On cool and clear afternoons in the San Francisco Bay Area, I often see jet contrails going north to south. I imagine passengers jets from East Asia or cargo jets from Anchorage, Alaska flying to Los Angeles (LAX). While it would be logical to assume these lines trace straight line paths between airports, aircraft fly slightly crooked paths through a series of predetermined way points. These airways are analogous to a highway system crossing the continent by linking major cities along the way.
Like the U.S. Interstate Highway System, air traffic control systems are based on 50-year old technologies, in the case of air traffic control, ground-based radars and voice communications over radio.
The journal Dr. Dobb’s has just published an introductory article on DDS. If you’re new to DDS or to real-time communications in general, take a look. It’s a quick read, and it does a good job of summarizing the rich functionality of DDS and the impressive performance relative to other technologies. More…
Embedded Market Forecasters (EMF) just announced the availability of valuable new research that analyzes the Return On Investment (ROI) of different middleware approaches. I’m happy to report that RTI Data Distribution Service outperformed both commercial and in-house alternatives in nearly every category EMF measured. Given this, it is not surprising that EMF also found RTI was the most widely used embedded middleware supplier.
This broad-based research provides the first independent quantification of the reduction in integration time, cost and risk you can expect from RTI Data Distribution Service. Findings include:
- Up to 45% Lower Total Cost of Development: The average cost of application development was substantial for projects using internally developed “Roll-Your-Own” (RYO) middleware ($1.61M) and most commercial solutions ($1.34M); however, projects using RTI middleware enjoyed much lower costs ($0.89M).
- Up to 47% Lower Cost Overrun: The average cost overrun was similar for projects using RYO (11.3%) and most commercial middleware (10.1%). Projects using RTI finished closest to expected cost (6.0%).
- Lower Testing Costs: In projects where the cost of testing was less than 30 percent of the total development cost, RYO (72.5%) showed an advantage over commercial (65.5%) middleware. Projects using RTI’s commercial middleware, however, had testing costs less than 30 percent of the total development cost 84.6% of the time.
- Greater Probability of Meeting Design Requirements: Final design outcomes using commercial middleware in general, and RTI in particular, were much closer to pre-design expectations than RYO developments for performance, functionality, features and schedule.
This report was based on independent research and a comprehensive survey of developers conducted by Dr. Jerry Krasner
, EMF’s founder and principal analyst. Dr. Krasner is a widely recognized authority on embedded systems and has over 30 years of embedded industry experience.
Visit EMF’s web site to download the full report for free: Choosing between Commercial and ‘Roll Your Own’ Embedded Communication Integration Middleware.