What is virtual memory?
Virtual memory allows you to use more memory than your machine has. If
something is transparent, it's there, but you can't see it; if something is
virtual, you can see it, but it isn't there. Virtual memory is implemented
by paging, in which only the parts (called pages) of programs actually used
are brought into memory. When the memory required by a program exceeds the
physical memory of the machine, unused pages are swapped out to disk.
Virtual memory allows you to use more memory than your machine has. If
something is transparent, it's there, but you can't see it; if something is
virtual, you can see it, but it isn't there. Virtual memory is implemented
by paging, in which only the parts (called pages) of programs actually used
are brought into memory. When the memory required by a program exceeds the
physical memory of the machine, unused pages are swapped out to disk.
Related:
- You mean Virtual Memory has to actually exist?!?
- moby /moh'bee/
[MIT: seems to have been in use among
model railroad fans years ago.
Derived from Melville's "Moby Dick" (some say from `Moby Pickle').... - VVM Vaporise Virtual Memory
- memory leak n.
An error in a program's dynamic-store
allocation logic that causes it to fail to reclaim discarded
memory, leading to eventual collapse due to memory exhaustion.
Also (esp. at CMU) called core leak. These problems were severe on older machines with small, fixed-size address spaces, and special "leak detection" tools were commonly written to root them out.... - virtual adj.
[via the technical term `virtual memory',
prob.
from the term `virtual image' in optics] 1. Common alternative to logical... - virtual: [via the technical term `virtual memory', prob.
from the term `virtual image' in optics] adj. 1.... - memory leak: n. An error in a program's dynamic-store allocation
logic that causes it to fail to reclaim discarded memory, leading
to eventual collapse due to memory exhaustion.
Also (esp. at CMU) called {core leak}. These problems were severe on older machines with small, fixed-size address spaces, and special "leak detection" tools were commonly written to root them out.... - Memory is like an orgasm. It's a lot better if you don't have to fake it.
-- Seymore Cray, on virtual memory... - wap vt.
1. [techspeak] To move information from a
fast-access memory to a slow-access memory (`swap out'), or vice
versa (`swap in').
Often refers specifically to the use of disks as `virtual memory'....
