class Program { static void Main(string[] args) { Stopwatch s = new Stopwatch(); s.Start(); EvenNumbersSum(); OddNumbersSum(); s.Stop(); Console.WriteLine("before using multiple threads"+s.ElapsedMilliseconds); s = new Stopwatch(); s.Start(); Th…

Part 95   Deadlock in a multithreaded program class Program { static void Main(string[] args) { Console.WriteLine("main start"); Account a1 = ,); Account a2 = ,); AccountManager m1 = ); Thread t1 = new Thread(m1.Transfer); t1.Name = "t1&quo…

如何设计一个支持高并发的高性能缓存库 不 考虑并发情况下的缓存的设计大家应该都比较清楚,基本上就是用map/hashmap存储键值,然后用双向链表记录一个LRU来用于缓存的清理.这篇文章 应该是讲得很清楚http://timday.bitbucket.org/lru.html.但是考虑到高并发的情况,如何才能让缓存保持高性能呢? 高并发缓存需要解决2个问题:1. 高效率的内存分配:2. 高效率的读取,插入和清理数据.关于第一个问题涉及到高效率的内存分配器,使用成熟的jemalloc/tcmall…

The code for this tutorial can be downloaded here: threadworms.py or from GitHub. This code works with Python 3 or Python 2, and you need Pygame installed as well in order to run it. Click the animated gif to view a larger version. This is a tutorial…

http://www.ilsistemista.net/index.php/virtualization/1-virtual-machines-performance-comparison.html?limitstart=0 Today, "Virtual machine" seems to be a magic words in the computer industry. Why? Simply stated, this technology promise better serv…

https://katyscode.wordpress.com/2013/05/17/introduction-to-multi-threaded-multi-core-and-parallel-programming-concepts/ In this article I’m going to present a gentle and modernized introduction to multi-threaded and parallel programming. While there…

https://en.wikipedia.org/wiki/Amdah's_law Amdahl's law is often used in parallel computing to predict the theoretical speedup when using multiple processors. For example, if a program needs 20 hours using a single processor core, and a particular par…

This tutorial demonstrates the use of the boost::asio::strand class to synchronise callback handlers in a multithreaded program. The previous four tutorials avoided the issue of handler synchronisation by calling the boost::asio::io_service::run() fu…

In this Document   Purpose   Scope   Details   A) Database Init.ora Parameters   B) Concurrent Program Controls setup   C) General Ledger Optimizer program   C.1) To create and drop indexes for your chart of accounts segments:   C.2) To update statis…

APPLIES TO: Oracle Product Hub - Version 12.1.1 to 12.1.1 [Release 12.1] Oracle Inventory Management - Version 12.1.1 to 12.1.1 [Release 12.1] Oracle Item Master - Version 12.0.6 to 12.0.6 [Release 12] Information in this document applies to any plat…