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Seven technical articles from IBM -- Linux, Java, Wi-Fi, grid apps, and more
Jun. 26, 2003

IBM has published the following seven technical articles and tutorials on its developerWorks website. They cover a range of interesting (though not embedded) technical topics. Some require free registration. Enjoy . . .
  • Emulate legacy operating systems on Linux -- This article shows you how Linux is used to emulate a wide variety of operating systems. More than mere academic exercises, these "hosted OSes" are practical investments for many server rooms. One of the best things to do with a Linux box is to run programs for other operating systems on it. It can simplify your life considerably.

  • A guide for Living in Emacs -- This tutorial gives you a guide to the basics of using Emacs, a popular modeless text editor with many powerful features. The tutorial covers fundamental concepts and common activities, and then builds on those foundations to quickly familiarize you with this excellent editor.

  • Better Java garbage collection with IBM's JDK 1.4.0. Incremental Compaction -- This article discusses incremental compaction, a new feature in the memory management component of IBM JDK 1.4.0. Incremental compaction is a way of spreading compaction work across different garbage collection cycles, thereby reducing pause times. The authors discuss the need for incremental compaction, the compaction phases at a high level, and some runtime parameters. They also explain how to interpret changes in the verbosegc output.

  • Taming Wi-Fi with new security bundles -- Wi-Fi networks have, up until this point, been a bit like the Wild West: exciting, but difficult to control and keep safe. Now, a host of new management and security options are springing up as Wi-Fi penetrates corporate environments. This article reviews the next-generation enterprise Wi-Fi products that are designed to quell ongoing security fears.

  • OptimalGrid for Linux -- autonomic computing on the Grid -- OptimalGrid aims to simplify creating and managing large-scale, connected, parallel grid applications. It optimizes performance and includes autonomic grid functionality. OptimalGrid manages partitioning, problem piece deployment, runtime management, dynamic level of parallelism, dynamic load balancing, and even system fault tolerance and recovery. This article shows you how the OptimalGrid system is designed to bring the immense potential of Grid computing easily within reach of developers who aren't grid infrastructure experts. Go here to get the free OptimalGrid download.

  • Network programming with the Twisted framework -- Twisted is an increasingly popular pure-Python framework for programming network services and applications. While there are a large number of loosely coupled modular components within Twisted, a central concept to the framework is the idea of non-blocking asynchronous servers. This article introduces you to this style of programming -- a novel one for developers accustomed to threading or forking servers, but one capable of great efficiency under heavy loads.

  • James the Java Apache Mail Enterprise Server -- These articles form a two-part series on the Java Apache Mail Enterprise Server, also known as James. The first article provides a high-level overview, briefly touching on the Apache group's design objectives, and describes how to install and configure a workable development environment. In the second article, you will be taken beyond the basic James infrastructure and implement a practical application for flagging users as available or unavailable, and for automatically sending custom messages to senders from users who chose to make themselves unavailable. These articles lay a foundation for understanding James and for developing server-side email applications.


(Click here for further information)


FUEL Database on MontaVista Linux
Whether building a mobile handset, a car navigation system, a package tracking device, or a home entertainment console, developers need capable software systems, including an operating system, development tools, and supporting libraries, to gain maximum benefit from their hardware platform and to meet aggressive time-to-market goals.

Breaking New Ground: The Evolution of Linux Clustering
With a platform comprising a complete Linux distribution, enhanced for clustering, and tailored for HPC, Penguin Computing¿s Scyld Software provides the building blocks for organizations from enterprises to workgroups to deploy, manage, and maintain Linux clusters, regardless of their size.

Data Monitoring with NightStar LX
Unlike ordinary debuggers, NightStar LX doesn¿t leave you stranded in the dark. It¿s more than just a debugger, it¿s a whole suite of integrated diagnostic tools designed for time-critical Linux applications to reduce test time, increase productivity and lower costs. You can debug, monitor, analyze and tune with minimal intrusion, so you see real execution behavior. And that¿s positively illuminating.

Virtualizing Service Provider Networks with Vyatta
This paper highlights Vyatta's unique ability to virtualize networking functions using Vyatta's secure routing software in service provider environments.

High Availability Messaging Solution Using AXIGEN, Heartbeat and DRBD
This white paper discusses a high-availability messaging solution relying on the AXIGEN Mail Server, Heartbeat and DRBD. Solution architecture and implementation, as well as benefits of using AXIGEN for this setup are all presented in detail.

Understanding the Financial Benefits of Open Source
Will open source pay off? Open source is becoming standard within enterprises, often because of cost savings. Find out how much of a financial impact it can have on your organization. Get this methodology and calculator now, compliments of JBoss.

Embedded Hardware and OS Technology Empower PC-Based Platforms
The modern embedded computer is the jack of all trades appearing in many forms.

Data Management for Real-Time Distributed Systems
This paper provides an overview of the network-centric computing model, data distribution services, and distributed data management. It then describes how the SkyBoard integration and synchronization service, coupled with an implementation of the OMG¿s Data Distribution Service (DDS) standard, can be used to create an efficient data distribution, storage, and retrieval system.

7 Advantages of D2D Backup
For decades, tape has been the backup medium of choice. But, now, disk-to-disk (D2D) backup is gaining in favor. Learn why you should make the move in this whitepaper.

 


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