除了必要的InitializeSecurityDescriptor和SetSecurityDescriptorDacl, 内存映射文件名必须GLOBAL开头.…
Share Memory By Communicating - The Go Programming Language https://golang.google.cn/doc/codewalk/sharemem/…
Share Memory By Communicating - The Go Programming Language https://golang.google.cn/doc/codewalk/sharemem/ One suggestion (made by Rob Pike) for concurrent programming is don't (let computations) communicate by sharing memory, (let them) share memor…
通过硬件的IOMMU,内核提供的共享内存.VFIO可以实现. REF: 1. offical DPDK API Doc, 简书有翻译版 DPDK编程指南(翻译)(一)  (二十七) 2. dpdk vhost研究(一)/(二) 3. vhost-user 与其他的对比 virtio,vhost 和vhost-user 共享内存原理: [精品]Linux共享内存实例及文件映射编程及实现原理 Linux共享内存实例及文件映射编程及实现原理 文件共享 Linux文件共享(六)——描述符传递 qemu…
Single instance of a MemoryCache across multiple application pools on the same server [duplicate] You could create a separate Web Api project and host your implementation of the MemoryCache there. Then expose an api that gets / sets items from the ca…
header for public argument:shmdata.h #define TEXT_SZ 2048 struct shared_use_st { int written; char text[TEXT_SZ]; }; #endif shmread.c #include <unistd.h> #include <stdlib.h> #include <stdio.h> #include <sys/shm.h> #include "sh…
Virtual Address Space Memory Pools Memory Performance Information Virtual Memory Functions Heap Functions File Mapping Large Memory Support Global and Local Functions Standard C Library Functions Comparing Memory Allocation Methods ==================…
A method and apparatus enable Internet of Things (IoT) services based on a SMART IoT architecture by integrating connectivity, content, cognition, context, cloud, and collaboration. Joint optimization of a combination of any of connectivity, content,…
Symptom You have questions related to the SAP HANA memory. You experience a high memory utilization or out of memory dumps. Environment SAP HANA Cause 1. Which indications exist for SAP HANA memory problems?2. How can I collect information about the…
问题说明:在一台zabbix被监控服务器上(64位centos6.8系统,64G内容)启动zabbix_agent,发现进程无法启动,10050端口没有起来! 启动zabbix_agent进程没有报错,但10050端口没有正常启动起来.[root@ctl ~]# /usr/local/zabbix/sbin/zabbix_agentd[root@ctl ~]# ps -ef|grep zabbix_agentroot 27506 27360 0 11:07 pts/5 00:00:00 grep…
测试环境centos7 ,内核版本4.20 内核使用cgroup对进程进行分组,并限制进程资源和对进程进行跟踪.内核通过名为cgroupfs类型的虚拟文件系统来提供cgroup功能接口.cgroup有如下2个概念: subsystem:用于控制cgroup中的进程行为的内核组件,可以在/proc/cgroups查看所有支持的subsystem,subsystem也别称为resource controller:第二列为croup id:第三列为cgroup中进程数目. # cat /proc/cg…
Oracle Database creates and uses memory structures for various purposes. For example, memory stores program code being run, data that is shared among users, and private data areas for each connected user. Two basic memory structures are associated wi…
C# .Net 多进程同步 通信 共享内存 内存映射文件 Memory Mapped 转 节点通信存在两种模型:共享内存(Shared memory)和消息传递(Messages passing). 内存映射文件对于托管世界的开发人员来说似乎很陌生,但它确实已经是很远古的技术了,而且在操作系统中地位相当.实际上,任何想要共享数据的通信模型都会在幕后使用它. 内存映射文件究竟是个什么?内存映射文件允许你保留一块地址空间,然后将该物理存储映射到这块内存空间中进行操作.物理存储是文件管理,而内存映射文…
An embodiment provides a virtual address cache memory including: a TLB virtual page memory configured to, when a rewrite to a TLB occurs, rewrite entry data; a data memory configured to hold cache data using a virtual page tag or a page offset as a c…
问题状态:zabbix_server 不能启动,系统CentOS 6.7 原因分析:这是因为内核对share memory的限制造成的. 用到如下命令ipcs [-m|l|a],sysctl [-a|p] [root@server01 ~]# ipcs -l ------ Shared Memory Limits -------- max number of segments = 4096 max seg size (kbytes) = 0 max total shared memory (kb…
http://hi.baidu.com/pengkuny/item/c8070b388d75d481b611db7a 以前以为 shared memory 是一个万能的 L1 cache,速度很快,只要数据的 size 够小,能够放到 shared memory,剩下的事情我就不用操心啦.实际上不是这样,bank conflict 是一个绕不过去的问题,否则,性能会降得很低,很低,很低... ----------------------------------------------------…
超文本传输协议版本 2 IETF HTTP2草案(draft-ietf-httpbis-http2-13) 摘要 本规范描述了一种优化的超文本传输协议(HTTP).HTTP/2通过引进报头字段压缩以及多路复用来更有效利用网络资源.减少感知延迟.另外还介绍了服务器推送规范. 本文档保持对HTTP/1.1的后向兼容,HTTP的现有的语义保持不变. 1 介绍 The Hypertext Transfer Protocol (HTTP) is a wildly successful protocol.…
CLUSTER_DATABASE Property Description Parameter type Boolean Default value false Modifiable No Range of values true | false Basic Yes Real Application Clusters For all instances, the value must be set to TRUE. CLUSTER_DATABASE is a Real Application C…
MINIX3 系统任务分析  7.1 MINIX3 系统任务概要  MINIX3 怎么来给用户提供丰富的服务呢?除了中断,异常处理,除了时钟服务. 程序员总是希望一个操作系统给他提供足够的服务,使得他能够做出更加高效安 全的程序来.在 MINIX3 中,它提供了一种系统任务机制.这个机制的作用就是 介绍任何想调用系统调用的函数消息,之后将其进行一个精准的处理,使得其能 够对程序员提供帮助.  MINIX3 整体架构设计成 C/ S 模型,以 PM 为例,PM 其实在 MINIX3 看来就是 就是…
1.如果你是win2003,那么一定要安装sql的补丁sp3a以上版本SP 检查你的SQL有没有打补丁,没有的话要打上补丁,检查的方法是在查询分析器中运行:select @@version如果出来的版本号是8.00.760以下,则表明你未安装sp3的补丁,要装上. SQL补丁下载:全部补丁的位置http://www.microsoft.com/downloads/details.aspx?displaylang=zh-cn&FamilyID=9032f608-160a-4537-a2b6-4cb…
SystemServer的启动 frameworks/base/services/java/com/android/server/SystemServer.java: run() 其中调用ActivityManagerService.installSystemProviders(), 最终会调用到frameworks/base/packages/SettingsProvider/src/com/android/providers/settings/下 的各个content providers的o…
nginx (pronounced "engine x") is a free open source web server written by Igor Sysoev, a Russian software engineer. Since its public launch in 2004, nginx has focused on high performance, high concurrency and low memory usage. Additional feature…
昨天晚上第一次翻译了<20 Command Line Tools to Monitor Linux Performance>中的前十个命令,翻译得不是很好,今天晚上继续把后面的十个也翻译给大家吧,第一次写博客,写的不是特别的好,希望大家不要介意,也希望大家觉得有什么不对的地方能够多多指教,毕竟小弟还是初学者.下面我们开始学习下面十个命令吧!…
书籍 HTTP权威指南 <- @Fenng Introduction to Information Retrieval <- @陈利人 Lua 源码欣赏 <- @简悦云风 The Architecture of Open Source Applications <- @CloudFoundry(已陆续读了部分章节,赞!图灵社区有章节翻译) 程序设计实践 <- @寒冬winter 推荐语:薄薄200页,就能让一个掌握一门编程语言基础的人成为一个合格的程序员,其中“算法和数据结构…
QConf的组件: ZooKeeper as the server, restore all configurations, so the limit data size of single configuration item is 1MB, since the size limit of Znode. qconf_agent is a daemon run on client machine, maintain data in share memory. share memory, QCon…
dumpsys dumpsys is a tool that runs on Android devices and provides information about system services. You can call dumpsys from the command line using the Android Debug Bridge (ADB) to get diagnostic output for all system services running on a conne…
Karma is an MVC framework for Unity3D. Because of how Unity is structured, it actually turns out to be an MVCP architecture (Model/View/Controller/Presenter) where the Presenter is a MonoBehaviour that serves as an intermediary between the Controller…
http://blog.grexit.com/manage-data-across-clouds/ That the average small business uses a cloud service to enable collaboration and backup is pretty much a foregone conclusion. But what’s also rather common is the practice of using multiple cloud acco…
该资料已上传至本人QQ群空间,如需该资料,可到本人QQ群空间查找.下面贴表文本: Oracle Performance Diagnostic GuideHang/LockingVersion 3.1.0 January 13, 2009Welcome to the Oracle Performance Diagnostic Guide This guide is intended to help you resolve query tuning, hang/locking, and slow d…
Frequently Asked Questions (FAQ) Origins 起源 What is the purpose of the project? What is the history of the project? What's the origin of the gopher mascot? Why did you create a new language? What are Go's ancestors? What are the guiding principles in…