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Topic: memory management for programs and modules
topics >
computer science >
operating system >
memory management by paging
Topic:
memory management by working sets
Topic:
object code linkers and loaders
Topic:
operating system kernel
Topic:
security by access rights
Topic:
virtual memory
Summary
Memory management is important for space and time efficiency. Usually there is a tradeoff. For example, if there is sufficient memory, no memory management may be much faster.
Subtopic: module memory
Quote: program memory requires efficient use of store, high page rate, load shedding, second chance allocation, and simplicity [»hoarCA_1971] Quote: memory manager should never allocate storage that is not used and delay allocation until needed; also deallocate storage that is never used again [»hoarCA_1971] Quote: the simplest memory system is none; i.e., main memory for one program [»hoarCA_1971] Quote: for some applications, the best memory policy is to never delete anything; can lead to spectacular improvements [»stroB_1987] Quote: Onion Skin memory management super-imposes all programs; short programs overwrite beginning of long programs; efficient for highly variable workloads such as time sharing [»hoarCA_1971] Quote: manage program memory as pages in uniformly-sized page frames, typically 1024 words; developed by Irons using a small resident program [»hoarCA_1971]
Subtopic: kernel memory
Quote: Oberon's modules only released by explicit command; imported modules released by reference counting (no reference cycles) [»wirtN9_1989] Quote: Modula-2 interpreter represents modules by data and code frame; access procedures by their index; dynamic linking [»debaEH_1990]
Subtopic: access control
Quote: EMERALDS maps the kernel into each address space; efficient system calls [»zubeKM10_2001]
Subtopic: load management
Quote: for remote processing, the kernel must encapsulate a program in an address space; prevents damage to other programs [»cherDR3_1988]
Subtopic: relocation
Quote: shed load to stay below the maximum paging rate [»hoarCA_1971]
Quote: relocate programs to allow writing programs independently of starting address and partition
[»hoarCA_1971]
Topic: memory management by paging (23 items)
Topic: memory management by working sets (18 items)
Topic: object code linkers and loaders (31 items)
Topic: operating system kernel (67 items)
Topic: security by access rights (38 items)
Topic: virtual memory
(32 items)