Let’s consider the following scenario on a device that has a Quad-Core CPU
I know this is a bit complex, so I have an example that explains this below, When the CPU Load metric as mentioned above is re-calculated using the Maximum operating point of each CPU Core we get normalized CPU Usage. For example in an iOS device with 4 cores, the CPU Load can go up to 400% (100% Load for each CPU core). So there is a need to normalize the CPU Load to the maximum operating frequency of the CPU.ĬPU Load can be obtained both for Android and iOS in a variety of ways. A CPU that’s 100% loaded at 500 Mhz will only be 50% loaded if the frequency is increased to 1GHz. As a result, a CPU that’s fully loaded at a lower frequency can still accept more jobs from the operating system if the frequency is increased.Ī key observation to make is the fact that CPU Load depends on the operating point of the CPU. Modern devices have multi-core CPUs that can operate at different frequencies depending on the computational need of the software using the CPU. CPU load measures the amount of work done by a CPU between two sampling intervals. Definitionsīefore we can discuss methods of measuring the CPU Usage it’s important to know what we mean by the definition CPU Load. Let’s look at how to measure CPU Usage in both Android and iOS devices. These three fundamental areas are the first stop when looking to identify performance issues. It could likely be that the game is bottlenecked by either the CPU/ GPU or memory bandwidth. When your game is not able to provide a good experience you are naturally curious about resource usage in your system. For games, frames per second is a good measure of this. The fundamental goal of any app or game is to provide a great experience to the user. If you have ever wanted to measure the CPU Usage of a mobile app or game and you are stuck, then read on to find out how this can be achieved.
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