I was recently talking to a client was concerned about the development processes used within their organisation. This is a challenge that has been tackled by many organisations and one which the Software Engineering Institute looked at years ago and produced their Capability Maturity Model (CMM) to help with. I stated that I would find and send them a summary article to help. The challenge really started at that point. Continue reading ‘A quick look at CMMi’ »
Posts tagged ‘optimisation’
What is the relationship between the performance of a system and its cost of ownership? This isn’t the start of a bad joke, but a question that I have needed to consider in detail recently. The question is more involved than it may seem initially, because of the factors that are implicit in the necessary analysis: Continue reading ‘Performance and cost of ownership’ »
Let us assume that you have started a piece of performance modelling. You have chosen a set of key transactions, or better still have been told what is most important by the business. You may have an idea of the performance levels that the business need (more on this another time), and you start working with the business to work out the volumes that they are expecting to put through the system. To do the appropriate performance modelling you will need to define the behaviour of a “typical user” and then scale this up to produce a total behaviour profile for all users. It is unfortunate that you are unlikely to receive figures that can be used directly from your business users. You have the following choices at this point: a) educate them in the modelling you are doing and the format you need the numbers in, or b) take the numbers they have provided and reproduce them from your modelling. Continue reading ‘Business volumes and performance modelling’ »
