Memory pages in working sets are trimmed more efficiently for multiprocessor systems depending on how recently they were accessed . kernel mode to speed up system calls.
22.
Certain efficiencies were gained by careful design, for example, the memory page size, network packet, and disk sector were all 1K byte in size.
23.
The Windows API has analogous functions ReadFileScatter and WriteFileGather; however, unlike the POSIX functions, they require the alignment of each buffer on a memory page.
24.
To achieve this, an extra 16Kx1 memory chip was added to the motherboard, which added a 9th bit to the Hires memory pages ( 0x2000 to 0x5FFF ).
25.
Instead, virtual memory pages in both processes may refer to the same pages of physical memory until one of them writes to such a page : then it is copied.
26.
"' Grant table "'is a term used to describe an interface which grants access to memory pages to Virtual Machines who do not own the pages.
27.
In modern operating systems, this generally means using virtual memory to share the memory pages containing a shared library across different processes which are protected from each other via memory protection.
28.
The only thing BadRAM cannot solve is when the booting operating system grabs hold of broken memory pages; this occurs in practice when the faults are located in low memory addresses.
29.
Hard-disk manufacturers are transitioning to 4 KB sector boundaries did not coincide with the 4 KB logical blocks, clusters and virtual memory pages common in many operating systems and file systems.
30.
Project Genie pioneered several computer hardware techniques, such as commercial time-sharing which allowed end-user programming in machine language, separate protected user modes, memory paging, and protected memory.
