Quality attribute conflicts - Experiences from a large telecommunication application
| Document type: | Conference Papers |
|---|---|
| Peer reviewed: | Yes |
| Author(s): | Daniel Häggander, Lars Lundberg, J Matton |
| Title: | Quality attribute conflicts - Experiences from a large telecommunication application |
| Conference name: | 7th IEEE International Conference on Engineering of Complex Computer Systems |
| Year: | 2001 |
| Pagination: | 96-105 |
| ISBN: | 0-7695-1160-0 |
| Publisher: | IEEE COMPUTER SOC |
| City: | SKOVDE, SWEDEN |
| ISI number: | 000169737800011 |
| Organization: | Blekinge Institute of Technology |
| Department: | Department of Software Engineering and Computer Science (Institutionen för programvaruteknik och datavetenskap) Dept. of Software Engineering and Computer Science S-372 25 Ronneby +46 455 38 50 00 http://www.bth.se/eng/ipd/ |
| Language: | English |
| Abstract: | Modern telecommunication applications must provide high availability and performance. They must also be maintainable in order to reduce the maintenance cost and rime-to-marker for new versions. Previous studies have shown that the ambition to build maintainable systems may result in ver?: poor performance. Here we evaluate an application called SDP pre-paid and show that the ambition to build systems with high performance and availability can lead to a complex software design with poor maintainability. We show that more than 85% of the SDP code is due to performance and availability optimizations. By implementing a SDP prototype with an alternative architecture we show that the code size can be reduced with an order of magnitude by removing the performance and availability optimizations from the source code and instead using modern fault tolerant hardware and third party software. The performance and availability of the prototype is as least as good as the old SDI! The hardware and third parry software cost is only 20-30% higher for the prototype. We also define three guidelines that help us to focus the additional hardware investments to the parts where it is really needed. |
| Subject: | Computer Science\Distributed Computing Software Engineering\General Computer Science\Computersystems |
