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linux用户空间和内核空间
When a process running in user mode requests additional memory, pages are allocated from the list of free page frames maintained by the kernel. This l...
分类:系统相关   时间:2014-09-28 22:27:25    阅读次数:419
[自制简单操作系统] 8、多任务(三)——多窗口与优先级
前言>_____level[i].running = 0; 3 taskctl->level[i].now = 0; 4 } 5 task = task_alloc(); 6 task->flags = 2; /* 活动中标志 */ 7 task->priority = 2; //任...
分类:其他好文   时间:2014-09-27 00:28:19    阅读次数:358
安装CentOS虚拟机 starting postfix failed 错误
The full path to the file is ‘/etc/postfix/main.cf‘ Just add or modify your hostname and restart the postfix service by running ‘service postfix restart‘. Please note mydomain.net. is an invalid ho...
分类:其他好文   时间:2014-09-26 12:24:59    阅读次数:614
ios background task
今天要实现一个需求,当用户触摸HOME键,将应用切换到后台时,启动自动备份的任务。这涉及到ios的后台任务处理,本文简单总结一下首先,ios app有5种状态,分别是:not running, inactive, active, background, suspended,详情请看官方的guide:...
分类:移动开发   时间:2014-09-25 15:22:39    阅读次数:247
mysql主从同步错误解决和Slave_IO_Running: NO
1、出现错误提示、SlaveI/O:errorconnectingtomaster'backup@192.168.1.x:3306'-retry-time:60retries:86400,Error_code:1045解决方法从服务器上删除掉所有的二进制日志文件,包括一个数据目录下的master.i...
分类:数据库   时间:2014-09-25 14:02:50    阅读次数:340
怎样从XenServer上删除存储仓库
了当一个存储仓库出现问题或者你想停止使用一个存储仓库时,怎样从XenServer主机上删除存储仓库。背景XenServer的存储仓库是用来存储ISO或者时VDI的。存储仓库通过物理块设备(PBD)与XenServer相连接,PBD包含了存储仓库(SR)的配置信息。当你从XenServer主机上分离或者删除S..
分类:其他好文   时间:2014-09-25 12:29:29    阅读次数:237
Enabling Active Directory Authentication for VMWare Server running on Linux《转载》
Enabling Active Directory Authenticationfor VMWare Server running on LinuxVersion 0.2 - Adam Breidenbaugh - 2007-06-29PurposeThe purpose of this guide...
分类:系统相关   时间:2014-09-25 05:17:28    阅读次数:523
Operating system management of address-translation-related data structures and hardware lookasides
An approach is provided in a hypervised computer system where a page table request is at an operating system running in the hypervised computer system...
分类:其他好文   时间:2014-09-24 00:22:26    阅读次数:403
Seconds_Behind_Master之困惑与解释
1.以前一直对这个参数很模糊,今天闲下心来看源码文件sql/rpl_slave.cc(MySQL5.6.16)if(mi->rli->slave_running){/*CheckifSQLthreadisattheendofrelaylogCheckingshouldbedoneusingtwoconditionscondition1:comparethelogpositionsandcondition2:comparethefilenames(to..
分类:其他好文   时间:2014-09-23 04:25:34    阅读次数:378
Docker 常用命令
命令行的组成结构:Commands: attach Attach to a running containerbuild Build a container from a Dockerfilecommit Create a new image from a container's...
分类:其他好文   时间:2014-09-23 01:58:33    阅读次数:335
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