(a) and (b) d) none of the mentioned Answer:c advertisements
... Explanation:Those systems which allows more than one process execution at a time, are called multiprogramming systems. Uniprocessing means only one processor. 2. In operating system, each process has its own a) address space and global variables b) open files c) pending alarms, signals and signal h ...
... Explanation:Those systems which allows more than one process execution at a time, are called multiprogramming systems. Uniprocessing means only one processor. 2. In operating system, each process has its own a) address space and global variables b) open files c) pending alarms, signals and signal h ...
Time-outs using Linux
... If pid equals -1, then sig is sent to every process except for the first one. If pid is less than -1, then sig is sent to every in the process group -pid. ...
... If pid equals -1, then sig is sent to every process except for the first one. If pid is less than -1, then sig is sent to every in the process group -pid. ...
Chapter 3 Process Description and Control
... I/O Tables • Used by the OS to manage the I/O devices and channels of the computer. • The OS needs to know – Whether the I/O device is available or assigned – The status of I/O operation – The location in main memory being used as the source or destination of the I/O transfer ...
... I/O Tables • Used by the OS to manage the I/O devices and channels of the computer. • The OS needs to know – Whether the I/O device is available or assigned – The status of I/O operation – The location in main memory being used as the source or destination of the I/O transfer ...
Slides - Department of Computer Science
... Each process is assigned a time interval to run, called the quantum or time slice. At the end of a process’s time quantum, the scheduler suspends the process and schedules another process to run. ...
... Each process is assigned a time interval to run, called the quantum or time slice. At the end of a process’s time quantum, the scheduler suspends the process and schedules another process to run. ...
ossupport-ashish
... • Higher level interface slightly different • Guest OS needs to be modified – Simple device drivers added – Emulation of certain instructions (iret and in/out) – Kernel Re-linked to different address ...
... • Higher level interface slightly different • Guest OS needs to be modified – Simple device drivers added – Emulation of certain instructions (iret and in/out) – Kernel Re-linked to different address ...
ch22
... The VM manager in XP uses a page-based management scheme with a page size of 4 KB. The XP VM manager uses a two step process to allocate memory. The first step reserves a portion of the process’s address space. The second step commits the allocation by assigning space in the ...
... The VM manager in XP uses a page-based management scheme with a page size of 4 KB. The XP VM manager uses a two step process to allocate memory. The first step reserves a portion of the process’s address space. The second step commits the allocation by assigning space in the ...
Document
... layers. The bottom layer (layer 0), is the hardware; the highest (layer N) is the user interface. With modularity, layers are ...
... layers. The bottom layer (layer 0), is the hardware; the highest (layer N) is the user interface. With modularity, layers are ...
CPU Scheduling Algorithms
... • e.g. does it require the full quantum for computation, or • does it perform frequent I/O ? ...
... • e.g. does it require the full quantum for computation, or • does it perform frequent I/O ? ...
No Slide Title
... The variable class contains threads having priorities from 0 to 15. Characteristics of 2000’s priority strategy. Trends to give very good response times to interactive threads that are using the mouse and windows. Enables I/O-bound threads to keep the I/O devices busy. Complete-bound threa ...
... The variable class contains threads having priorities from 0 to 15. Characteristics of 2000’s priority strategy. Trends to give very good response times to interactive threads that are using the mouse and windows. Enables I/O-bound threads to keep the I/O devices busy. Complete-bound threa ...
Introduction
... these features are difficult to compete against. Some open source operating systems do not offer paid support programs. Some companies avoid open source projects because they need paid support, so that they have some entity to hold accountable if there is a problem or they need help fixing an issue. ...
... these features are difficult to compete against. Some open source operating systems do not offer paid support programs. Some companies avoid open source projects because they need paid support, so that they have some entity to hold accountable if there is a problem or they need help fixing an issue. ...
process
... I/O Tables • Used by the OS to manage the I/O devices and channels of the computer. • The OS needs to know – Whether the I/O device is available or assigned – The status of I/O operation – The location in main memory being used as the source or destination of the I/O transfer ...
... I/O Tables • Used by the OS to manage the I/O devices and channels of the computer. • The OS needs to know – Whether the I/O device is available or assigned – The status of I/O operation – The location in main memory being used as the source or destination of the I/O transfer ...
Operating Systems Should Provide Transactions
... In the TxOS design, specific file system implementations are responsible only for not writing intermediate transaction results to disk and atomically writing a group of updates at commit. This atomic write could be implemented with journaling, copy-on-write semantics, or a transactional file system ...
... In the TxOS design, specific file system implementations are responsible only for not writing intermediate transaction results to disk and atomically writing a group of updates at commit. This atomic write could be implemented with journaling, copy-on-write semantics, or a transactional file system ...
Migration
... If the home host suffers from a bursty load, it may not make sense to migrate a process -- the home host will be free again, soon. Processes with significant virtual memory or IPC usage or many open files are poor choices for migration. Historical consideration: long running processes are better can ...
... If the home host suffers from a bursty load, it may not make sense to migrate a process -- the home host will be free again, soon. Processes with significant virtual memory or IPC usage or many open files are poor choices for migration. Historical consideration: long running processes are better can ...
Document
... Rollback – return to some safe state, restart process for that state Starvation – same process may always be picked as victim, include ...
... Rollback – return to some safe state, restart process for that state Starvation – same process may always be picked as victim, include ...
OS_Java
... In what particular situation have your program received a segmentation fault? To read data from a file, why do we need to call open and close the file? In other words, why doesn’t OS allow read( filename, data, size )? If your C++ program terminates upon an exception, it may not print out a cout sta ...
... In what particular situation have your program received a segmentation fault? To read data from a file, why do we need to call open and close the file? In other words, why doesn’t OS allow read( filename, data, size )? If your C++ program terminates upon an exception, it may not print out a cout sta ...
pps - AquaLab - Northwestern University
... – Multiple logical processors on a physical one – Each w/ own architecture state, supported by hardware – Shouldn’t require OS to know about it (but could benefit from) ...
... – Multiple logical processors on a physical one – Each w/ own architecture state, supported by hardware – Shouldn’t require OS to know about it (but could benefit from) ...
Chapter 10 PowerPoint
... interpret its contents. Examples: text, image, executable, etc. • Files have attributes, usually including the following: – Name: human-readable file name – Identifier: numeric identifier within the file system – Type: some systems formally support different file types – Location: address of the fil ...
... interpret its contents. Examples: text, image, executable, etc. • Files have attributes, usually including the following: – Name: human-readable file name – Identifier: numeric identifier within the file system – Type: some systems formally support different file types – Location: address of the fil ...
Linux+ Guide to Linux Certification
... resident application program • MS-DOS Version 2.0 began supporting dynamic allocation, modification, and release of main memory blocks by application programs • Amount of memory each application program actually owns depends on: – Type of file from which program is loaded – Size of TPA Understanding ...
... resident application program • MS-DOS Version 2.0 began supporting dynamic allocation, modification, and release of main memory blocks by application programs • Amount of memory each application program actually owns depends on: – Type of file from which program is loaded – Size of TPA Understanding ...
General-purpose Process Migration
... complex macros for a spreadsheet, he might decide to do some risky experimentation without necessarily saving the current state (not just the files but the entire environment). It is only later that the user decides whether to commit these changes or revert back to an earlier state. ...
... complex macros for a spreadsheet, he might decide to do some risky experimentation without necessarily saving the current state (not just the files but the entire environment). It is only later that the user decides whether to commit these changes or revert back to an earlier state. ...
ppt
... – Presents users (and applications) with an integrated computing platform that hides the individual computers. – Has control over all of the nodes (computers) in the network and allocates their resources to tasks without user involvement. In a distributed OS, the user doesn't know (or care) where ...
... – Presents users (and applications) with an integrated computing platform that hides the individual computers. – Has control over all of the nodes (computers) in the network and allocates their resources to tasks without user involvement. In a distributed OS, the user doesn't know (or care) where ...
Implementing Processes, Threads, and Resources
... descriptor • Extract info needed to read/write file • Authenticate that process can access the file • Create an internal file descriptor in primary memory • Create an entry in a “per process” open file ...
... descriptor • Extract info needed to read/write file • Authenticate that process can access the file • Create an internal file descriptor in primary memory • Create an entry in a “per process” open file ...
I/O Requests to Hardware Operations
... I/O system calls encapsulate device behaviors in generic classes Device-driver layer hides differences among I/O controllers from ...
... I/O system calls encapsulate device behaviors in generic classes Device-driver layer hides differences among I/O controllers from ...
CS540_Ch19
... ◦ Features found in a desktop PC require more substantial hardware that what is typically unavailable in a real-time system due to lack of memory and fast processors. Both of these are unavailable in real time systems due to space constraints. Addition to that many systems lack sufficient space ...
... ◦ Features found in a desktop PC require more substantial hardware that what is typically unavailable in a real-time system due to lack of memory and fast processors. Both of these are unavailable in real time systems due to space constraints. Addition to that many systems lack sufficient space ...