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NUMA对MySQL InnoDB的性能影响
http://blog.jcole.us/2010/09/28/mysql-swap-insanity-and-the-numa-architecture/NUMA架构的CPU下,一个CPU有多个核心,那么每个CPU成为一个NODE关闭这个特性时一个NODE使用自己的本地内存,而尽量不去访问其他NODE的内存,除非本地内存满了Linux如何处理NUMA架构1把处理器分到节..
分类:数据库   时间:2014-12-04 18:15:22    阅读次数:226
串口WIF简单I调试
串口WIF简单I调试/***********************************************************************Title:Wifi串口调试Hardware:WirelessDemo+ESP8266串口WIFIAuthor:小XDate:2014年...
分类:其他好文   时间:2014-12-03 18:47:28    阅读次数:244
Android - Android操作系统结构
Android操作系统结构本文地址:http://blog.csdn.net/caroline_wendy结构图:1. Linux内核(内核空间)可移植性、安全性、实用功能。2. 本地层(用户空间)(1) HAL(Hardware Abstraction Layer):硬件抽象层,使用共享本地库抽象了每个主要的设备驱动程序,这个库是一个对象, 支持任何主要硬件驱动程序的共同接口。(2) 本地库:C...
分类:移动开发   时间:2014-11-29 17:38:20    阅读次数:280
No Nios II target connection paths were located
NIOS II 运行应用程序Run as ->Nios II Hardware时出现错误: No Nios II target connection paths were located. Check connections and that a Nios II .sof is downloaded. 尝试点击Refresh Connections然后Apply可能会解决问题,如图:...
分类:移动开发   时间:2014-11-27 16:26:50    阅读次数:3075
Microcomputer Principle - Memory Reordering
?? A trip to main memory costs hundreds of clock cycles on commodity hardware. Processors use caching to decrease the costs of memory latency by orders of magnitude. These caches re-order pending mem...
分类:其他好文   时间:2014-11-25 14:26:57    阅读次数:159
android sdk api的层次结构
一、系统级:android.accounts android.app 1、OS 相关 android.os android.os.storage android.hardware(传感器) android.security android.drm(这个应该是为所有app服务的) 2、VM 相关 da...
分类:移动开发   时间:2014-11-24 16:44:29    阅读次数:176
【2014-11-23】《The Hardware/Software Interface》– Section 11
Data in Java Java has pointers – they are called ‘referenes’ Null is typically represented as 0 Characters and strings Two-byte Unicode instead of ASC...
分类:其他好文   时间:2014-11-23 17:28:35    阅读次数:187
【2014-11-23】《The Hardware/Software Interface》– Section 10
The malloc package void* malloc(size_t size) void free (void *p) other functions calloc: Version of malloc that initializes allocated block to zero re...
分类:其他好文   时间:2014-11-23 17:18:55    阅读次数:180
【2014-11-23】《The Hardware/Software Interface》– Section 7
Cache Definition: computer memory with short access time used for the storage of frequently or recently used instructions or data(i-cachhe and d-cache...
分类:其他好文   时间:2014-11-23 15:40:24    阅读次数:221
【2014-11-23】《The Hardware/Software Interface》– Section 8 (continue)
Exceptions: An exception is transfer of control to the operating system in response to some event. exception processing by exception handler Process(进...
分类:其他好文   时间:2014-11-23 15:38:24    阅读次数:271
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