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Document options Level: IntermediateNandu, rational High-Level Technical Specialist,

transferred from: http://blog.csdn.net/myarrow/article/details/86828191. First Fit SplitterThe first fit allocator is the most basic memory allocator, which uses bitmap instead of a free block list to represent memory. In bitmap, if the page

Initialize Mem_map Mem_map is an array of struct page that manages all the physical memory pages in the system. Create and assign Mem_map memory areas during system startup. In the UMA architecture, the free_area_init () function assigns the

Document directory 2.1 page Directory (PGD and PMD) 2.2 page table entry 2.3 How to access physical memory through a 3-level page table 1. Linux physical memory Three-Level Architecture For memory management, linux adopts a design model

Transferred from: http://www.wowotech.net/linux_kenrel/per-cpu.htmlFirst, Source: Why the introduction of PER-CPU variables?1. Performance issues with Lock busPrior to ARMV6 on the arm platform, the SWP and SWPB directives were used to support

First, Source: Why the introduction of PER-CPU variables?1. Performance issues with Lock busPrior to ARMV6 on the arm platform, the SWP and SWPB directives were used to support access to the shared memory: SWP , , [] In Rn, the memory

First, preface3 memory models are supported in the Linux kernel, flat memory model,discontiguous and sparse. The so-called memory model, in fact, is from the CPU point of view, the distribution of its physical memory, in the Linux kernel, the use of

1. Overview Synchronization is a classic issue in the operating system and is born with concurrent processing. There are three common concurrent processing situations in the modern architecture: (1) multiple threads run on a single

E0.9 seconds, MB"So you have at least proved that your IQ is higher than the golden sky, and that you have proved that you are not a low-intelligence child, good."But this time, I seem to be stuck, you give me a hit. Brave boy, go and make a miracle!

Computer ORGANIZATION and ARCHITECTURE designing for performance ninth EDITIONIn terms of commercial products, the both common approaches to providing aMultiple-processor system to support applications is SMPs and clusters. For someyears, another