PPT
... network), buffer space allocated out of band by GuestOS Descriptor contains unique identifier to allow out of order processing Multiple requests can be added before hypercall made to begin processing Event notification can be masked by GuestOS for its convenience ...
... network), buffer space allocated out of band by GuestOS Descriptor contains unique identifier to allow out of order processing Multiple requests can be added before hypercall made to begin processing Event notification can be masked by GuestOS for its convenience ...
Midterm Review
... A virtual machine takes the layered approach to its logical conclusion. It treats hardware and the operating system kernel as though they were all hardware A virtual machine provides an interface identical to the underlying bare hardware The operating system creates the illusion of multiple processe ...
... A virtual machine takes the layered approach to its logical conclusion. It treats hardware and the operating system kernel as though they were all hardware A virtual machine provides an interface identical to the underlying bare hardware The operating system creates the illusion of multiple processe ...
Disco: Running Commodity Operating Systems on Scalable
... Disco uses the hardware TLB for this. Switching a different VP onto a new processor requires a TLB flush, so Disco maintains a 2nd-level TLB to offset the performance hit. There’s a technical issue with TLBs, Kernel space and the MIPS processor that threw them for a ...
... Disco uses the hardware TLB for this. Switching a different VP onto a new processor requires a TLB flush, so Disco maintains a 2nd-level TLB to offset the performance hit. There’s a technical issue with TLBs, Kernel space and the MIPS processor that threw them for a ...
Operating Systems
... Long term scheduler determines which programs are admitted to the system for processing. It controls the degree of multiprogramming. Once admitted, a job becomes a process. Medium term scheduling is part of the swapping function. This relates to processes that are in a blocked or suspended state. T ...
... Long term scheduler determines which programs are admitted to the system for processing. It controls the degree of multiprogramming. Once admitted, a job becomes a process. Medium term scheduling is part of the swapping function. This relates to processes that are in a blocked or suspended state. T ...
Paging
... Figures collected from Intel® 64 and IA-32 Architectures Software Developer’s Manual Volume 3A: ...
... Figures collected from Intel® 64 and IA-32 Architectures Software Developer’s Manual Volume 3A: ...
Week 1
... multicore processing power and intelligently manage the substantial on-chip resources efficiently • Potential for parallelism exists at three levels: ...
... multicore processing power and intelligently manage the substantial on-chip resources efficiently • Potential for parallelism exists at three levels: ...
Today: I/O Systems Architecture of I/O Systems
... • Block devices include disk drives – Commands include read, write, seek – Raw I/O or file-system access – Memory-mapped file access possible ...
... • Block devices include disk drives – Commands include read, write, seek – Raw I/O or file-system access – Memory-mapped file access possible ...
ppt
... • Within the logical schema, certain data fields are designated as record keys that provide efficient access to records in the database. ...
... • Within the logical schema, certain data fields are designated as record keys that provide efficient access to records in the database. ...
Bt878/879
... 2. On page 79 of the Bt878/Bt879 datasheet, it erroneously states the following: “In addition to the 24 I/O bits, the GPIO port includes an interrupt pin, and a write enable pin. The GPINTR signal sets the bit in the interrupt register and causes an interrupt condition to occur.” It should state the ...
... 2. On page 79 of the Bt878/Bt879 datasheet, it erroneously states the following: “In addition to the 24 I/O bits, the GPIO port includes an interrupt pin, and a write enable pin. The GPINTR signal sets the bit in the interrupt register and causes an interrupt condition to occur.” It should state the ...
Document
... The technique of keeping multiple programs that compete for access to the CPU in main memory at the same time so that they can execute Memory management The process of keeping track of what programs are in memory and where in memory they reside ...
... The technique of keeping multiple programs that compete for access to the CPU in main memory at the same time so that they can execute Memory management The process of keeping track of what programs are in memory and where in memory they reside ...
CUSTOMER_CODE SMUDE DIVISION_CODE SMUDE
... contains the smallest physical address that can be accessed. The limit register ...
... contains the smallest physical address that can be accessed. The limit register ...
Operating Systems
... • Compile time: If memory location known a priori, absolute code can be generated; must recompile code if starting location changes. • Load time: Must generate relocatable code if memory location is not known at compile time. • Execution time: Binding delayed until run time if the process can be mov ...
... • Compile time: If memory location known a priori, absolute code can be generated; must recompile code if starting location changes. • Load time: Must generate relocatable code if memory location is not known at compile time. • Execution time: Binding delayed until run time if the process can be mov ...
Korea Univ Real-Time Systems
... to make it fit • Programmers divided programs into pieces and then load and unload pieces into main memory under user’s program control ...
... to make it fit • Programmers divided programs into pieces and then load and unload pieces into main memory under user’s program control ...
Lecture 2, Part 1
... • There is a designated handler for each trap/interrupt – Its address is stored in a trap/interrupt vector table managed by the OS ...
... • There is a designated handler for each trap/interrupt – Its address is stored in a trap/interrupt vector table managed by the OS ...
Document
... The technique of keeping multiple programs that compete for access to the CPU in main memory at the same time so that they can execute Memory management The process of keeping track of what programs are in memory and where in memory they reside ...
... The technique of keeping multiple programs that compete for access to the CPU in main memory at the same time so that they can execute Memory management The process of keeping track of what programs are in memory and where in memory they reside ...
Chapter 10
... The technique of keeping multiple programs that compete for access to the CPU in main memory at the same time so that they can execute Memory management The process of keeping track of what programs are in memory and where in memory they reside ...
... The technique of keeping multiple programs that compete for access to the CPU in main memory at the same time so that they can execute Memory management The process of keeping track of what programs are in memory and where in memory they reside ...
experiment number 9 random access memory for combinational logic
... RAM, which consists of 128 unique addresses, accessed by seven address lines, which each store an 8-bit word. The chip is fabricated with n-MOS technology and is TTL compatible. Memory expansion is provided through multiple chip select inputs. Read Only Memory: ROM is a LSI or VLSI circuit that cons ...
... RAM, which consists of 128 unique addresses, accessed by seven address lines, which each store an 8-bit word. The chip is fabricated with n-MOS technology and is TTL compatible. Memory expansion is provided through multiple chip select inputs. Read Only Memory: ROM is a LSI or VLSI circuit that cons ...
The Abstraction: Address Spaces
... virtualization as efficient as possible, both in terms of time (i.e., not making programs run much more slowly) and space (i.e., not using too much memory for structures needed to support virtualization). In implementing time-efficient virtualization, the OS will have to rely on hardware support, in ...
... virtualization as efficient as possible, both in terms of time (i.e., not making programs run much more slowly) and space (i.e., not using too much memory for structures needed to support virtualization). In implementing time-efficient virtualization, the OS will have to rely on hardware support, in ...
File - ashish b. khare
... Until there is not enough RAM to store all the data needed, the process of obtaining an empty page frame does not involve removing another page from RAM. If all page frames are nonempty, obtaining an empty page frame requires choosing a page frame containing data to empty. If the data in that page f ...
... Until there is not enough RAM to store all the data needed, the process of obtaining an empty page frame does not involve removing another page from RAM. If all page frames are nonempty, obtaining an empty page frame requires choosing a page frame containing data to empty. If the data in that page f ...
Chapter 10 - Operating Systems
... can interact with the computer – allows an application program to interact with these other system resources ...
... can interact with the computer – allows an application program to interact with these other system resources ...
Week-09.2-1
... A logical address (sometimes called a virtual or relative address) is a value that specifies a generic location, relative to the program but not to the reality of main memory. A physical address is an actual address in the main memory device. Operating systems must employ techniques to: ...
... A logical address (sometimes called a virtual or relative address) is a value that specifies a generic location, relative to the program but not to the reality of main memory. A physical address is an actual address in the main memory device. Operating systems must employ techniques to: ...
Maintenance and Light Repair
... Answer the questions and identify the page number that the answer was found in the textbook ...
... Answer the questions and identify the page number that the answer was found in the textbook ...
ppt
... • Traditionally, most communication has been done through shared memory • The costs grow approximately linearly with the number of threads and how many lines are modified in the cache. • When 16 cores are modiying the same data it takes almost 12,000 extra cycles to perform the update. ...
... • Traditionally, most communication has been done through shared memory • The costs grow approximately linearly with the number of threads and how many lines are modified in the cache. • When 16 cores are modiying the same data it takes almost 12,000 extra cycles to perform the update. ...
Memory management unit
A memory management unit (MMU), sometimes called paged memory management unit (PMMU), is a computer hardware unit having all memory references passed through itself, primarily performing the translation of virtual memory addresses to physical addresses. It is usually implemented as part of the central processing unit (CPU), but it also can be in the form of a separate integrated circuit.An MMU effectively performs virtual memory management, handling at the same time memory protection, cache control, bus arbitration and, in simpler computer architectures (especially 8-bit systems), bank switching.