to solve basic process synchronization problems that arise from concurrent operation settings ...
WORD
... ◦ Clustered systems – Linked multiprocessor systems Multiprogramming – Provides efficiency via job scheduling ◦ When OS has to wait (ex: for I/O), switches to another job Timesharing – CPU switches jobs so frequently that each user can interact with each job while it is running (interactive computin ...
... ◦ Clustered systems – Linked multiprocessor systems Multiprogramming – Provides efficiency via job scheduling ◦ When OS has to wait (ex: for I/O), switches to another job Timesharing – CPU switches jobs so frequently that each user can interact with each job while it is running (interactive computin ...
Study Guide to Accompany Operating Systems Concepts 9 Ed by
... ◦ Clustered systems – Linked multiprocessor systems Multiprogramming – Provides efficiency via job scheduling ◦ When OS has to wait (ex: for I/O), switches to another job Timesharing – CPU switches jobs so frequently that each user can interact with each job while it is running (interactive computin ...
... ◦ Clustered systems – Linked multiprocessor systems Multiprogramming – Provides efficiency via job scheduling ◦ When OS has to wait (ex: for I/O), switches to another job Timesharing – CPU switches jobs so frequently that each user can interact with each job while it is running (interactive computin ...
doc
... ◦ Clustered systems – Linked multiprocessor systems Multiprogramming – Provides efficiency via job scheduling ◦ When OS has to wait (ex: for I/O), switches to another job Timesharing – CPU switches jobs so frequently that each user can interact with each job while it is running (interactive computin ...
... ◦ Clustered systems – Linked multiprocessor systems Multiprogramming – Provides efficiency via job scheduling ◦ When OS has to wait (ex: for I/O), switches to another job Timesharing – CPU switches jobs so frequently that each user can interact with each job while it is running (interactive computin ...
2. OS Components
... code to a process for the process to detect and possibly correct. Another set of operating system functions exists not for helping the user but rather for ensuring the efficient operation of the system itself. Systems with multiple users can gain efficiency by sharing the computer resources among th ...
... code to a process for the process to detect and possibly correct. Another set of operating system functions exists not for helping the user but rather for ensuring the efficient operation of the system itself. Systems with multiple users can gain efficiency by sharing the computer resources among th ...
Introduction to Processes
... When does a process get terminated? • Batch job issues Halt instruction. • User logs off. • Process executes a service request to terminate. • Parent kills child process. • Error and fault conditions. ...
... When does a process get terminated? • Batch job issues Halt instruction. • User logs off. • Process executes a service request to terminate. • Parent kills child process. • Error and fault conditions. ...
Operating Systems Hardware Support
... • O.S. implements a set of system calls that provide a convenient mean for requesting operating system services. – Example: file system & its system calls and disk structure. • Operating system manages the hardware resources such as: – processor (CPU), – main memory (RAM), ...
... • O.S. implements a set of system calls that provide a convenient mean for requesting operating system services. – Example: file system & its system calls and disk structure. • Operating system manages the hardware resources such as: – processor (CPU), – main memory (RAM), ...
The Amoeba Distributed Operating System
... Their basic idea: users should not be aware of the number or location of processors, file servers, or other resources. The complete system should appear to be a single computer. ...
... Their basic idea: users should not be aware of the number or location of processors, file servers, or other resources. The complete system should appear to be a single computer. ...
solutions - CIS @ UPenn
... con - more internal fragmentation, worse locality of reference smaller pages: pro - reduces internal fragmentation, better with locality ofreference con - bigger page table, more page faults, overhead in reading/writing of pages 3. Describe the three possible states of a process? Answer: Running: ac ...
... con - more internal fragmentation, worse locality of reference smaller pages: pro - reduces internal fragmentation, better with locality ofreference con - bigger page table, more page faults, overhead in reading/writing of pages 3. Describe the three possible states of a process? Answer: Running: ac ...
Page table
... ◦ Reliability requirement for Windows XP more stringent than Windows 2000 (which was the most reliable, stable system released by Microsoft) ◦ “extensive manual and automatic code review to identify over 63,000 lines in the source [code] that might contain issues not detected by testing” and then se ...
... ◦ Reliability requirement for Windows XP more stringent than Windows 2000 (which was the most reliable, stable system released by Microsoft) ◦ “extensive manual and automatic code review to identify over 63,000 lines in the source [code] that might contain issues not detected by testing” and then se ...
What is an Operating System?
... Timesharing (multitasking) is logical extension in which CPU switches jobs so frequently that users can interact with each job while it is running, creating interactive computing ...
... Timesharing (multitasking) is logical extension in which CPU switches jobs so frequently that users can interact with each job while it is running, creating interactive computing ...
Chapter 1: OS overview
... Timesharing (multitasking) is logical extension in which CPU switches jobs so frequently that users can interact with each job while it is running, creating interactive computing ...
... Timesharing (multitasking) is logical extension in which CPU switches jobs so frequently that users can interact with each job while it is running, creating interactive computing ...
Slide 11 : Uniprocessor Scheduling
... Leads to an organization of the operating system into a series of layers ...
... Leads to an organization of the operating system into a series of layers ...
Powerpoint () - UCSB Computer Science
... Consider a file currently consisting of 100 blocks. Assume that the file-control block (and the index block, in the case of indexed allocation) is already in memory. Calculate the number of disk I/O operations are required for contiguous, linked, and indexed (single-level) allocation strategies, if ...
... Consider a file currently consisting of 100 blocks. Assume that the file-control block (and the index block, in the case of indexed allocation) is already in memory. Calculate the number of disk I/O operations are required for contiguous, linked, and indexed (single-level) allocation strategies, if ...
system call - efreidoc.fr
... In order to fulfil function 2, for each type of resource, the OS needs to share the use of the resource between the different programs that want to use it. To do this fairly between the different programs it must allocate resources to a program i.e. give it the right to use a resource and then sched ...
... In order to fulfil function 2, for each type of resource, the OS needs to share the use of the resource between the different programs that want to use it. To do this fairly between the different programs it must allocate resources to a program i.e. give it the right to use a resource and then sched ...
Chapter 5 Concurrency: Mutual Exclusion and Synchronization
... • If we enforce a rule that only one process may enter the function at a time then: – P1 & P2 run on separate processors – P1 enters echo first, • P2 tries to enter but is blocked ...
... • If we enforce a rule that only one process may enter the function at a time then: – P1 & P2 run on separate processors – P1 enters echo first, • P2 tries to enter but is blocked ...
- jGyan.com
... • One purpose of OS is to hide peculiarities of hardware devices from the user • I/O subsystem responsible for ▫ Memory management of I/O including buffering (storing data temporarily while it is being transferred), caching (storing parts of data in faster storage for performance), spooling (the ove ...
... • One purpose of OS is to hide peculiarities of hardware devices from the user • I/O subsystem responsible for ▫ Memory management of I/O including buffering (storing data temporarily while it is being transferred), caching (storing parts of data in faster storage for performance), spooling (the ove ...
15.a The Internal Operating System
... programs to be executed Deciding which process shall be executed next by the processor Swapping processes Deciding which process’s pending I/O request shall be handled by an available I/O device ...
... programs to be executed Deciding which process shall be executed next by the processor Swapping processes Deciding which process’s pending I/O request shall be handled by an available I/O device ...
OPERATING SYSTEM 1. What are the advantages of spooling? The
... encapsulates the resources, since only one process can be active within a monitor at a time. There is the possibility of deadlocks in the case of nested monitors calls. Monitor concept is its lack of implementation most commonly used programming languages. Monitors cannot easily be added if they are ...
... encapsulates the resources, since only one process can be active within a monitor at a time. There is the possibility of deadlocks in the case of nested monitors calls. Monitor concept is its lack of implementation most commonly used programming languages. Monitors cannot easily be added if they are ...
1. design principle
... Process is a program in execution. Their process identifier an integer identifies processes. We will see how the Unix kernel manages processes. For each new process created the kernel sets up an address space in memory. The address space consists of logical segments. Each process has two stacks a Us ...
... Process is a program in execution. Their process identifier an integer identifies processes. We will see how the Unix kernel manages processes. For each new process created the kernel sets up an address space in memory. The address space consists of logical segments. Each process has two stacks a Us ...
Contiguous Memory Allocation
... a process for execution, the dispatcher loads the relocation and limit registers with the correct values as part of the context switch. Because every address generated by a CPU is checked against these registers, we can protect both the operating system and the other users' programs and data from be ...
... a process for execution, the dispatcher loads the relocation and limit registers with the correct values as part of the context switch. Because every address generated by a CPU is checked against these registers, we can protect both the operating system and the other users' programs and data from be ...