A real-time operating system (RTOS) for use with minimal-memory controllers has a kernel for managing task execution, including context switching, a plurality of defined tasks, individual ones of the tasks having subroutines callable in nested levels…

原文地址:http://blog.csdn.net/jinzhuojun/article/details/13297447 虽然摩尔定律让我们的计算机硬件得以以指数速度升级,但反摩尔定律又不断消减这些升级所带来的好处.其原因之一就是面对硬件的更新换代,程序员似乎不用再对内存“精打细处“了.而近年来随着穿戴式设备和大数据平台的兴起(一个是内存本身受限,一个是对内存的需求巨大),让内存的有效利用又成为了值得开发人员关注的热点. <Small MemorySoftware: Patterns For…

http://www.embedded.com/design/embedded/4231326/Taking-advantage-of-the-Cortex-M3-s-pre-emptive-context-switches The ARM Cortex-M3 (CM3) architecture is a 32-bit microcontroller core designed to replace many 8-bit and 16-bit devices by offering faste…

发行注记:http://www.freebsd.org/releases/10.0R/relnotes.html 下文翻译中... 主要有安全问题修复.新的驱动与硬件支持.新的命名/选项.主要bug修复.软件升级. 2.1. 安全通报 2.2. 内核变化 The use of unmapped VMIO buffers eliminates the need to perform TLB shootdown for mapping on buffer creation and reuse, gr…

参考:http://www.design-reuse.com/articles/24503/nand-flash-memory-embedded-systems.html Abstract : This paper presents fundamental information about NAND Flash memory used in Embedded Systems. It discusses various aspects of this storage media such as…

#ifndef __CMSIS_OS_H__ #define __CMSIS_OS_H__ #include <stdint.h> #include <stddef.h> #include "RTOS.h" // API version (main [31:16] .sub [15:0]) #define osCMSIS 0x10002 // RTOS identification and version (main [31:16] .sub [15:0]) #…

How to Use DTrace to Troubleshoot Java Native Memory Problems on Oracle Solaris 11 Hands-On Labs of the System Admin and Developer Community of OTN by Wang Yu, Vincent Liu, and Gary Wang This lab will introduce the basic concepts of DTrace and provid…

Summary Spark does not have a good mechanism to select reasonable RDDs to cache their partitions in limited memory.  --> Propose a novel selection algorithm, by which Spark can automatically select the RDDs to cache their partitions in memory accordi…

It’s coming up on a year since we published our last memory review; possibly the longest hiatus this section of the site has ever seen. To be honest, the reason we’ve refrained from posting much of anything is because things haven’t changed all that…

A system and method for accessing memory are provided. The system comprises a lookup buffer for storing one or more page table entries, wherein each of the one or more page table entries comprises at least a virtual page number and a physical page nu…