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10 from IBM: IMS, slabs, TCs, subversion, db4o, rails, WTP, LAMP...
May 24, 2007

IBM has published the following new technical articles, tutorials, and downloads on its DeveloperWorks and AlphaWorks websites. They cover a range of interesting (though not necessarily embedded) technical topics, primarily related to Linux and open source system development. Some require free registration.


  • Simulators for IP Multimedia Subsystem -- Get rich multimedia services across next generation packet-switched and traditional circuit-switched networks with IP Multimedia SubSystem (IMS). These are component simulators that enable simple testing and message validation and that are not dependent on IMS servers or architecture.

  • Anatomy of the Linux Slab Allocator -- Minimize the time required to manage memory and maximize available memory for general usage with the slab allocator. This article explores the ideas behind the slab allocator and examines its interfaces and their use. It uses the Linux kernel method that originated in Solaris of allocating memory of objects based on their size.

  • Explore Powerful UNIX Writer's Tools -- Using new, open source equivalents of the classic UNIX Writer's Workbench.

  • In pursuit of code quality: Beware the tight couple! -- You know tight coupling is bad news and you really want to avoid it in your designs -- but the question is how. Learn how to recognize a tightly coupled system and then disentangle it using the Dependency Inversion Principle.

  • Performance Tuning Subversion -- Subversion is one of the few version control systems that can store binary files using a delta algorithm. In this article, senior developer David Bell explains why Subversion's performance suffers when handling binaries and suggests several ways to work around the problem.

  • Java: Database Refactoring with db4o -- Refactoring Java code is far simpler than refactoring a relational database, but fortunately that isn't so much the case with object databases. Learn another advantage to this favorite object database.

  • Real world Rails: Caching in Rails -- For some, Rails is hyper productive and for others Ruby is a toy. One camp says its well marketed and the other camp tells us Ruby is over hyped. Like many newer technologies, Rails also has a reputation as unproven with limited scalability. Unlike the C and Java languages, Ruby is interpreted, with all of the inherent performance handicaps. This article explores the Ruby caching strategies that are available to you to increase performance.

  • LAMP Bottleneck Solutions: Apache and PHP -- Linux, Apache, MySQL, and PHP form the basis of the LAMP architecture for Web applications. This article focuses on steps you can take to optimize Apache and PHP, because as the load on an application increases, the bottlenecks in the underlying infrastructure become more apparent in the form of slow response to user requests.

  • Translating Messages in Second Life -- In the last part of our exploration of the Second Life software, learn how to plug a simple command-line program into Second Life that provides a language translation function. This article looks at the technical issues involved in translating chat messages in Second Life.

  • Build High Performance Apps with RapidMind -- Take a guided tour of the RapidMind Development Platform with Michael McCool. The platform provides a simple single-source mechanism to develop portable high-performance applications for multicore processors. In particular, you can use it to develop applications by writing a single-threaded C++ program using an existing C++ compiler.



(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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