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Conclusion
In the past, the “just throw resources at the problem” approach placed a shadow over QOS, because, as we have discussed throughout this book, the importance of QOS increases as the competition for resources intensifies. But this shadow is now lifting as the days of blindly increasing resources start to come to an end. The industry is reaching a stage where efficiency is the target and QOS is the keyword. The requirement is to achieve the same, or more, with less capex and opex. QOS allows the roads that exist to be used more effectively instead of continuing to expect the answer to lie in building more roads.
To conclude this book we want to offer the patient reader a peek into the future of QOS. We’re well aware of what Niels Bohr once said: ‘Prediction is difficult, especially about the future.’ However, QOS roots and foundations don’t belong in the future, they are part of the present. So allow us our vision even though it is brief and to the point.
The role and presence of QOS will increase, and most QOS tools will become more refined and more complex as a result of industry input and requirements. However, the key concepts will remain the same – as an example, the basic queuing and scheduling tool was recently expanded to implement hierarchical queuing and scheduling with priority propagation. If the reader understands the key concepts of queuing and scheduling, there is effectively nothing “brand-new to learn” to understand the enhanced tool, so the future is ...