HA-OSCAR: the Birth of Highly Available OSCAR
Telecom applications must be built to face extreme or unplanned conditions of execution. Even in typical real-life situations, subscribers are putting a lot of pressure on carriers because of their high expectations regarding system performance and availability. Customers do not expect these applications to fail or their phone requests to be delayed beyond a typical threshold. This is increasingly true as telecom applications are providing additional services, some requiring real-time characteristics.
Carrier-grade applications must be designed with these subscribers' constraints in mind, taking into account the cost of software maintenance and upgrades, service availability and scalability. Complex distributed software demands a specific programming paradigm. It has been proven over the years that complex system interfaces tend to increase the time to debug and the probability of application failure.
AEM (asynchronous event mechanism) provides an event-driven methodology of development in order to provide robust applications with a mechanism that allows reacting quickly to system events by means of user-space callbacks. In the AEM implementation, the kernel plays a major role in handling events and increases the reliability of applications. For this reason, AEM provides a flexible solution for application designers, supplying an extensible framework that allows new functionalities to be added at runtime, without rebooting the system or restarting applications. In order to reach carrier-grade requirements, HA-OSCAR plans to supply efficient support for asynchronous events.
Linux HA: linux-ha.org
Open System Lab: www.linux.ericsson.ca
The OSCAR Revolution: /article/5559
Ibrahim Haddad (Ibrahim.Haddad@Ericsson.com) is a researcher at the Open System Lab, Ericsson Research Corporate Unit. He is coauthor, along with Richard Peterson, of the Red Hat Linux Pocket Administrator from McGraw-Hill, to be published in September 2003.
Chokchai Leangsuksun (email@example.com) is an associate professor of computer science at the Center for Entrepreneurship and Information Technology (CEnIT) at Louisiana Tech University. Prior to his academic career, he spent seven years in R&D with Lucent Technologies in system reliability and high-availability computing and telecommunication systems.
Stephen L. Scott (firstname.lastname@example.org) is a senior research scientist in the Computer Science and Mathematics Division of Oak Ridge National Laboratory, US. He is a founding member of OCG and presently is version 2 release manager. Previously he was the working group chair of the OSCAR Project.
Practical Task Scheduling Deployment
One of the best things about the UNIX environment (aside from being stable and efficient) is the vast array of software tools available to help you do your job. Traditionally, a UNIX tool does only one thing, but does that one thing very well. For example, grep is very easy to use and can search vast amounts of data quickly. The find tool can find a particular file or files based on all kinds of criteria. It's pretty easy to string these tools together to build even more powerful tools, such as a tool that finds all of the .log files in the /home directory and searches each one for a particular entry. This erector-set mentality allows UNIX system administrators to seem to always have the right tool for the job.
Cron traditionally has been considered another such a tool for job scheduling, but is it enough? This webinar considers that very question. The first part builds on a previous Geek Guide, Beyond Cron, and briefly describes how to know when it might be time to consider upgrading your job scheduling infrastructure. The second part presents an actual planning and implementation framework.
Join Linux Journal's Mike Diehl and Pat Cameron of Help Systems.
Free to Linux Journal readers.View Now!
|The Firebird Project's Firebird Relational Database||Jul 29, 2016|
|Stunnel Security for Oracle||Jul 28, 2016|
|SUSE LLC's SUSE Manager||Jul 21, 2016|
|My +1 Sword of Productivity||Jul 20, 2016|
|Non-Linux FOSS: Caffeine!||Jul 19, 2016|
|Murat Yener and Onur Dundar's Expert Android Studio (Wrox)||Jul 18, 2016|
- Stunnel Security for Oracle
- The Firebird Project's Firebird Relational Database
- Murat Yener and Onur Dundar's Expert Android Studio (Wrox)
- SUSE LLC's SUSE Manager
- Managing Linux Using Puppet
- My +1 Sword of Productivity
- Non-Linux FOSS: Caffeine!
- Doing for User Space What We Did for Kernel Space
- Google's SwiftShader Released
- SuperTuxKart 0.9.2 Released
With all the industry talk about the benefits of Linux on Power and all the performance advantages offered by its open architecture, you may be considering a move in that direction. If you are thinking about analytics, big data and cloud computing, you would be right to evaluate Power. The idea of using commodity x86 hardware and replacing it every three years is an outdated cost model. It doesn’t consider the total cost of ownership, and it doesn’t consider the advantage of real processing power, high-availability and multithreading like a demon.
This ebook takes a look at some of the practical applications of the Linux on Power platform and ways you might bring all the performance power of this open architecture to bear for your organization. There are no smoke and mirrors here—just hard, cold, empirical evidence provided by independent sources. I also consider some innovative ways Linux on Power will be used in the future.Get the Guide