Identifying Performance Bottlenecks

How well does it work? How fast is it? These questions mean essentially the same thing if we're talking about software. Although the question about saving technical resources isn't as relevant as it was in the early years of the computer industry, developers still should be careful about the efficiency of systems. Even though efficiency starts with hardware, modern computers have such large instruction sets that it's possible to use them in any manner.

Engineers spend a lot of time and effort to avoid a drain on the Central Processing Unit (CPU), to save battery life, or to make an animation of the user interface much smoother. So the question about performance is relevant nowadays, and software engineers should be careful with system resources.

Before we begin, let's review the topics we will be looking at:

• Reasons for performance issues
• Memory model
• Slow rendering