Pilot: An Operating System for a Personal Computer
... “lost object problem” [25] in which inaccessible files take up space but cannot be deleted. Temporary files are also useful as scratch storage which will be reclaimed automatically in case of system failure. A Pilot file may be made immutable. This means that it is permanently read-only and may neve ...
... “lost object problem” [25] in which inaccessible files take up space but cannot be deleted. Temporary files are also useful as scratch storage which will be reclaimed automatically in case of system failure. A Pilot file may be made immutable. This means that it is permanently read-only and may neve ...
The init process cont. - Workshops
... You can run without swap, and your PC may run faster, but this is dangerous if you run out of memory. There are several opinions about what is the optimal swap size. This can depend on what type of services you run (databases need more swap). The general rule of thumb is that swap size should be som ...
... You can run without swap, and your PC may run faster, but this is dangerous if you run out of memory. There are several opinions about what is the optimal swap size. This can depend on what type of services you run (databases need more swap). The general rule of thumb is that swap size should be som ...
No Slide Title
... Linux 2.0 was the first Linux kernel to support SMP hardware; separate processes or threads can execute in parallel on separate processors. ...
... Linux 2.0 was the first Linux kernel to support SMP hardware; separate processes or threads can execute in parallel on separate processors. ...
The Linux System 21.2 Silberschatz, Galvin and Gagne ©2009
... Linux 2.0 was the first Linux kernel to support SMP hardware; separate processes or threads can execute in parallel on separate processors. ...
... Linux 2.0 was the first Linux kernel to support SMP hardware; separate processes or threads can execute in parallel on separate processors. ...
Chapter08
... stand-alone operating systems Describe the functions of an operating system Identify various network operating systems Discuss ways that some operating systems help administrators control a network and administer security ...
... stand-alone operating systems Describe the functions of an operating system Identify various network operating systems Discuss ways that some operating systems help administrators control a network and administer security ...
Operating System
... stand-alone operating systems Describe the functions of an operating system Identify various network operating systems Discuss ways that some operating systems help administrators control a network and administer security ...
... stand-alone operating systems Describe the functions of an operating system Identify various network operating systems Discuss ways that some operating systems help administrators control a network and administer security ...
CS 519: Operating System Theory
... How to share system resources between multiple processes? Typically broken into a number of orthogonal policies for individual resources such as CPU, memory, and disk. ...
... How to share system resources between multiple processes? Typically broken into a number of orthogonal policies for individual resources such as CPU, memory, and disk. ...
CS 519: Operating System Theory
... How to share system resources between multiple processes? Typically broken into a number of orthogonal policies for individual resources such as CPU, memory, and disk. ...
... How to share system resources between multiple processes? Typically broken into a number of orthogonal policies for individual resources such as CPU, memory, and disk. ...
The Linux System
... device-drive support, and supported only the Minix file system Linux 1.0 (March 1994) included these new features: ...
... device-drive support, and supported only the Minix file system Linux 1.0 (March 1994) included these new features: ...
Operating system
... EEPROM is a special type of PROM that can be erased by exposing it to an electrical charge. EEPROM retains its contents even when the power is turned off. firmware: Firmware is software that is embedded in a piece of hardware. You can think of firmware simply as "software for hardware.“ Typical exam ...
... EEPROM is a special type of PROM that can be erased by exposing it to an electrical charge. EEPROM retains its contents even when the power is turned off. firmware: Firmware is software that is embedded in a piece of hardware. You can think of firmware simply as "software for hardware.“ Typical exam ...
Last Class: Processes Example Unix Program: Fork
... simultaneously (utilization, throughput,..), but this is not generally possible Instead, choose a scheduling algorithm based on its ability to satisfy a policy • Minimize average response time - provide output to the user as quickly as possible and process their input as soon as it is received. • ...
... simultaneously (utilization, throughput,..), but this is not generally possible Instead, choose a scheduling algorithm based on its ability to satisfy a policy • Minimize average response time - provide output to the user as quickly as possible and process their input as soon as it is received. • ...
Workshop 5 Slide
... The read position operation returns the logical block number where the tape head is. The space operation enables relative motion. Tape drives are “append-only” devices; updating a block in the middle of the tape also effectively erases everything beyond that ...
... The read position operation returns the logical block number where the tape head is. The space operation enables relative motion. Tape drives are “append-only” devices; updating a block in the middle of the tape also effectively erases everything beyond that ...
Operating System
... Division by zero, invalid memory access, request for operating system service Other process problems include infinite loop, processes modifying each other or the operating system. An error should cause problems only for the one program that was running. Dual-mode operation allows OS to protect i ...
... Division by zero, invalid memory access, request for operating system service Other process problems include infinite loop, processes modifying each other or the operating system. An error should cause problems only for the one program that was running. Dual-mode operation allows OS to protect i ...
Module 3: Operating
... location of the data. The processes are responsible for making sure that they are not writing to the same memory area simultaneously. ...
... location of the data. The processes are responsible for making sure that they are not writing to the same memory area simultaneously. ...
CS 519: Operating System Theory
... cell 1 then place the result in cell 2 Decrement cell 1 by 1 Start executing from the address of LOOP Operating System Theory ...
... cell 1 then place the result in cell 2 Decrement cell 1 by 1 Start executing from the address of LOOP Operating System Theory ...
Amoeba Vs. Mach OS
... Mach use processor set concept to control of which threads assigned to which processor. This mechanism allows true parallelism among the threads of a single process. ...
... Mach use processor set concept to control of which threads assigned to which processor. This mechanism allows true parallelism among the threads of a single process. ...
Implementing Processes, Threads, and Resources
... • Allocation and use of the primary memory resource – memory allocation among competing processes – enforce memory isolation and sharing ...
... • Allocation and use of the primary memory resource – memory allocation among competing processes – enforce memory isolation and sharing ...
Slide set 14
... In this example, the ready list contains n queues, one for each priority level. Each queue contains a list of pointers to PCBs at that priority level. The scheduler services the ready list in FIFO order, starting with the highest priority queue. ...
... In this example, the ready list contains n queues, one for each priority level. Each queue contains a list of pointers to PCBs at that priority level. The scheduler services the ready list in FIFO order, starting with the highest priority queue. ...
What is an Operating System?
... assistance, even if you collaborate with others to solve the problem. You are asked on your assignment hand-in to identify your collaborators. If you did not work with anyone, you should write "Collaborators: none". If you obtain a solution through research (e.g., on the world wide web), acknowledge ...
... assistance, even if you collaborate with others to solve the problem. You are asked on your assignment hand-in to identify your collaborators. If you did not work with anyone, you should write "Collaborators: none". If you obtain a solution through research (e.g., on the world wide web), acknowledge ...
Chapter 1: Introduction
... jobs so frequently that users can interact with each job while it is running, creating interactive computing ...
... jobs so frequently that users can interact with each job while it is running, creating interactive computing ...
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[slides] Introduction to operating systems
... jobs so frequently that users can interact with each job while it is running, creating interactive computing ...
... jobs so frequently that users can interact with each job while it is running, creating interactive computing ...
tasks, threads and processes, confused?
... address) onto a physical address in memory. Each process sees a linear virtual address memory map based on processor size (e.g. for a 32-‐bit processor, a process can address 232 addresses – 4GB add ...
... address) onto a physical address in memory. Each process sees a linear virtual address memory map based on processor size (e.g. for a 32-‐bit processor, a process can address 232 addresses – 4GB add ...
