RT-Linux is an operating system in which a small real-time kernel coexists with the Posix-like Linux kernel. The intention is to make use of the sophisticated services and highly optimized average case behavior of a standard time-shared computer system while still permitting real-time functions to operate in a predictable and low-latency environment. (more…)

The exact role of the phytoplankton in global climate change is currently not well understood. Learning more about this relationship is very important in developing a better understanding regarding the nature of the carbon-cycle and global climate; not from just a purely scientific view, but one that could impact the well-being of man and other living things on Earth. (more…)

RTLinux is a version of Linux that provides hard real-time capability and has been used in many real world applications, from NASA flying into the eye of Hurricane Georges, to the Jim Henson Creatureshop's (Hollywood, CA) “animatropic” character automation. RTLinux was originally developed at the New Mexico Institute of Technology. (more…)

Most Linux systems run on PC platforms. However, Linux can also be a reliable workhorse for embedded systems. This excellent article by Joel Williams provides a thorough overview of what is involved in using Linux in an embedded system application. (more…)

This technical paper — on building low cost embedded network appliances — presents Linux as the new standard for embedding in internet appliances and internet devices. As we look to the future, we see intelligent devices all communicating, interconnecting, and being controlled through the Internet — and we see Linux becoming the standard operating system that runs on these embedded processors. (more…)

Linux Hits Prime Time

The Linux operating system has received a lot of Press lately as an alternative to Microsoft Windows. However, it has also found a place in the network applications, acting as an office router, Internet firewall or as web and mail servers. Several Internet service providers have built their business on Linux by using it as their service engines. (more…)

“A notice to high tech fans staking out front row seats for the impending Microsoft-Linux showdown: There has been a sudden change of venue. The PC desktop, site of memorable software clashes past, has been deemed too old and rickety to withstand the stresses of another decade. Instead, both camps have settled on a newer, more neutral battleground: embedded systems, centerpiece of the ultra-modern… (more…)

Introduction

This article describes one way to run Linux in an embedded system with no hard disk. The application I describe is an Operator Interface in a monitor and display system developed by Boeing Flight Test. The airborne environment requires something fairly rugged, and must withstand common power interruptions. (more…)

Why Embedded Linux?

As Linux continues to gain strength in the traditional PC arena, a number of people are evaluating Linux for use in the revolution beyond the PC desktop: the Post PC revolution. Whereas the PC era created a vast homogenous platform for application development and deployment, the Post PC revolution is creating numerous vertical application opportunities ranging from… (more…)

Abstract

In this paper I will talk about the needs and requirements to successfully implement telecommunication services under GNU/Linux, particularly in terms of media processing, both for traditional telephone networks and IP based ones, as well as discussing the GNU projects recent efforts in these areas, particularly in the development of stable high performance and scalable RTP transport… (more…)

Abstract

Processes running under plain Linux usually access I/O devices through device drivers implemented monolithically in the kernel or as loadable kernel modules. This has the advantage of exposing standard interfaces for all I/O devices and enables processes running without root privileges to access I/O. (more…)

AMES d.o.o. will use embedded Linux and other open source technology in its ADVA User Experiment, an attempt to build an urban environment monitoring system in Slovenia. Currently, the company's industrial embedded systems (IESs) are based on Windows. However, technical and licensing issues have lead users to encourage the company to adopt open source software. (more…)

Abstract

Shielded Processors: Guaranteeing Sub-millisecond Response in Standard Linux By Steve Brosky Chief Scientist Concurrent Computer Systems There has been much good work in making standard Linux into a more responsive system for real-time applications. The low latency patches and the preemption patches have allowed guarantees on worst case interrupt response time at slightly above a… (more…)

Abstract

The described library is a software level that enables modules to run either in user-space (POSIX threads) or real-time (RTAI tasks), without filling up the code of ifdef and forcing a well-defined code structure. It is different from LXRT: here we twice compile the same source code in order to obtain a user space executable and a kernel module. (more…)

Ultra d.o.o. used embedded Linux to realize a 70 percent cost reduction in its remote monitoring system for GSM base stations. The PC/104-based systems enable remote dial-up or Internet access, replacing a less functional desktop PC. The system uses modularized hardware and software components, and brings new capacities for remote diagnostics and upgrades, according to Ultra. (more…)