uma definition

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

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

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, namely the flat memory Model,discontiguous memory model and the sparse. The configuration options for the three memory models corresponding to the Linux kernel are:

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

I. New and Old Version schedulers in LinuxComparison Before kernel version 2.6, the scheduler had obvious restrictions when many tasks were active. This is because the scheduler uses an algorithm with the complexity of O (n. In this scheduler, the

Summary of KVM Virtualization CPU TechnologyA NUMA technology introductionNUMA is a technology solution that solves the multi-CPU work, and we first review the technical architecture history of the multi-CPU work together. There are three main

This paper analyzes the whole process of the MAC framework of FreeBSD 10.0 "http://xrefs.info/freebsd-10.0/".There is a comment in "/USR/SRC/SYS/SECURITY/MAC/MAC_FRAMEWORK.C" that describes the three main features of the MAC Framework implementation:

Imagecopyresized (PHP3, PHP44.0.0) imagecopyresized -- encode (resourcedst_im, resourcesrc_im, intdstX, intdstY, intsrcX imagecopyresized (PHP 3, PHP 4> = 4.0.0) Imagecopyresized -- Copy and resize part of an image Description Int imagecopyresized (